Java Edition 1.18/Development versions

This is a list of Java Edition 1.18 development versions.

1.18 Experimental Snapshot 1

1.18 Experimental Snapshot 1 (known as 1_18_experimental-snapshot-1 in the launcher) is the first experimental snapshot for Java Edition 1.18, released on July 13, 2021, which introduces new terrain generation and enables features from the preview data pack.

Additions

World generation

Caves

• Completely overhauled.
• Now stretch down to Y=-59.
• The cavern now generates in 2 layers of different stone bases depending on the depth.
  • Cavern layer above Y=0 is made up of regular stone.
  • Stone transitions to deepslate from Y=0 to Y=-7.
  • Deepslate now completely replaces stone from Y=-8 to bedrock.
    • Certain types of ores and structures still generate in the deepslate layer, as well as tuff.
    • Dirt, diorite, granite and andesite do not generate in this layer.
• Contain aquifers, bodies of water with different heights, independent of sea level (Y=63).
  • Aquifers below Y=0 sometimes generate with lava instead of water.
• Improved old caves, adding more variation.
• New noise caves, coming in 3 forms: cheese, spaghetti, and noodle.
  • The original caves still exist with their generation slightly tweaked to better blend in with noise caves.
  • Cheese caves have large stone towers stretching from the bottom of the cave to the top.
    • Very large, often large enough to fly with elytra.
    • Abundant with springs, aquifers and ores.
  • Spaghetti caves are long, thin caves that have small aquifers and are more similar to original caves.
  • Noodle caves are thinner, squigglier and more claustrophobic variants of spaghetti caves.

Mountains

• Come in 5 sub-biomes:
  • Meadow
    • A flat but elevated biome that looks like a flowery and colder plains, with an aqua grass color and dark blue water color.
    • Generates in plateaus and the lowest layers of some mountains, usually near plains and other temperate biomes.
    • Contains grass, tall grass, dandelions, azure bluets, cornflowers, blue orchids, poppies, oxeye daisies and alliums.
    • Only rabbits and donkeys spawn in this biome.
  • Grove
    • Reminiscent of a snowy taiga with snow blocks instead of grass blocks.
    • Generates in the slopes of a snowy mountain when next to forested biomes.
    • Covered in snow, snow blocks, powder snow and is filled with spruce trees.
    • Rabbits, wolves, foxes, sheep, pigs, chickens and cows spawn in this biome.
  • Snowy Slopes
    • Generates in the slopes of a mountain when next to plains and snowy tundras.
    • Covered in snow layers, snow blocks, powder snow and ice.
    • Only rabbits and goats spawn in this biome.
  • Lofty Peaks
    • One of the biomes that generate in the mountain peaks.
    • Covered in snow, snow blocks and ice.
    • Only goats spawn in this biome.
  • Snowcapped Peaks
    • One of the biomes that generate in the mountain peaks.
    • Generates if the surrounding biomes are too cold for lofty peaks.
    • Covered in snow, snow blocks, ice, and packed ice.
    • Only goats spawn in this biome.

Ore Veins

• Long and rare ore formations.
• Copper ore veins mixed with granite and raw copper block generate above Y=0.
• Iron ore veins mixed with tuff and raw iron block generate below Y=0.

Technical

Debug screen

• Added two new lines: "Multinoise" and "Terrain".
  • Only appear if the dimension where the player is uses the multi-noise biome source type.
  • Multinoise lists the parameters used at the player's position in order to place a biome. C is continentalness, E is erosion, T is temperature, H is humidity and W is weirdness.
  • Terrain lists values related to terrain generation.​

Changes

Blocks

Sculk sensor

• Have been re-added to Creative inventory.

Snow block

• Plants can now be placed on snow blocks.

Items

Bundle

• Have been re-added to Creative inventory.
• Can once again be crafted.

Mobs

Axolotls

• Now only spawn in lush caves.

Goat

• Now only spawn in the new mountain biomes.

General

• Hostile mobs only spawn in areas where the light level is 0.
  • This change only affects block-light and not sky-light.

World generation

Overworld

• Now uses the multi-noise biome source type.

Lush caves and dripstone caves

• Now generate naturally underground and inside hills or mountains.
  • Azalea trees now generate above lush caves.

Deep warm ocean

• Now generates naturally.

Swamp

• Does not generate correctly. This is fixed in 1.18 experimental snapshot 2.

Sub-biomes

• Wooded hills, birch forest hills, tall birch hills, taiga hills, taiga mountains, gravelly mountains+, desert hills, desert lakes, savanna plateau, shattered savanna plateau, swamp hills, dark forest hills, ice spikes, snowy mountains, snowy taiga hills, snowy taiga mountains, modified jungle, jungle hills, bamboo jungle hills, jungle edge, modified jungle edge, giant tree taiga hills, giant spruce taiga hills, eroded badlands, badlands plateau, modified badlands plateau, modified wooded badlands plateau, and mushroom field shore biomes no longer generate naturally.
  • Ice spikes, eroded badlands and savanna plateau were added back in 1.18 experimental snapshot 2.
  • Jungle edge was added back in 1.18 experimental snapshot 5.

The new ore generation for 1.18 Experimental Snapshot 1.

Ore distribution

• Changed ore generation of all ores making them have a spread value like lapis lazuli ore. Some still retain a linear generation alongside a spread generation.
• Coal ore, emerald ore, and copper ore no longer generate below Y=0.
  • Copper ore generates between Y=0 and Y=96 and like all other ores, uses spread. It peaks at Y=48.
  • Emerald ore generates above Y=32 as a spread, peaking at Y=256 and decreasing in quantity as the altitude decreases.
  • Coal ore attempts to generate twice: once, evenly between an altitude of Y=136 and Y=256; and as a spread, peaking at an altitude of Y=96 and generating between an altitude of Y=0 and Y=192.
• Other ores also generate differently.
  • Iron ore attempts to generate three times: once as a spread peaking at an altitude of Y=256, generating above Y=128; another as a spread peaking at Y=16 and generating with a minimum height of Y=-24 and a maximum height of Y=57, and a smaller one spreading evenly between the altitudes of Y=-64 and Y=72.
  • Gold ore generates between the altitudes of Y=-64 and Y=32, peaking at Y=-16. The extra gold that generates in the badlands biome was left untouched.
  • Lapis lazuli ore attempts to generate twice: once, as a spread between the altitudes of Y=32 and Y=-32, peaking at an altitude of 0; and evenly between the altitudes of Y=64 and Y=-64, generating buried like ancient debris.
  • Redstone ore attempts to generate twice: once, evenly between an altitude of Y=15 and Y=-64; and as a spread, peaking at an altitude of -64 and generating below an altitude of Y=-32.
  • Diamond ore now generate as a spread, generating below Y=16 and peaking at altitudes near Y=-64.

General

• Terrain generation is now independent from biomes, with biomes adapting to whatever terrain they happen to generate throughout.
  • This allows for natural variation in the terrain of any individual biome, both in terms of shape and elevation.
    • For example, forests and deserts could form up on a hill without needing a special biome just for that purpose.
  • This additionally allows for smoother transitions between biomes.
• Terrain is now smoother and more extreme.

General

Height limit

• Has been increased to 384 blocks, expanding 64 blocks up and 64 blocks down, with 320 being the limit upward and -64 being the limit downward.

World types

• Removed the "Large Biomes" and "Amplified" world types.

1.18 experimental snapshot 2

1.18 experimental snapshot 2 (known as 1_18_experimental-snapshot-2 in the launcher) is the second experimental snapshot for Java Edition 1.18, released on July 20, 2021, which makes numerous changes to world generation and mob spawning functionality related to monster spawners.

Additions

A map of biome placement in the first snapshot.

A map of biome placement in this snaphot.

General

NBT format

• Spawners now have a new [NBT Compound / JSON Object] CustomeSpawnRules [sic] tag, which lets players override the spawn rules of the spawned mob.
  • In the tag, players can specify [Int] BlockLightLimit, which indicates the highest block-light the spawner spawns mobs at.

Changes

Mobs

General

• Zombie, skeleton, spider, and cave spider spawners now spawn mobs up to block-light level 11.

World generation

Beaches

• Beaches are generally wider.
  • In some places there is a chance where no beaches generate at all, to provide some variation.

Extreme hills

• Renamed mountains to extreme hills, and gravelly mountains to gravelly hills.

Mountains

• Sheep now spawn in meadows.
• Rabbits now spawn more frequently in meadows.
• Donkeys now spawn less frequently in meadows.
• Blue orchid no longer spawns in meadows.
• Meadows sometimes spawn a lone oak or birch, often with a bee nest.
• Hostile mobs now spawn in the new mountain biomes.
• Infested stone now generate in the new mountain biomes.

Ore distribution

• Emerald ores now generate in the new mountain biomes.

Ore veins

• Made ore veins slightly larger and more frequent.

Biomes

• Ice spikes, eroded badlands, and savanna plateau generate naturally.

Swamp

• Swamps now generate properly.

Lush caves

• Are now slightly smaller and slightly less common.

General

• Biome placement is a bit smoother and less noisy. Fewer microbiomes dotting the terrain. Biomes tend to be a bit larger and less fragmented.
• Underground biomes interfere less with surface biomes. They can still leak out of cave entrances sometimes.
• Increased the height of some of the peaks.
  • Now can rarely reach up to Y=260.
• Slightly increased the chance of finding large areas with flat terrain.
• Structures now mostly show up in the right biomes.
• Toned down the megacave entrances a little bit, and made them less likely to go all the way down to deepslate level.
• Made cheese caves a little bit smaller on average, and a bit less likely to intersect the surface.
• Reduced the chance of sand and gravel being placed in such a way that they immediately fall down on generation.
  • Some are now replaced with sandstone or stone.

General

Clouds

• Raised cloud level from 128 to 192.

1.18 experimental snapshot 3

1.18 experimental snapshot 3 is the third experimental snapshot for Java Edition 1.18, released on August 10, 2021, which makes numerous changes to world generation and fixes bugs from previous experimental snapshots.

Additions

World generation

Stony Peaks

• A new mountains biome that is a variant of lofty/snowcapped peaks that uses stone and strips of gravel, instead of snow and ice.
  • Is used to avoid temperature clashes.

Changes

Mobs

General

• Mob spawning is now consistent throughout all altitudes increasing spawn rates in higher altitudes and decreasing spawn rates in lower altitudes.
  • The spawning rates are similar to 1.17's spawning rate at y=64.

World generation

Aquifers

• Aquifers can go deeper and are more likely to connect with cave systems further down.
• Added more high-frequency variation to aquifers, to reduce the risk of massively huge areas with waterfilled caves everywhere.
  • Underground lakes and flooded regions are more likely to be spread out instead of concentrated in one region.

Badlands

• Tweaked badlands so they sometimes show up in flat areas next to plateaus, and made the red sand generate higher up (to account for the generally higher terrain).
• Eroded badlands no longer create floating pillars on top of the water surface.

Biomes

• Tweaked biome placement to reduce the chance of temperature clashes.
• Tweaked biome placement to allow for more noisiness and diversity.
  • This allows for the reintroduction of microbiomes.

Beaches

• Tweaked beaches a bit, to make them more inclined to show up on flat coastlines rather than hilly areas.
• Reduced the amount of stone shores.

Desert temples

• Desert temples spawn on the surface rather than at a fixed y-level.

Mountains

• Made peak biomes and meadows less likely to generate in flat low elevation areas.
• Snowy slopes and snowcapped peaks no longer place dirt under the snow.

Pillager outposts

• Now generate in all the new mountain biomes.

Swamps

• Swamps are less likely to overlap cold or dry biomes, and they no longer place hanging water.

Villages

• Now generate in meadows.

General

• Smoothed out the cliffs in shattered terrain a bit.
• Coastlines and river banks are less likely to be intersected by aquifers.
  • Local water levels are mostly used in terrain that doesn't border a river or ocean.
  • Cave openings and ravines that intersect an ocean or river mostly use sea level.
• Inland low-elevation areas are less likely to have flooded caves everywhere.
• Grass no longer generates underwater.
• Reduced the chance of incorrect surface placement.
• Reduced the chance of river biome generating in dry mountain gorges.

Fixes

• Fixed goats not spawning in the new mountain biomes.
• Fixed an issue where players in multiplayer can face far more or far fewer enemies than intended, particularly when other players are flying.
• MC-30560 was fixed by this version, although it was not marked as such due to the bug tracker not handling experimental snapshots.

1.18 experimental snapshot 4

1.18 experimental snapshot 4 is the fourth experimental snapshot for Java Edition 1.18, released on August 17, 2021, which makes numerous changes and tweaks to world generation.

Changes

A dry river.

A saddle valley.

World generation

Badlands

• Now is larger and less likely to show up as microbiome splotches.
• Terracotta bands now go higher.
• Wooded badlands grass and trees now start higher.

Biomes

• Tweaked biome placement in general to reduce the risk of harsh collisions.
• Now biome placement is a bit smoother and less noisy. This should result in fewer microbiomes.
• Removed surface freezing for hot biomes, and raised the altitude at which snow layers are placed.

Desert

• Now is larger and less likely to show up as microbiome splotches.
• Desert pyramids now tend to be partially buried and no longer generate on water.

Extreme hills

• The terrain is now more extreme. Fiddled with the placement of shattered terrain and extreme hills in general to make it fit in with the terrain better.

Jungle pyramids

• No longer generate on water.

Ore distribution

• Reduced the number of diorite/andesite/granite blobs on the surface.
• Copper ore blobs now are bigger in dripstone caves.
• More iron is generated.

Rivers

• Reduced the likelihood of rivers being cut off and turning into steep dry river gorges in mountainous terrain.
• Rivers tend to either carve a fjord through the mountain range, or raise the terrain to form a saddle valley between the peaks.

Snowy slopes

• Now have fewer dirt blocks.

Stone shores

• Sometimes generate layers (strips) of gravel, diorite, andesite, or granite.

Stony peaks

• Sometimes generate layers (strips) of calcite, andesite, granite, or gravel.

Swamps

• Tweaked swamp placement a bit.
• Are less likely to extend far out from the coastline.
• Rivers in swamps now tend to be shallower.

1.18 experimental snapshot 5

1.18 experimental snapshot 5 is the fifth experimental snapshot for Java Edition 1.18, released on August 25, 2021, which makes numerous changes and tweaks to world generation.

Changes

Mobs

General

• Removed the height-based spawning change that was made in snapshot 3.

World generation

Badlands

• Slightly decreased the size of Badlands.

Caves

• Carvers can now replace red sand and calcite during world generation.

Dripstone caves

• In world generation, grass is replaced with stone (if generated near grass).

Jungle edge

• Now generates naturally.

Lush caves

• Now generate with springs.
• Were unintentionally made smaller and more fragmented.

Mountains

• Mountain tops are now more jagged and pointy.
• Mountain areas and peak biomes now are slightly larger on average.
• Raised the average mountain height

Mushroom fields

• Tweaked mushroom fields biome, now it matches the shape of the islands better.

Rivers

• Tweaked the depth of rivers and the steepness of river banks.
• They are less likely to be super deep or get cut off in flat areas.
• Rivers integrate better with swamps, the river tends to get shallow and merge with the swamp instead of carving through.

Swamps

• Moved swamps slightly more inland.
• Swamp trees can grow in slightly deeper water than before, populating deeper marshes.

General

• Small lakes features are no longer placed in dry and hot biomes (desert, savanna, badlands).
• Reduced the number of lake feature placements in other biomes.
• Water springs can generate in more types of blocks such as dirt and snow, increasing the likelihood of small mountain streams and waterfalls.
• Reduced the amount of shattered terrain and shattered savanna biome, replacing some of that space with flatter beaches instead.

Fixes

• Fossils with diamonds no longer generate above deepslate level.
• Fixed an unintentional change from snapshot 4 that made mountains lower and smoother.
  • Small hills and overhangs (3D noise) generate more often in flat areas, like in the third experimental snapshot.
• Fixed an indent in the code.

1.18 experimental snapshot 6

1.18 experimental snapshot 6 is the sixth experimental snapshot for Java Edition 1.18, released on September 1, 2021, which introduces changes to terrain generation and tweaks biome placement.

Changes

Mobs

Horses, mules, and donkeys

• Now follow players holding golden carrots, golden apples, and enchanted golden apples.

Llamas

• Now follow players holding hay bales.

World generation

Aquifers

• Aquifers under oceans or rivers are more likely to link to the underground.
  • More likely to find cave openings on ocean floors that actually lead somewhere instead of being cut off.
  • Caves at Y=0 to Y=40 which under oceans are more likely to be flooded.

Giant tree taiga and giant spruce taiga

• No longer considered as cold climates.
  • Decreased the chance of mixed in with snowy biomes, caused a small reshuffle of other biomes to maintain the overall balance.

Grove and snowy slopes

• Decreased the chance of generating on mountain peaks.
• Altered generation so that they tend to spawn farther away from contrasting temperatures.

Springs

• Slightly reduced the number of water springs.

Swamps

• Now generate in dry areas.
• Decreased the chance of being fragmented.

Canyons

• Underwater variants readded.
  • No longer use a specific carver for underwater canyons. Instead, they generate on ocean floors, using normal noise caves and carvers.
  • Now have more natural variation.

General

• Decreased the chance of generating cold microbiomes.
• Slightly increased the number of underwater magma blocks, to increase the chance of finding air when diving in aquifers.
• Cave carvers can now carve through sand and gravel on ocean floors.

Fixes

• Fixed decreased generation rate of lush caves.

1.18 experimental snapshot 7

1.18 experimental snapshot 7 is the seventh and final experimental snapshot for Java Edition 1.18, released on September 8, 2021, which introduces changes to terrain generation and tweaks to elytra due to various server chunk loading issues. This is the final experimental snapshot released in 2021.

Changes

Items

Elytra

• No longer take durability damage when gliding, only when boosting with firework rockets.
• Decreased the firework rocket boost on an elytra from 30 blocks per second to 26 blocks per second.
• Now break when the item reaches 0 durability.

World generation

Caves

• Noodle caves are no longer capped at Y=130, allowing cave openings and cracks in mountain peaks.

General

• Slightly smoothened the terrain by lowering the noise.

21w37a

21w37a is the first snapshot for Java Edition 1.18, released on September 15, 2021, which adds the contents of the previous seven experimental snapshots and brings more parity with Bedrock Edition.

Additions

General

Commands

• /jfr
  • When enabled, begins profiling with Java FlightRecorder, as well as the following custom events:
    • minecraft.ServerTickTime: Sampling event exposing average server tick times in intervals of a second
    • minecraft.ChunkGeneration: Time taken to generate individual chunk stages
    • minecraft.PacketRead / minecraft.PacketSent: Network traffic
    • minecraft.WorldLoadFinishedEvent: Initial world loading duration
  • The profiling can be stopped in-game by using /jfr stop.

Font

• Added illageralt, the rune-like font from Minecraft Dungeons.
  • Currently only usable via commands

Loot tables

• Added the type field, which is mandatory.
  • Written into BlockEntityTag.id to ensure that the tag can be migrated correctly between versions.

Options

• Can now disable lightning flashes, which prevents lightning from making the sky flash. Lightning bolts themselves still appear.
• The device the game outputs audio to can now be chosen in-game.
• Added "Priority updates" to video settings.
  • Determines as to which chunk sections are updated synchronously in a single frame.
  • Three options:
    • nearby, which corresponds to how chunk sections were updated before 21w37a, by player and none, which reduce stuttering when placing or removing blocks.
    • However, the latter two options may cause rare visual delays in world updates. These options also appear to be improperly capitalized.

Subtitles

• Added subtitles for various bundle sounds.

Changes

Blocks

Enchanting table

• Now emits a light level of 7.

Cave vines, kelp, twisting vines and weeping vines

• Now stop growing if shears are used on the tip.
  • This action changes the age block state of the tip to 25.

Snow block

• Reverted change allowing plants to be placed on snow blocks.
  • This reversion results in the lack of vegetation in the grove biome.

Items

Bundle

• Has been removed from the creative inventory once again.
• Can once again no longer be crafted.
• Only accessible through commands once again.

Crossbow

• Durability has been increased to 465.

Elytra

• Reverted changes from experimental snapshot 7.

Mobs

Axolotls

• Now have their own mob cap.

Vindicators, pillagers, and evokers

• Don't attack baby villagers anymore.

Goats

• Now only spawn in snowy slopes, stony peaks, lofty peaks, and snow capped peaks biomes.

Feedable mobs

• All feedable mobs (except sheep) named "Dinnerbone" now look at the player correctly.

General

• Reverted changes of spawners from experimental snapshot 2.

World generation

Stone shores

• Changes of diorite, andesite, or granite generated as strips in experimental snapshot 4 is reverted.

Stony peaks

• Changes of andesite, granite and gravel generated as strips in experimental 4 is reverted.

General

Data packs

• Version number has been increased to 8.

Options

• Sneak, sprint, and auto-jump options have been moved to the "Controls" menu.
• Render distance now causes chunks to load in a cylinder shape around the player instead of a square.

Scoreboards

• Removed length limits for scoreboards, score holders and team names.

Splashes

• The splash "[this splash text has been delayed until part 2]" has been changed to "[this splash text is now available]".

Tags

• Renamed the lava_pool_stone_replaceables block tag to lava_pool_stone_cannot_replace.

Other

• Worlds last opened before Java Edition 1.2 can no longer be opened.
  • These worlds must be opened in a version prior to 21w37a (preferably between Java Edition 1.2 and Java Edition 1.6.4).
  • An error is shown when attempting to open these worlds.

Fixes

69 issues fixed

From released versions before Java Edition 1.18

• MC-7200 – Cave/tunnel generation may cut tunnels a bit too soon.
• MC-29274 – Withers will not pursue players in survival mode unless attacked.
• MC-30560 – River through eroded badlands biome generates floating rock formations at water surface.
• MC-54545 – Client render distance doesn't adjust to server render distance if they are different, causing faulty chunk loading.
• MC-65628 – Desert pyramids generate underground when using amplified or custom terrain.
• MC-72831 – Water lakes can generate in deserts.
• MC-85975 – Slimes don't spawn in the swamp hills biome.
• MC-101917 – Andesite, diorite and granite won't generate above a height of about 80.
• MC-123277 – Too long scoreboard objectives and team names are not detected when commands are parsed.
• MC-125033 – Old cave and ravine generation gets cut off unnaturally on chunk borders near water.
• MC-126133 – Undercover ravines sometimes generate cut off at chunk borders.
• MC-129266 – Jagged ocean transitions and slower biome generation.
• MC-132175 – Beaches generate along swamp hills when bordering an ocean.
• MC-132429 – Sand beaches generate when bordering gravelly mountains biomes.
• MC-134407 – Ocean ravines spawning underground with a stone roof on top.
• MC-138801 – The interactions between a biome and another biome and its variants are inconsistent.
• MC-140151 – Modified jungle edge biomes only generate when a jungle borders a swamp hills biome.
• MC-140690 – Giant spruce taiga hills have no difference with giant spruce taiga.
• MC-159025 – Drowned do not spawn in warm ocean biomes.
• MC-160710 – Chat messages written while sleeping are deleted after waking up.
• MC-166238 – Trees can generate on mycelium.
• MC-166423 – Splash water bottles don't damage endermen.
• MC-167277 – Swamp hills don't naturally generate seagrass.
• MC-167800 – Rabbits do not spawn on snow block, podzol and coarse dirt.
• MC-175929 – Ice spikes get cut off below height limit on AMPLIFIED worlds.
• MC-182362 – Score callbacks with a too long name break callback chain.
• MC-186042 – Plains biome is always generated when a swamp borders a desert, snowy tundra or snowy taiga.
• MC-188096 – Gravelly mountains+ is no different than gravelly mountains.
• MC-190363 – Some biomes generate as "Single biome" worlds in "Floating islands" world type.
• MC-199298 – Strongholds don't generate in bamboo jungles.
• MC-200230 – Anomalous stripes/grid ice generation in frozen ocean biome.
• MC-202376 – Rabbits, instead of spawning on snow blocks, spawn on snow layers.
• MC-208352 – Dark forest hills don't generate small patches of plains or sunflower plains, but dark forest does.
• MC-208353 – Several hills biomes do not generate sporadically replacing patches of their regular biome counterparts.
• MC-208601 – Axolotls do not avoid danger when pathfinding.
• MC-212113 – Glow lichen can spawn underwater whilst not in a cave.
• MC-213779 – FPS drops when looking up in a tall world (4064 blocks).
• MC-214335 – Flower forest is much steeper than regular forest.
• MC-214783 – Oceans generate with stone floors.
• MC-214797 – Pointed dripstone can generate floating at transitions between local water levels.
• MC-214799 – Aquifers sometimes create air pockets.
• MC-214864 – Hard edges when new caves generate near surface.
• MC-215062 – Weird aquifer barrier generator and water in incorrect states.
• MC-215296 – Mineshafts often don't generate in floating island worlds.
• MC-215876 – Dirt can generate below Y=0 from mineshafts.
• MC-216362 – Jukeboxes that have been placed don't stack with jukeboxes that have not been placed.
• MC-216448 – River generates over a ravine.
• MC-216784 – Ruined portals don't generate below Y=0.
• MC-216952 – Some chunks interrupting with cave systems filled with blocks.
• MC-216967 – Kelp and seagrass can generate in aquifers.
• MC-217136 – Random noise pillars generating mid air.
• MC-217465 – Unnatural shape looking like a chunk border but appears to be completely unrelated to chunk borders.
• MC-217509 – Inefficient generation of aquifers, noise caves and ore veins.
• MC-219774 – Magma blocks spawn everywhere underwater in 21w10a.
• MC-219946 – Weird flat sections of terrain.
• MC-221679 – End fog loses its gradient when under Y=0.
• MC-221777 – Horses, donkeys, mules, llamas, and trader llamas do not follow players holding food.
• MC-221815 – Flat roofs in underwater caves.
• MC-221917 – Dripstone, pointed dripstone, and cave magma generate in oceans.
• MC-222051 – Iron ore generation was not increased in 21w13a.
• MC-222379 – Magma can spawn under air in underwater caves.
• MC-223044 – Floating water can generate in ravines.
• MC-223051 – Dripstone can generate in surface lakes.
• MC-223148 – Extended height message goes behind the scrolling bar.
• MC-225781 – The noise cave lava level and the cave carver lava level generate 1 block apart.
• MC-227244 – Ore blocks from ore veins float in underwater magma ravines.
• MC-230343 – Parity issue: Enchanting tables do not emit a light level of 7.
• MC-231863 – Game crashes when trying to access the Realms settings.
• MC-233050 – #lava_pool_stone_replaceables tag name is misleading.

21w38a

21w38a is the second snapshot for Java Edition 1.18, released on September 23, 2021, which make more performance-related tweaks, reimplements telemetry, and fixes bugs, mostly relating to terrain changes that were accidentally removed in the previous snapshot.

Any worlds from previous versions cannot be opened in this version.

Additions

General

Languages

• Added Lombard.
• Added Toki Pona.

Options

• Added "Simulation Distance" video setting, a new slider.
  • Entities aren't updated outside of simulation distance.
  • Allows higher render distance with less CPU load.

Subtitles

• Added a new subtitle for the crop sound of shears.

server.properties

• Added simulation-distance.

Telemetry

• Readded, previously a part of game known as "snooper" until 18w20c.
  • Only implemented in world load event now.
  • Sent data when loading singleplayer world or connecting to multiplayer server.
  • Contains following information:
    • Launcher identifier
    • User identitifer (XUID)
    • Client session ID (changes on restart)
    • World session ID (changes per world load, to be reused for later events)
    • Game version
    • Operating system name and version
    • Java runtime version
    • If client or server is modded (same information as on crash logs)
    • Server type (single player, Realms or other)
    • Game mode
  • Cannot be disabled.

Changes

World generation

Ore distribution

• Copper ore now generates up to Y=95, and its amount was increased.
• Lapis lazuli ore now generates in blobs, like other ores, instead of spread out.

General

Performance

• Now, various background tasks including world generation are executed on a background thread pool.
  • The size of the thread pool equals Amount of available CPU threads - 1.
    • Maximum amount of threads is 255, instead of 7. This limit can be overridden by Java system property max.bg.threads.

Sprinting

• No longer reduced to walking when touching the wall at low angles.

Fixes

21 issues fixed

From released versions before Java Edition 1.18

• MC-44055 – Game fails to switch the audio output from one device to another from the title screen after the game has started.
• MC-128762 – Strongholds do not generate in ocean buffet worlds.
• MC-136288 – Strongholds don't generate in swamp biomes.
• MC-158410 – Strongholds don't generate in beach surface and snowy beaches buffet worlds.
• MC-183184 – Sprinting stops as soon as you touch another block.
• MC-202036 – Adding a biome to a datapack shifts biome IDs in existing chunks.

From the previous development version

• MC-236611 – No sound for using shears on weeping, twisting, cave vines or kelp.
• MC-236618 – Strongholds don't generate in 21w37a.
• MC-236621 – Liquids sometimes do not propagate.
• MC-236633 – Random light level of 0 in sky.
• MC-236656 – Crash when changing render distance: java.lang.ArrayIndexOutOfBoundsException: Index 28084 out of bounds for length 26136.
• MC-236665 – Memory leak in 21w37a.
• MC-236682 – Large and continuous lag spikes sometimes occur when loading or reloading into a world in 21w37a.
• MC-236698 – Big spruce trees don't generate in groves.
• MC-236711 – Starting and stopping JFR profiling multiple times within the same minute overwrites previous JFR results saved during that minute.
• MC-236718 – Dripstone caves generate above the ground.
• MC-236753 – Caves and lakes generating too much in desert surface.
• MC-236795 – Cannot start with alternate JVM due to JFR requirement.
• MC-236873 – Problems with JFR event metadata.
• MC-236967 – Too many aquifers on biome surfaces at Y=63 and below.
• MC-237109 – Aquifers often generate with harsh straight borders.

21w39a

21w39a is the third snapshot for Java Edition 1.18, released on September 29, 2021, which adds new advancements and fixes bugs.

Starting from this snapshot, players can open old worlds again. This does not only mean it is the first version which makes it possible to convert old worlds with lower limit Y=0 to the new Y=-64, but it means also that high caution is needed and backups are recommended when converting important old worlds, because the old chunks do yet not generate anything under their bedrock level: from -64 to -1 it is just void, only the new chunks get the new deep generation.

Additions

Gameplay

Advancements

• Added four new advancements:
  • Caves & Cliffs
    • Fall from the top to the bottom of the Overworld
  • Feels like home
    • Ride a strider on lava for 50 blocks in the Overworld
  • Star Trader
    • Trade with a villager at the build height limit
  • Sound of Music
    • Play music with a jukebox in a meadow biome
• Added new advancement triggers.
  • fall_from_height
    • Triggered when a player lands after falling.
  • ride_entity_in_lava
    • Triggered for every tick when player rides in lava.

General

Loot tables

• Added new loot table function set_potion, to set Potion tag on any item.
  • Has following parameters:
    • id: Potion ID

Changes

Mobs

Drowned

• Now can spawn in aquifers inside dripstone caves.

Zombie

• No longer spawns in dripstone caves.

World generation

Lofty peaks, snowcapped peaks and stony peaks

• Its small mountains are more jagged now.

Meadow

• Trees in meadows now always contain a bee nest.

Gameplay

Advancements

• "Light as a Rabbit" now has "Sweet Dreams" as its parent instead of "Adventure".

General

Buried treasure

• Chests can now contain Water Breathing potions.

Chunk format

• Paths for the block and biome data have changed:
  • Level.Sections[].BlockStates is now Level.Sections[].block_states.data.
  • Level.Sections[].Palette is now Level.Sections[].block_states.palette.
  • Chunk’s Level.Biomes are now paletted and live in a similar container structure in Level.Sections[].biomes.palette and Level.Sections[].biomes.data.
• Chunk’s Level.CarvingMasks[] is now long[] instead of byte[].

Effects

• Redesigned how effects look in the inventory screen.
  • Can display while recipe book is showing.
  • The list of effects are now shown to the right of the player's inventory, instead of the left side.
  • When the inventory effects list is visible, it is hidden from the game view to reduce screen clutter.
  • There are now two modes of seeing the effect list: compact and classic.
    • Classic is the pre-existing list of effects, one after another.
    • Compact is a single icon for each effect, suitable for small screen estate.
    • The game automatically switches between the two looks to suit the available screen estate.

Options

• Changed default brightness to 50.

Resource packs

• Resource pack version number is now 8, as the following has been changed:
  • inventory.png now contains an extra sprite for a thin-layout version of the effect list in the inventory.

Server jar

• server.jar now bundles individual libraries instead of merging all the files into single archive.
  • This change is meant to solve certain problems related to Java modules.
• On startup, server.jar unpacks libraries into a directory configured by bundlerRepoDir (default: working directory).
  • To run different main class than server, use bundlerMainClass property.

Fixes

14 issues fixed

From released versions before Java Edition 1.18

• MC-116359 – Status effects aren't displayed in inventory when recipe book is open.
• MC-129485 – Certain biome specific plant distribution is completely based on chunks, causing patchy biome generation.
• MC-145376 – Bamboo could generate underground when generating in non-bamboo jungles.
• MC-149822 – Bottom border on status effect displays in the inventory is missing.
• MC-193348 – Status effect bars shift the player's inventory in creative mode.
• MC-196723 – Potion effects obtained in creative mode while in inventory do not show up until reopening inventory.
• MC-214894 – Bamboo generates in caves under jungles.
• MC-214959 – Sugar cane generated in cave.
• MC-218167 – Chatting causes lag to occur.

From the Java Edition 1.18 development versions

• MC-236755 – "Feature Placement" crash: java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0.
• MC-236903 – Naturally generated cave vines have an age between 17-25.

From the previous development version

• MC-237464 – Packet sent event is recorded as packet received event.
• MC-237505 – Certain Biome Builder debug values do not change.

Other

• Removed generic snapshot tooltips from incompatible worlds (except for worlds created in experimental snapshots).

21w40a

21w40a is the fourth snapshot for Java Edition 1.18, released on October 7, 2021, that merges and renames some biomes, tweaks world generation, mob spawning, and fixes bugs.

Changes

Blocks

Copper ore

• Now drop 2-5 raw copper when mining instead of 2-3.

Stonecutter

• Block of copper can be converted to 4 cut copper using stonecutter.

Mobs

Axolotls

• Now only spawn in water above clay blocks in lush caves.

Cod, salmon, pufferfish, tropical fish, squid, and dolphins

• Now only spawn in water from Y=50 to Y=64.
• Additionally, tropical fishes now also spawn in lush caves at any height.

Glow squids

• Now only spawn in water blocks under Y=30.

Goats

• No longer spawn in stony peaks.

Zombies

• Now also spawn in dripstone caves again.

World generation

Biomes

• The unused height variation sub-biomes have been removed from the code and merged with their default biome variants, as following:

• Some biomes have been renamed:

Old name	[show]New name
Giant Spruce Taiga	Old Growth Spruce Taiga
Giant Tree Taiga	Old Growth Pine Taiga
Gravelly Mountains	Windswept Gravelly Hills
Jungle Edge	Sparse Jungle
Lofty Peaks	Jagged Peaks
Mountains	Windswept Hills
Shattered Savanna	Windswept Savanna
Snowcapped Peaks	Frozen Peaks
Snowy Tundra	Snowy Plains
Stone Shore	Stony Shore
Tall Birch Forest	Old Growth Birch Forest
Wooded Badlands Plateau	Wooded Badlands
Wooded Mountains	Windswept Forest

• Non-cave biomes (e.g. savannas) no longer change with height.
• Tweaked the relative size of some biomes, to match 1.17 a bit closer.
• Increased the average size of most biomes.

Ore distribution changes.

Ore distribution

• Copper ore now generates between Y=-16 and Y=112, generating the most at Y=48, and increased the number of ore blobs.
• Added more unexposed diamonds.
• Decreased minimum generation height of emerald ore from Y=32 to Y=-16, and increased the number of blobs.
  • This allows deepslate emerald ore to generate again.
• Extra gold generates below Y=-48.
• Decreased minimum generation height of the upper range of iron ore from Y=112 to Y=80, and increased the number of blobs.

Monster rooms

• Increased the amount of monster rooms, especially below Y=0.

Gravel

• Now generates below Y=0, and increased the number of blobs.

Lakes

• Water lakes were removed, because aquifers could provide local water levels.

Magma blocks

• Slightly increased the frequency of underwater magma.

Villages

• Now slightly more spread out.

General

• Bedrock layers generate dependent on the world seed now.

Gameplay

Advancements

• Due to the removal or merging of sub-biomes, the number of biomes required to visit for the "Adventuring Time" advancement has been reduced from 42 to 31, with the following biomes now being required:

General

AI

• Optimized AI for axolotls, goats, hoglins, zoglins, piglins, piglin brutes and villagers.

Fixes

47 issues fixed

From released versions before Java Edition 1.18

• MC-128770 – Woodland mansions still generate in dark forest hills.
• MC-132306 – Snowy grass without snow near lakes in snowy biome.
• MC-133582 – Dolphins try to catch up with boat on land.
• MC-137140 – Llamas cannot spawn in shattered savanna plateau.
• MC-137956 – Lakes still generate in superflat preset "Overworld" after removing its tag.
• MC-138734 – Spawn point for seed 0, world type Buffet with badlands plateau biome is under surface, ⇒ player dies.
• MC-138782 – Stranded dolphin tries to catch the boat on the water and stops beating.
• MC-138939 – Fish and dolphins spawn in water above sea level.
• MC-152966 – Increase in villages generating in versions after 1.10.
• MC-169523 – As of 18w06a, the sand, clay and gravel blocks no longer generate around small lakes.
• MC-177016 – Some lakes in frozen biomes generate unfrozen.
• MC-190724 – Spawning in solid blocks in single biome "Badlands Plateau" world.
• MC-197688 – Mountain edge never generates.
• MC-200640 – Despite being a coastal biome, mushroom field shores don't have a warm/unique water color.
• MC-200803 – Gravelly mountains+/modified gravelly mountains placed incorrectly in the biome selection.
• MC-217906 – Large amounts of axolotls cause performance issues.
• MC-224494 – Regular dirt can generate naturally on the surface near pools.
• MC-225030 – Dungeons are extremely rare compared to in the past.
• MC-225506 – Grass blocks can generate naturally in underground pools.
• MC-225842 – Flowers can generate on large plants near lakes.
• MC-225858 – Seeds and flowers appear in ponds.
• MC-226000 – Pointed dripstone items in underground pools.
• MC-226437 – Water lakes generating in snowy tundra's can sometimes contain dark spots.
• MC-226682 – World can fail to render/load causing visual issues.
• MC-227064 – Floating grass can still generate above water lakes.
• MC-229365 – Large amounts of goats cause performance issues.
• MC-231400 – Modified badlands plateau and mountain edge don't generate and gives out invalid biome data in single biome worlds.
• MC-233661 – In some cases, sand blocks generating over lakes do not cause light updates, resulting in large dark spots.
• MC-238006 – Emerald ore and infested blocks do not generate in snowy mountain biomes.

From the Java Edition 1.18 development versions

• MC-236609 – New mountain biomes use translations strings in biome selection.
• MC-236614 – Adventuring Time advancement still accepts non generating biomes.
• MC-236617 – Mountains and gravelly mountains use their 1.17.1 biome ID name.
• MC-236632 – Banners without patterns do not render properly.
• MC-236663 – Command blocks do not display command in their UI.
• MC-236736 – No relief on treasure map or explorer maps.
• MC-236894 – Foliage from specific biomes can generate in biomes they aren't meant for.
• MC-236896 – Strange mini broken aquifer walls generating commonly on the surface.
• MC-237490 – The bottom parts of aquifers aren't always surrounded by blocks which can occasionally cause them to spill into caves in ways that appear bizarre.
• MC-237586 – Entities that die outside of simulation distance remain frozen in the death animation.
• MC-237666 – Unused biomes still present in game files.

From the previous development version

• MC-237925 – Opening world from 1.12.2 (or older) in latest snapshot regenerates random chunks.
• MC-237933 – Sweet berries generate much too often.
• MC-237950 – Cave vines can generate without tip because prioritize_tip option is negated.
• MC-237951 – Cave vines can generate into water.
• MC-237962 – Entities bob their head up and down when targeting towards the player.
• MC-238104 – Blue orchid generation has decreased.
• MC-238265 – version.json contains internal revision ID instead of game version ID.

21w41a

21w41a is the fifth snapshot for Java Edition 1.18, released on October 13, 2021, that introduces changes to some textures, world generation, and fixes bugs.

Changes

Blocks

Cave vines

• Changed cave vines plant texture from to .

Enchanting table

• Changed the texture of the lapis lazuli icon in the GUI from to .

Redstone comparator

• Changed the base texture of lit comparators from to .

Items

Campfire and soul campfire

• Changed the item textures from to .

Wooden doors and iron doors

• Changed the item textures of all doors except crimson and warped from to .

Item frames and glow item frames

• Changed the item textures from to .

Signs

• Changed the item textures from to .

Mobs

Wither

• Tweaked the wither skull's texture to use the new wither face from the Texture Update.

Zombie villager

• Tweaked the armorer zombie villager's and weaponsmith zombie villager's textures to remove stray villager pixels.

World generation

Amethyst geodes

• Now only generate up to Y=30.
• Rarity has been increased to match 1.17 levels.

Badlands

• Red sandstone now generates naturally once again.

Mineshafts

• Now generate higher up in badlands.

Mountains

• The snowy slopes and jagged peaks surfaces have been fixed to work like they did in the experimental snapshots, where steep sides of the peaks that facing the east or north are exposed stone.

General

• New random number generator is used for Overworld generation.

General

Chunk render pipeline

• Changed the prioritization order.

Title screen

• Main menu background is changed to reflect Caves & Cliffs: Part II.

Server

• Server classes are now signed.

Sprinting

• Slightly increased the angle in which sprinting against a block would not stop the player from doing so.

Fixes

21 issues fixed

From released versions before Java Edition 1.18

• MC-118134 – Item frame texture as an item uses texture of oak planks.
• MC-137950 – Signs textures do not correspond to the actual texture of their handle.
• MC-142385 – Campfire texture has one pixel extending into hotbar outline.
• MC-148182 – The zombie villager "profession" texture uses villager-skin-colored pixels.
• MC-152506 – Wither skull projectile has faces with old texture.
• MC-160256 – Texture of door items does not match the blocks.
• MC-166508 – Glitchy chunk rendering since 1.15 pre-release 2.
• MC-173339 – Comparators lit base texture is incorrect.
• MC-203155 – Enchanting table GUI uses old lapis texture.
• MC-225949 – Parity issue: Different Bedrock and Java sign items textures.
• MC-226313 – Lava can generate floating in caves.
• MC-227398 – Misplaced pixel on cave vines texture.
• MC-230302 – Glow item frame item texture is missing two pixels.

From the Java Edition 1.18 development versions

• MC-236620 – Nether biomes don't generate correctly.
• MC-236650 – Minecraft in 1.18 has 2⁴⁸ seeds instead of 2⁶⁴ seeds.
• MC-236767 – Axolotls are extremely rare in lush caves.
• MC-237330 – Worlds created with seed "REDApRES" (0) crash when trying to load new 1.18 mountain biomes: java.lang.NullPointerException: Cannot invoke "dfw.a(double, double, double)" because "this.a" is null.
• MC-237457 – Snowy slopes biome no longer generates stone cliff feature from experimental snapshots.
• MC-238003 – Stone in jagged peaks is always covered by snow blocks.

From the previous development version

• MC-238561 – Axolotls aren't able to spawn at all in lush caves.
• MC-238661 – InhabitedTime value/local difficulty doesn't increase.

21w42a

21w42a is the sixth snapshot for Java Edition 1.18, released on October 20, 2021, which introduces new music, changes to world generation, and many fixes related to spawning.

Additions

Items

Music disc

• Added the "otherside" music disc, composed by Lena Raine.
  • Can be found on rare occasions in stronghold corridor chests, or much more rarely in monster room chests.

General

Music

• Added new music to the Overworld (when playing in survival mode), distributed to the new biomes, and to the main menu.
  • By Lena Raine: "Stand Tall", "Left to Bloom", "One More Day", "Wending" and "Infinite Amethyst":
    • "Stand Tall" plays in the snowy slopes, jagged peaks, frozen peaks and stony peaks biomes, as well as the menu screen.
    • "Left to Bloom" plays in the meadow and lush caves biomes, as well as the menu screen.
    • "One More Day" plays in the meadow, snowy slopes and lush caves biomes, as well as the menu screen.
    • "Wending" plays in the grove, jagged peaks, stony peaks and dripstone caves biomes, as well as the menu screen.
    • "Infinite Amethyst" plays in the grove and dripstone caves biomes, as well as the menu screen.
  • By Kumi Tanioka (谷岡 久美): "Floating Dream", "Comforting Memories" and "An Ordinary Day":
    • "Floating Dream" plays in the jagged peaks and lush caves biomes.
    • "Comforting Memories" plays in the grove biome.
    • "An Ordinary Day" plays in the snowy slopes, dripstone caves and lush caves biomes.

Options

• Added "Autosave Indicator" to video settings, for singleplayer worlds, which allows to toggle the indicator on / off.
  • The indicator appears in the bottom right of the screen whenever the game is saving the world file.
  • Defaults to on.

Particles

• Added block_marker, to replace light and barrier.
  • Renders with texture declared in particle slot for model assigned to configured block state.
  • Summoned with same syntax as block particle (i.e. block_marker wheat[age=2]).

Changes

World generation

Ore distribution

• Increased top height limit of badlands gold generation from Y=79 to Y=256, and increased the number of blobs.

Springs

• Lava springs can now generate amid calcite, dirt, snow, powder snow and packed ice.
  • These changes allow lava springs to generate in mountains and snowy terrain.
• Water springs don't generate higher than Y=192, and are slightly less common.

General

World spawn

• Reworked selection algorithm.
  • Now is selected according to the same climate parameters that control biome placement and world generation: players should no longer spawn in the ocean or some other inconvenient locations like certain mountain biomes.

Fixes

15 issues fixed

From released versions before Java Edition 1.18

• MC-73300 – "Saving Level..." text not appearing in pause menu.
• MC-80824 – Spawning in some biomes causes "Unable to find spawn biome" warning.
• MC-129912 – Player no longer spawned at highest level at world spawn.
• MC-131686 – Spawn in ground with Buffet generation when creating a new world.
• MC-132347 – Spawning inside icebergs.
• MC-133466 – Certain world configurations force the player to spawn at X=8 Z=8.
• MC-185033 – Underground spawn in single biome world type.
• MC-185034 – Always respawning on the same block with no spawnpoint set.
• MC-198232 – Music plays less frequently as it normally did.
• MC-202166 – "Times Crafted" statistics column doesn't always display data correctly.
• MC-214288 – Player does not spawn on the surface of the world when min_y is greater than 0.
• MC-221641 – Caves can make ravines generate without water.
• MC-233771 – Parity issue: Light blocks do not display their light level when shown via a held light block item.

From the Java Edition 1.18 development versions

• MC-236837 – The player can occasionally spawn underground when loading into a new world.
• MC-238582 – Beaches generate between desert and ocean.

21w43a

21w43a is the seventh snapshot for Java Edition 1.18, released on October 27, 2021, which adds the old world upgrading and fixes bugs.

Additions

Biome blending in action.

World generation

Upgrading of old worlds

• Terrain from new chunks now blends with existing terrain from old chunks, preventing glitched borders from occurring.
• The old bedrock layer between Y=0 and Y=4 in old chunks gets replaced with deepslate.
• If there is bedrock at Y=0, lower places in old chunks are filled with deepslate.
  • Caves do not generate below Y=0 in old chunks but lava lakes and geodes may generate.
• A new bedrock layer is placed at Y=-64.
• Worlds upgraded in this snapshot have these changes permanently applied.

General

Tags

• Added block tag big_dripleaf_placeable.
  • Contains farmland and the #dirt and #small dripleaf placeable block tags.
  • Big dripleaf can be placed on blocks in this tag.

Changes

Blocks

Big dripleaf

• Restricted big dripleaf placement to clay, coarse dirt, dirt, farmland, grass blocks, moss blocks, mycelium, podzol, and rooted dirt.

World generation

Aquifers

• Water levels change less often (slightly fewer underground waterfalls).
• Lava aquifers are slightly less common.

Caves

• Reduced the amount of flooded caves near river and ocean coastlines.

Ocean

• Removed deep warm ocean biomes.
  • Warm ocean biomes now generate in deep waters.

Seeds

• Have been reshuffled again. Worlds don't look like as they did in previous snapshots.

General

Chunk format

• Removed chunk’s Level and moved everything it contained up.
  • Level.Entities has moved to entities.
  • Level.TileEntities has moved to block_entities.
  • Level.TileTicks and Level.ToBeTicked have moved to block_ticks.
  • Level.LiquidTicks and Level.LiquidsToBeTicked have moved to fluid_ticks.
  • Level.Sections has moved to sections.
  • Level.Structures has moved to structures.
  • Level.Structures.Starts has moved to structures.starts.
  • Level.Sections[].block_states has moved to sections[].block_states.
  • Level.Sections[].biomes has moved to sections[].biomes.
• Added yPos the minimum section y position in the chunk.
• Added below_zero_retrogen containing data to support below zero generation.
• Added blending_data containing data to support blending new world generation with existing chunks.

Options

• The Priority Updates video setting has been renamed to Chunk Builder, added tooltips to its three options, and renamed them:
  • "nearby" renamed to "Fully Blocking".
  • "by player" renamed to "Semi Blocking".
  • "none" renamed to "Threaded".

Tick

• Changed some internal details of block and fluid ticking to improve save times.

Fixes

11 issues fixed

From released versions before Java Edition 1.18

• MC-49010 – Cloning pressure plates or buttons whilst they're activated keeps them pressed forever.
• MC-131930 – Deep warm ocean generates without coral and sea pickles.
• MC-156616 – Badlands layers not generating properly.
• MC-217379 – Pufferfish don't spawn in deep warm ocean.
• MC-224205 – Cloned big dripleaves remain tilted forever when their tilt value is not equal to "none".
• MC-228745 – Big dripleafs can't be supported by farmland.
• MC-238073 – Decorators are independent of world seed.

From the Java Edition 1.18 development versions

• MC-236615 – Priority updates setting has improper capitalization.
• MC-236624 – Deep warm oceans don't count towards the "Adventuring Time" advancement.
• MC-236970 – Badlands strata is covered by orange terracotta at Y=160 and above.
• MC-238939 – Stone can generate in the Nether.

21w44a

21w44a is the eighth and final snapshot for Java Edition 1.18, released on November 3, 2021, which improves the upgrading of old worlds, introduces new options, makes some tweaks, and fixes bugs. This is the final snapshot released in 2021.

Additions

World generation

Upgrading of old worlds

• Caves are now inserted under existing chunks when upgrading a world to the new world height.
  • Deepslate and the bedrock layer currently don't generate due to a bug.
• Large biomes and amplified worlds now have an upgrade path, and retain more of their characteristics when upgraded to the new terrain system.

General

Options

• Added "Online Options" as a separate screen:
  • The "Realms Notifications" option has been moved to this screen.
  • Contains the new "Allow Server Listings" option.
    • When deactivated, the player name doesn't show up in server online player listings.
  • Contains the new "Server Difficulty" option, to indicate the difficulty of the current server.

server.properties

• Added hide-online-players, which when set to "True", doesn't send a player list on status requests.

Tags

• Added following block tags to decide the corresponding creatures to spawn:
  • animals_spawnable_on
    • Contains grass block.
  • axolotls_spawnable_on
    • Contains clay.
  • foxes_spawnable_on
    • Contains grass block, snow, snow block, podzol, and coarse dirt.
  • goats_spawnable_on
    • Contains stone, snow, powder snow, snow block, packed ice, and gravel.
  • mooshrooms_spawnable_on
    • Contains mycelium.
  • parrots_spawnable_on
    • Contains grass block, air, #leaves, and #logs.
  • polar_bears_spawnable_on_in_frozen_ocean
    • Contains ice.
  • rabbits_spawnable_on
    • Contains grass block, snow, snow block, and sand.
  • wolves_spawnable_on
    • Contains grass block, snow, and snow block.

Changes

Gameplay

Advancements

• All 50 Overworld biomes are now required to be visited for the Adventuring Time advancement, including the following biomes which were previously not required:

Weather

• Sleeping now only resets the weather cycle if the weather is rain or a thunderstorm.

World generation

Deepslate

• Now the gradual transition from stone starts at height between Y=0 to Y=8, rather than Y=-8 to Y=0 previously.

General

JFR profiling

• If it is started from an external source, the JFR events for network packets are now aggregated instead of one event per packet.

Simulation distance

• Blocks and fluids are now also affected.
• Increased the lower limit for simulation distance from 2 chunks to 5 chunks.

General

• Optimized entity collisions.

Fixes

28 issues fixed

From released versions before Java Edition 1.18

• MC-63340 – Sleeping always resets time until rain.
• MC-170551 – Foxes can't spawn on podzol or coarse dirt.
• MC-187716 – Nether biome surface builder types incorrectly assume the world height is 128 blocks.
• MC-190285 – "bedrock_roof_position" tag number does not represent height, but height modifier.
• MC-200494 – In mineshafts, torches can generate attached to blocks other than the wooden supports.
• MC-216432 – Mineshafts can generate with light but without any torches.
• MC-216561 – Torches not spawning in abandoned mineshafts under Y=0.
• MC-238877 – Deep ocean and ocean are not needed for the "Adventuring Time" advancement.
• MC-238966 – Old growth spruce taiga and old growth birch forest aren't a part of the "Adventuring Time" advancement.
• MC-238968 – Windswept gravelly hills and windswept savanna aren't a part of the "Adventuring Time" advancement.

From the Java Edition 1.18 development versions

• MC-236701 – New mountain biomes don't count towards "Adventuring Time" advancement.
• MC-236938 – /jfr stop output does not have a link.
• MC-237986 – Mobs specific to structures aren't spawning in their structures.
• MC-238062 – Foxes and wolves don't spawn in groves.
• MC-238761 – Adventuring Time does not account for the new cave biomes.
• MC-238900 – Values of Infinity in noise settings in default worldgen.
• MC-238912 – Powder snow strips can't generate exposed to the surface.
• MC-238962 – Icebergs go all the way to ocean floor.
• MC-239280 – Withers do not move down to follow the player when the wither's health is half or lower.
• MC-239344 – All torches in mineshafts are facing the wrong way.
• MC-239359 – Wither skeletons can only spawn on nether bricks.
• MC-239689 – The "amplified" boolean in noise settings does nothing.

From the previous development version

• MC-239854 – Nether and caves world is missing bedrock.
• MC-239858 – Nether decorations can be generated on the original bedrock layer.
• MC-239866 – Terrain shaper in noise_settings is not used.
• MC-239876 – Maps appear gray when opened in old terrain after conversion.
• MC-239882 – Beacons deactivate when upgrading worlds.
• MC-239902 – Weather effects appear in caves and structures in 1.17.1 worlds loaded in 21w43a.

1.18 Pre-release 1

1.18 Pre-release 1 (known as 1.18-pre1 in the launcher) is the first pre-release for Java Edition 1.18, released on November 11, 2021, which readds amplified and large biomes, makes some tweaks, and fixes bugs.

Additions

General

World types

• Readded "Amplified" and "Large Biomes". Their implementation has been adapted accordingly to the terrain generation overhaul.
  • Amplified worlds have terrain with the following characteristics:
    • Terrain rounded at Y=320, instead of Y=256.
    • Doubled offset above sea level.
    • Greatly increased 3D noise values, resulting in lower factor values inversely.
    • Doubled peak jaggedness.
  • Large biome worlds have terrain with the following characteristics:
    • Most biomes, except mountain peaks and rivers, are four times larger.
    • Multinoise slowed down by factor 4 for temperature, vegetation, continentalness, and erosion, but not for ridge noise.

Changes

Blocks

Conduit

• Now has an assigned tool, the pickaxe.

World generation

Lava lakes

• Now only generate above Y=0.

Upgrading of old worlds

• Changed transition between old and new terrain to be less cliff-like.
  • Surface height, biomes, and caves will now blend much more smoothly.
• Deepslate and bedrock now properly generate in upgraded chunks.
• Cave carvers now properly generate in upgraded chunks.

Features

• Rewrote feature generation system.
• Now feature generations are configured with placed feature files.

General

Data generator

• --report option now creates full worldgen reference files instead of just biomes.

World creation screen

• Removed "Caves" and "Floating islands".

Fixes

49 issues fixed

From released versions before Java Edition 1.18

• MC-46584 – Clicking and dragging MOUSE3 (mouse wheel) over item slots incorrectly attempts to place full stacks in Survival.
• MC-50888 – Can get out of 30,000,000 area.
• MC-53444 – You can get outside of the world border by mounting a rideable entity (boat, pig, etc.) outside of it.
• MC-54119 – Can place/take water/lava/lily pads outside world border and inside spawn protection.
• MC-62550 – World border not correctly initialized for the End and Nether.
• MC-96535 – Ambient property of potion effects with ShowParticles:0b is not disregarded.
• MC-101334 – Required space for placing a boat is too small.
• MC-113425 – Player can interact with entities outside the world border.
• MC-117800 – Half bed can be placed outside the world border.
• MC-121997 – Every dimension's world border is operating independently, and doesn't appear where it actually is.
• MC-131808 – Forests don't spawn trees near the positive edges, but overstretch bounds on the negative edges.
• MC-135947 – Conduit takes a long time to break when underwater.
• MC-136523 – Invisible world border in the End dimension.
• MC-147122 – You can set your spawn point outside the world border using a bed or respawn anchor.
• MC-187174 – World border does not take Nether coordinates into account.
• MC-206620 – Cauldron invisible when crawling in it.
• MC-206660 – Stalactites don't fall properly if there are blocks directly below it.
• MC-214963 – Mineshaft generation is non-deterministic.
• MC-215139 – Some water in caves will not start flowing.
• MC-219035 – Fossil structures can't generate in far east and south blocks of a chunk.
• MC-222388 – Acacia trees under Y=0 often grow with bare branches.
• MC-229013 – Lava lake decorator config is unused.
• MC-229517 – Conversion sounds for strays and drowned is controlled by Friendly Creatures mixer, not Hostile Creatures.
• MC-231666 – Dragon egg can teleport to outside the world border.
• MC-240021 – Cullface arguments in cauldrons are excessive.

From the Java Edition 1.18 development versions

• MC-236610 – Lava lakes generate without stone around.
• MC-236628 – Lava pools cause sand to fall now instead of putting sandstone beneath it.
• MC-236652 – Weather can be incorrect sometimes within a biome.
• MC-236659 – Lava lakes spawn more on the surface than usual.
• MC-236803 – Extremely low amount of pillager spawns in outpost on jagged peaks, groves, snowy slopes and frozen peaks.
• MC-237040 – Falling blocks still sometimes disappear for a moment when landing.
• MC-237598 – Projectiles glitch around in the air when exiting simulation distance.
• MC-237621 – Missing biome definitions in some peak grid cells cause unintended ocean placement.
• MC-237791 – Villager spawn eggs used on grove, frozen peaks, snowy slopes and jagged peaks don't spawn snowy plains villagers.
• MC-237954 – The "Sound of Music" and "Feels like home" advancements are internally located in the incorrect tab folder.
• MC-238038 – Newly added advancements' namespace ID does not match its translation key.
• MC-238972 – Deserts generate with little or no sandstone.
• MC-239714 – Doing /locate desert_pyramid on a desert Superflat world freezes the world.
• MC-239851 – Upgrading old worlds causes leaves to change to surface builder blocks.
• MC-239852 – Lava pools intersecting strongholds can cause end portal frames to be deleted.

From the previous development version

• MC-240481 – Deepslate doesn't generate in the new cave generation under old chunks.
• MC-240482 – There is no bedrock in the Overworld in old chunks.
• MC-240495 – Deepslate does not generate below Y=0 in badlands or wooded badlands biomes.
• MC-240503 – Bedrock doesn't generate in badlands or wooded badlands.
• MC-240516 – Cave carvers don't generate below old chunks.
• MC-240531 – Block simulation distance is always 8 chunks regardless of the slider's value.
• MC-240534 – Clicking a JFR link copies full server-side path to clipboard.
• MC-240631 – Extremely slow End terrain generation.
• MC-240998 – Portals no longer load chunks as non entity processing.

1.18 Pre-release 2

1.18 Pre-release 2 (known as 1.18-pre2 in the launcher) is the second pre-release for Java Edition 1.18, released on November 16, 2021, which increased the required minimum Java version from 16 to 17, and fixed bugs.

Changes

General

Splashes

• Changed "Now Java 16!" to "Java 16 + 1 = 17!".

General

• The game now requires Java 17 instead of Java 16.
• When upgrading a world, new caves generate underneath the entire chunk, in all chunks that have any bedrock at height 0.

Fixes

43 issues fixed

From released versions before Java Edition 1.18

• MC-32813 – Floating water / lava above caves / cave carver doesn't update water.
• MC-206303 – Minecarts have old textures on the bottom.
• MC-217038 – Large dripstone structures can be generated outside the caves.
• MC-217056 – Some high-speed particles lag/freeze the game.
• MC-220061 – Painting back texture is mirrored.
• MC-223917 – Goats on fire do not attempt to pathfind towards water.
• MC-226689 – Albert Pastore's name is grey and improperly indented in the credits.
• MC-227163 – Credits say "IT Manager" instead of "IT Managers".
• MC-227204 – "Explore, dream, discover" quote no longer appears after new credits.
• MC-227206 – Random names in the new credits use curly quotes/apostrophes.
• MC-227231 – Steven Silvester's name might be misspelt in the credits.
• MC-227239 – In the credits, Elizabeth Batson's company name is improperly capitalized.
• MC-227329 – The usage and punctuation of "Inc" is still inconsistent in the credits.
• MC-231782 – Missing "(" in Frank Criscione credit.
• MC-237608 – Server address shown when connection fails during server startup.

From the Java Edition 1.18 development versions

• MC-236756 – Biome-exclusive mob spawn rates are reduced.
• MC-236858 – Seeds that spawn you in the middle of the ocean cause lag.
• MC-237275 – Game crashed when creating a single biome world with a custom biome / java.lang.NullPointerException: Cannot invoke "bze.a()" because the return value of "bzg.a(int, int, int)" is null.
• MC-238049 – Passive mobs (cows, pigs, sheep, chickens) sometimes do not spawn.
• MC-238076 – UpgradeData in chunk is not migrated to new world height.
• MC-238375 – Crash and/or data corruption upon attempting to save a world with a world border center over 30 million blocks.
• MC-238587 – Sprinting while flying into a block causes the screen to rapidly zoom in and out.
• MC-239423 – Kumi Tanioka isn't under "Music composed by" in the credits.
• MC-239856 – Upgrading old worlds causes vines to have the wrong block state.
• MC-239857 – Fences, iron bars, and glass panes often use an incorrect block state after conversion.
• MC-239884 – Water from old chunks don't properly propagate into new chunks.
• MC-239899 – Connected redstone does not properly upgrade from older versions.
• MC-239994 – Old worlds with non-bedrock blocks at 0,0,0 do not upgrade chunk column from 0,0,0 to 0,-64,0.
• MC-240030 – Infdev and Alpha holes in the world below Y=0 after conversion since 21w43a.
• MC-240494 – Duplicated mineshafts with new cave generation.
• MC-240507 – Mob Spawning in structures fails in pre-1.18 generated monuments/swamp huts/outposts.
• MC-240570 – Biomes in old chunks are not copied to new caves below Y=0 when chunks are extended.
• MC-240610 – "Allow Server Listings" option doesn't save its last setting.
• MC-240783 – Powder snow does not reduce or negate fall damage.
• MC-241111 – Some Mojang employees are not mentioned in the credits.

From the previous development version

• MC-241191 – Tripwires occasionally have incorrect block states after upgrading old worlds.
• MC-241194 – Crash: java.lang.NullPointerException: Cannot invoke "ddm.a(cao, cps, java.util.Random, gh)" because the return value of "java.util.function.Supplier.get()" is null.
• MC-241199 – Double chests have incorrect block states after upgrading old worlds.
• MC-241204 – Specific chunks reset each time world is loaded.
• MC-241208 – Powered buttons, pressure plates, and tripwire hooks remain powered forever after upgrading old worlds.
• MC-241231 – Floating campfire in a village.
• MC-241234 – Fossils get cut off at chunk borders.
• MC-241413 – Floating water generates around ravines.

1.18 Pre-release 3

1.18 Pre-release 3 (known as 1.18-pre3 in the launcher) is the third pre-release for Java Edition 1.18, released on November 17, 2021, which fixed bugs.

Changes

General

Server.jar

• Starting server.jar with an empty bundlerMainClass will now just validate and extract files, then exit.

Fixes

16 issues fixed

From released versions before Java Edition 1.18

• MC-109260 – Full-width punctuation characters are rendered incorrectly.
• MC-132285 – Isolated water block floating in mid-air.
• MC-185263 – Non full chunks in cache memory "semi-leak".
• MC-223840 – Lava blocks from "Lava Aquifers" don't get updated when a cave cuts through underneath them.
• MC-240229 – Rain and snow fall on the same blocks in a certain height range.

From the Java Edition 1.18 development versions

• MC-236740 – Server-side lag spike sometimes occurs when attempting to locate a buried treasure or opening/breaking a chest containing a map.
• MC-236764 – Lighting lags behind world generation.
• MC-239397 – Lava pockets generate in icebergs.
• MC-239610 – Severe world corruption due to 1.18 snapshots failing to deserialize chunks that 1.17 loads fine.
• MC-239682 – Out of memory crash: World generation exhausts Java heap space.
• MC-239950 – Feature placement doesn't check for biomes, causing unnecessary lag.
• MC-240483 – Foxes that spawn in grove biomes aren't the snowy variant.
• MC-240589 – Game froze for several minutes and then crashed while flying around and loading chunks.
• MC-241245 – Generated Deepslate overwrites ore veins (mainly Iron ore veins).
• MC-241255 – Gigantic Performance Drop after a couple of minutes.
• MC-241352 – Directory structure is not consistent between server and client.

1.18 Pre-release 4

1.18 Pre-release 4 (known as 1.18-pre4 in the launcher) is the fourth pre-release for Java Edition 1.18, released on November 17, 2021, which fixes bugs and crashes.

Fixes

4 issues fixed

From the Java Edition 1.18 development versions

• MC-241172 – Rare Datafixer error occurred in old world.

From the previous development version

• MC-241774 – Crash when going nether portals or creating a single biome world with nether biomes // java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0.
• MC-241775 – Crash when going through end portals or creating a single biome world with end biomes // java.lang.NegativeArraySizeException: -5.
• MC-241778 – Game crashes or freeze when loading and upgrading the 1.17.1 version of the Superflat world // java.util.concurrent.CompletionException: z: Biome decoration.

1.18 Pre-release 5

1.18 Pre-release 5 (known as 1.18-pre5 in the launcher) is the fifth pre-release for Java Edition 1.18, released on November 19, 2021, which fixes some bugs, many of which are relating to textures issues.

Additions

General

Tags

• Added following block tags:
  • azalea_grows_on
    • Contains #dirt, #sand, #terracotta, snow_block, and powder_snow.
  • azalea_root_replaceable
    • Contains #lush_ground_replaceable, #terracotta, and red_sand.
  • replaceable_plants
    • Contains grass, fern, dead_bush, vine, glow_lichen, sunflower, lilac, rose_bush, peony, tall_grass, large_fern, and hanging_roots.
  • terracotta
    • Contains terracotta, white_terracotta, orange_terracotta, magenta_terracotta, light_blue_terracotta, yellow_terracotta, lime_terracotta, pink_terracotta, gray_terracotta, light_gray_terracotta, cyan_terracotta, purple_terracotta, blue_terracotta, brown_terracotta, green_terracotta, red_terracotta, and black_terracotta.
• Added following item tags:
  • dirt
    • Contains dirt, grass_block, podzol, coarse_dirt, mycelium, rooted_dirt, and moss_block.
  • terracotta
    • Contains terracotta, white_terracotta, orange_terracotta, magenta_terracotta, light_blue_terracotta, yellow_terracotta, lime_terracotta, pink_terracotta, gray_terracotta, light_gray_terracotta, cyan_terracotta, purple_terracotta, blue_terracotta, brown_terracotta, green_terracotta, red_terracotta, and black_terracotta.

Changes

Blocks

Anvil

• Slightly changed the hammer texture on its GUI.

Barrel

• Bottom texture was changed.

Carrot

• Texture of crop stage3 was changed from to , removed an extra pixel.

Cartography table

• Texture was changed from to , to match the dark oak planks texture after being updated a second time in the Texture Update.

Cocoa beans

• Textures of cocoa pods (stage0 and stage1) were changed. This visually changes only particles.

Dirt path

• Side texture was changed to better match its top texture.

Door

• Changed door's model, to fix spruce door's top/bottom texture.
• Changed textures of oak doors and iron doors to remove a horizontal line.

Enchanting table

• Changed the texture of the lapis lazuli icon in the GUI from to .

Glass pane

• Top texture was changed to better match its side texture.

Lectern

• Base texture was changed to match the oak planks texture after being updated a second time in the Texture Update.

Logs

• Top textures of crimson stems and warped stems were changed, to match Bedrock Edition.
• Changed the top texture of dark oak log.
• Changed the side texture of stripped dark oak log, to match the color of its top texture.

Spruce planks

• Changed one miscolored pixel on their texture.

Stained glass

• Changed textures of blue stained glass and red stained glass, to match transparency of other types of stained glass.

Items

Beetroot seeds and melon seeds

• Textures were moved down by 1 pixel.

Mobs

Axolotl

• Texture of the wild axolotl was changed.

Evoker, vindicator and witch

• Removed hoods in their textures.

Illusioner

• Removed a few misplaced pixels in its texture.

Parrot

• The bottom texture of all parrots' wings has been flipped.

Non-mob entities

Armor stand

• Smooth stone outline texture was changed.

World generation

Random patch

• Melons are about 10 times more common than in previous snapshots.
• Pumpkins are about 6 times more common than in previous snapshots
• Sweet berry bushes are about 4 times more common than in previous snapshots.

Upgrading of old worlds

• If there is any bedrock at height 0 in a chunk, new world generation will happen under any non-air block at height 0 in that chunk.

Fixes

60 issues fixed

From released versions before Java Edition 1.18

• MC-138118 – Parrot wing texture is reversed on the bottom.
• MC-148422 – Stripped dark oak log side texture is too bright.
• MC-150567 – Dark oak log top texture bark ring not updated.
• MC-162038 – Pillagers have no hood texture.
• MC-162803 – Lily Pad mirrors texture when placed.
• MC-170557 – Spruce door top/bottom has the incorrect texture.
• MC-176309 – Illusioner has a few misplaced pixels left in their texture.
• MC-176824 – Red glass and outline of blue glass are slightly more opaque.
• MC-176833 – Anvil GUI hammer uses an outdated iron pallet.
• MC-177664 – Sound system warning messages are spamming the system log.
• MC-180398 – Too many sounds causes client to stall, limit can be easily reached with rabbits.
• MC-194822 – Glass pane top texture has not changed with the Texture Update.
• MC-194950 – Cactus in potted cactus is vertically squished.
• MC-198007 – Villages replace ice with path blocks instead of wood.
• MC-199662 – Extra pixels in cocoa pod textures as of Texture Update.
• MC-200046 – Cartography table planks texture is incorrect/slightly outdated.
• MC-200137 – Lectern base plate texture still uses the old planks texture.
• MC-200956 – Beetroot seeds texture is not vertically centered.
• MC-200957 – Melon seeds texture is not vertically centered.
• MC-202910 – Inconsistent highlight color on armor.
• MC-204901 – Side texture for dirt paths hasn't been updated with the texture update.
• MC-219132 – Cave vines hang from amethyst buds and clusters.
• MC-221172 – Warped and Crimson Stems use different top texture from Bedrock Edition.
• MC-222154 – Cave vines can generate hanging on pointed dripstone.
• MC-222763 – Armor stands use the old smooth stone slab texture.
• MC-225553 – Oak and iron doors have a line in their textures.
• MC-226711 – Carrot crop texture has an incorrect pixel.
• MC-227258 – Flowering Azalea Leaves are in both #minecraft:mineable/hoe and #minecraft:mineable/axe tags, while regular Azalea Leaves (and all other leaves) are only in #minecraft:mineable/hoe.
• MC-228900 – Cave vines can generate floating (Recurrence of MC-218817).
• MC-229977 – Breaking blocks with pistons on the east/west direction causes significant lag.
• MC-231219 – Cave vines can occasionally generate hanging on fences.
• MC-231272 – Cave vines can sometimes generate hanging on cobwebs.
• MC-231818 – You can no longer use the up or down arrow to navigate between servers in the multiplayer menu.
• MC-233883 – The hide and show messages buttons in the social interactions menu display their hover text regardless of the position of the cursor.
• MC-234039 – The back of wild axolotls are off-centered.
• MC-235567 – Clusters of dripstone (stalagmites) tend to generate abnormally frequent with thickness "tip" on tall caves.
• MC-241747 – Inconsistent Colors in grindstone GUI.

From the Java Edition 1.18 development versions

• MC-236723 – The Floating Islands preset does not seem to be generating correctly.
• MC-237500 – Azalea trees can generate on top of huge mushrooms, trees & bamboo.
• MC-238360 – Rooted dirt cannot replace terracotta.
• MC-238529 – Azalea trees can fail to generate.
• MC-238530 – Hanging roots can fail to generate.
• MC-238892 – Rooted dirt doesn't replace red sand.
• MC-239128 – Sweet berry bushes generate extremely rare in comparison with 1.17.1.
• MC-239143 – Terracotta generating into caves in eroded badlands.
• MC-239237 – Azalea trees can be generated on icebergs.
• MC-239474 – Autosaving now causes extreme and gameplay-impacting lag.
• MC-239489 – Melons generate rarely in jungle biomes.
• MC-239847 – Chunk blending occasionally produces sharp chunk border edges.
• MC-241256 – Some feature configs still expect a configured feature instead of a placed feature.
• MC-241278 – Azalea trees are no longer generating.
• MC-241539 – Stone generates in the side of hoodoos.
• MC-241566 – Mossy cobblestone boulders generate in a grid pattern in old-growth spruce taigas.
• MC-241588 – Cave vines can sometimes generate hanging on water.
• MC-241672 – Mobs don't panic when burning if standing on blocks placed above water.
• MC-241728 – Converting world to 1.18 pre-release 2 generates new caves in too many places.
• MC-241784 – Some sliders in options menu do not work properly.
• MC-241933 – Spore blossoms, cave vines, and pointed dripstones generate indented into the cave surface.

From the previous development version

• MC-241800 – Cannot change numbers for gamerules on world creation.
• MC-241847 – Floating stone platform doesn't generate in void superflat world preset.

1.18 Pre-release 6

1.18 Pre-release 6 (known as 1.18-pre6 in the launcher) is the sixth pre-release for Java Edition 1.18, released on November 22, 2021, which makes tweaks and fixes bugs.

Changes

World generation

Dripstone caves and lush caves

• Features are generated a bit more sparsely.

Sparse jungle

• Melons are now less common.

Upgrading of old worlds

• New cave generation under existing chunks with holes now fits together better with the blocks above it.

General

General

• Chunks are now saved whenever there is spare time to reduce autosave spikes.

Fixes

18 issues fixed

From the Java Edition 1.18 development versions

• MC-236947 – Signature attribute is stripped from java records.
• MC-238930 – Soul Sand and Soul Soil generate below the nether ceiling.
• MC-238959 – Falling block placing at Y=1 changes into dropped item when landing on Y=0.
• MC-239880 – Some chunks have missing blocks below 0.
• MC-239900 – Upgrading custom world to 21w43a ignores min_y and height.
• MC-240513 – Pandas do not spawn in bamboo jungles with Default world.
• MC-241263 – Off-heap memory leak.
• MC-241409 – Game crashes when terrain shaper data is missing.
• MC-241630 – Temperatures don't properly get converted.
• MC-241636 – Snow golems don't take damage in hot biomes when a cave biome is underneath.
• MC-241767 – Breaking a vine or ladder block while the player is climbing it while sneaking allows the player to hover in place indefinetly.
• MC-241820 – Ocean Monuments upgraded from previous versions appears to have the bounding box shifted to chunk borders north and west.
• MC-241830 – Windswept savannas in amplified worlds have the incorrect surface blocks.
• MC-241941 – Nether bedrock roof can generate exposed.

From the previous development version

• MC-242016 – Dripstone doesn't generate at high y values.
• MC-242022 – Game crashes when loading new chunks (Exception generating new chunk, caused by ArrayIndexOutOfBoundsException: Index 268435455 out of bounds for length 32).
• MC-242479 – Pointed dripstone makes holes in lava pools.
• MC-242520 – Horses, Donkeys and Pigs float above water when dismounted underwater.

1.18 Pre-release 7

1.18 Pre-release 7 (known as 1.18-pre7 in the launcher) is the seventh pre-release for Java Edition 1.18, released on November 23, 2021, which makes tweaks and fixes bugs.

Changes

Blocks

Dirt path

• Slightly changed the side texture, by moving up 1 pixel of the dirt part, to match up with the side of a dirt block.

Logs

• Changed the texture of stripped dark oak log again.

World generation

Dripstone caves and lush caves

• The numbers of features have been increased somewhat again.

Fixes

6 issues fixed

From released versions before Java Edition 1.18

• MC-218592 – Azalea trees can generate in more than two blocks of water.

From the Java Edition 1.18 development versions

• MC-241240 – Pointed dripstone can occasionally generate unwaterlogged when generating in water aquifers.
• MC-241277 – Server can't generate amplified/large biomes worlds from scratch.
• MC-241327 – Render Distance 13 at the world border causes excessive lag.
• MC-242068 – Dirt part of the Dirt Path texture is one pixel too low.

From the previous development version

• MC-242546 – When optimizing 1.17 world in 1.18, old Level Compound is not deleted, resulting in increased world size.

1.18 Pre-release 8

1.18 Pre-release 8 (known as 1.18-pre8 in the launcher) is the eighth and final pre-release for Java Edition 1.18, released on November 24, 2021, which fixes crashes and bugs.

Changes

Mobs

Ravagers

• No longer attack baby villagers.

Fixes

7 issues fixed

From released versions before Java Edition 1.18

• MC-227537 – Crash: java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectSet.remove(Object)" because "$$4" is null.
• MC-230866 – Eating whilst traveling through a Nether portal prints error in game log.

From the Java Edition 1.18 development versions

• MC-236783 – Parity issue: Ravagers still attack baby villagers in Java Edition.
• MC-241991 – Game freezes without crash logs when upgrading from 1.12.2 to 1.18 pre-5.
• MC-242375 – Cats no longer scare phantoms away.

From the previous development version

• MC-242646 – Falling in the void and trying to respawn crashes the game.
• MC-242647 – Crash for blocks finding block states: Missing Palette entry for index 6.

1.18 Release Candidate 1

1.18 Release Candidate 1 (known as 1.18-rc1 in the launcher) is the first release candidate for Java Edition 1.18, released on November 25, 2021, which increases the size limit for server resource packs and fixes a bug related to a memory leak.

Changes

General

Resource packs

• Size limit for server resource packs has been increased from 100 MB to 250 MB.

Fixes

1 issue fixed

From the previous development version

• MC-242708 – Moving through blocks in spectator mode causes a memory leak.

1.18 Release Candidate 2

1.18 Release Candidate 2 (known as 1.18-rc2 in the launcher) is the second release candidate for Java Edition 1.18, released on November 26, 2021, which fixes a bug related to world generation.

Fixes

1 issue fixed

From the Java Edition 1.18 development versions

• MC-242547 – In large caves, the cave generation can't reach Y=-54, not allowing to generate large lava lakes.

1.18 Release Candidate 3

1.18 Release Candidate 3 (known as 1.18-rc3 in the launcher) is the third release candidate for Java Edition 1.18, released on November 26, 2021, which fixes a bug.

Fixes

1 issue fixed

From the Java Edition 1.18 development versions

• MC-242859 – Blocks losing the loot inside them after dying.

1.18 Release Candidate 4

1.18 Release Candidate 4 (known as 1.18-rc4 in the launcher) is the fourth and the final release candidate for Java Edition 1.18, released on November 29, 2021, which fixes an issue with coal ore distribution.

Fixes

1 issue fixed

Other

• Fixed an issue where coal ore at lower heights (Y=0 to Y=192) is not distributed as intended since 1.18-pre1.