Java Edition 1.3.1/Development versions

This is a list of Java Edition 1.3.1 development versions.

12w15a

12w15a is the first snapshot for Java Edition 1.3.1, released on April 12, 2012.

Changes

Blocks

Dispensers

• Can now deploy boats on water, and minecarts on rails (variants included).

Items

General

• Stackable items now stack outside inventory when thrown to the ground individually.

Mobs

Slimes

• Decreased the spawning rate of slimes in superflat worlds.

Non-mob entities

Minecart with furnace

• Using a minecart with furnace in Creative mode acts as if the player gave it coal.

General

Controls

• The appropriate spawn egg is now given when pick blocking a mob while in Creative mode.
• ⇧ Shift+clicking can now be used to equip armor.
• ⇧ Shift+clicking can now be used to put items in enchantment tables.
• ⇧ Shift+clicking can now be used to put items in brewing stands. However, it does not work with the third potion slot yet.

12w16a

12w16a is the second snapshot for Java Edition 1.3.1, released on April 19, 2012.

Additions

Gameplay

Bonus chests

• Added bonus chest option to create world screen.
  • When enabled, starts the user off with a chest surrounded by torches nearby containing tools, items, and blocks helpful to starting a Survival game, bonus chests may contain:
    • Wood
    • Planks
    • Sticks
    • Stone and/or wooden pickaxe
    • Stone and/or wooden axe
    • Bread
    • Apples

Command format

Commands

• Added option to enable single-player commands to create world screen.
  • The following commands are available: /gamemode, /toggledownfall, /time, /give, /xp, and /kill.
  • These commands are enabled in previously generated Creative mode worlds.
  • While using commands in singleplayer, the world around is paused, unlike in multiplayer.
• Typing / then pressing Tab ↹ shows a list of available commands; pressing Tab ↹ while writing a command auto-completes its arguments.
• Each command is now its own class internally.

General

Demo mode

• Added a demo mode for non-premium users (won't be available until the full update).
  • In the language files, a new text was added for the demo mode.
  • The demo mode lasts for 5 in-game days (about 1 hour and 40 minutes) according to the language files.
  • It also teaches the player how to use the controls and how to begin playing.

Changes

General

Controls

• Items can now be deleted from the hotbar by shift-clicking while on the Creative mode item selection screen.

Language files

• Updated language files.

12w17a

12w17a is the third snapshot for Java Edition 1.3.1, released on April 26, 2012.

Additions

Blocks

Wooden slabs

• Slabs for each of the four types of wood added.
  • New block IDs 125 for double wooden slabs and 126 for single wooden slabs.
  • These new slabs no longer act like stone.
  • An axe should be used to break them.
  • They are no longer immune to fire and lava.
  • Wooden slabs created in older versions of Minecraft are still stone-like and fireproof and don't change to the new slabs when placed or mined.

Items

Book and quills

• Editable books, crafted using a book, feather, and ink sac.
  • When a book and quill is made, it can be right-clicked to open a screen that allows player to type in the book.
  • Pressing "Done" saves whatever was typed and allows player to edit the book again later, yet does not "sign" it.
  • When "signing" a book, it allows player to choose a title up to 16 characters long and disable editing of the book, the book and quill then becomes a written book, with the icon changing along with the label.

Written book

• Looks the same as a regular book, but has a shine like an enchantment.
• After being finished, the written book cannot be edited again.

Commands

General

• /help and alias /? added.

General

Options

• Added 'Chat Options'.
  • Added chat opacity, letting the chat be semi-transparent.
  • Added chat disabling, removing the chat for Multiplayer servers.
  • Added chat colors option.
  • Added "Only Commands" mode to chat.

Changes

Blocks

Ice

• Ice no longer turns into water in the Nether.

Saplings

• Now have their proper names (e.g. "Spruce Sapling").

Items

Books

• Now require leather to craft.

Tools

• Now have infinite durability in Creative mode.

Mobs

Animals

• Livestock, such as chickens, can now be "walked through" instead of pushing the player around in crowded pens.

Non-mob entities

Boats and minecarts

• Can now be destroyed in one hit in Creative mode.

Gameplay

Bonus chest

• The player can no longer have a bonus chest in Hardcore mode.

Creative mode

• Flying through water in Creative mode is no longer slow.

Enchantments

• Silk Touch can now retrieve ice and glass panes.

Command format

General

• Server commands now appear in italics in multiplayer.

Fixes

3 bugs fixed

• Fixed entity collision errors.
• Fixed the pick block function.
• Fixed chat issues.

12w18a

12w18a is the fourth snapshot for Java Edition 1.3.1, released on May 3, 2012.

This is the first version that makes singleplayer worlds run on a local server, resulting in the use of separate threads for rendering logic and world logic. This change resulted in a large number of broken features, several of which are yet to be fixed in the latest version, and on weak computers can result in server-lag in singleplayer.

Additions

Blocks

Wood, planks, and stone bricks

• Now have their proper names (e.g. "Oak Wood", "Spruce Wood Planks", "Mossy Stone Bricks").

Changes

Items

Book and quills

• Game no longer pauses when writing in a book and quill.

Cocoa beans

• Now obtainable from jungle tree leaves.

Signs

• Game no longer pauses when writing in a sign.

Wooden tools

• Now can smelt one item in a furnace.

Mobs

Villagers

• When spawned from spawn eggs, they now get a random profession.

Gameplay

Breaking

• The 1⁄4 second (5 tick) delay between block breaking has been removed for players in Survival. The player can now instantly mine a large amount of blocks in Survival simply by holding destroy if conditions are met.

Hardcore

• Hardcore is now available in multiplayer.

Singleplayer

• Separated server logic and client, therefore singleplayer is now a local server.

Command format

General

• Game no longer pauses when entering a command or pausing the game.

General

Debug screen

• Coordinates are now rounded to 5 digits.
• "ws", "fs" and "g" (Walking speed, flying speed and ground; "g" is true if the player is touching the ground).

Language

• Updated language files.

Splashes

• Splash "Mojang" screen now appears for 1 second instead of 3.

Texture packs

• Support and auto-download for server texture packs.

Server jar

• The server jar now accepts command-line arguments --demo, --port, --singleplayer, --universe, and --world. The old nogui argument still works for backward compatibility.

Removals

General

Features broken by the internal server

• Many features were broken or significantly changed due to the client-server split, many of which still remain absent from the game.

Distance effects

• The particles from adding an eye of ender to an end portal frame block no longer appear offset if performed at high distances from the world origin.
  • This is due to the fact that they simply did not appear at all from this snapshot onward, which is another bug entirely.
  • This bug resurfaced in Java Edition 19w14a when the aforementioned absent particles bug was fixed.

Player

• The player "Notch" no longer drops an apple in addition to his inventory.

Fixes

4 bugs fixed

• Fixed being unable to switch tools of the same kind in inventory.
• Fixed water destroying non-solid blocks when breaking them from above.
• Fixed picking a block in Creative with a tool in hand causing the tool to be lost.
• Fixed Silk Touch yielding only one slab from double slabs.

12w19a

12w19a is the fifth snapshot for Java Edition 1.3.1, released on May 10, 2012.

Additions

Blocks

Cocoa

• Added cocoa pods to jungles.
  • Generate on the side of jungle wood.
  • Have 3 stages of growth, a number of cocoa beans dropped depends on stage of growth.

Sandstone and smooth stone variants

• Now have their proper names (e.g. "Smooth Sandstone").

World generation

World type

• Added "Large Biomes" type.

Changes

Items

Cocoa beans

• Changed texture.

Cookies

• Now recover 2 points of hunger rather than 1.

General

Bonus chest

• Torches now spawn around bonus chests if each side has a block at the same height around it.

Server jar

• The server jar now accepts the command-line argument --bonusChest.

World generation

Biomes

• Increased the scale and depth of some biomes:

Biomes	Before 12w19a		After 12w19a
	Scale	Depth	Scale	Depth
Desert Hills	0.2	0.7	0.3	0.8
Forest Hills	0.2	0.6	0.3	0.7
Extreme Hills	0.2	1.3	0.3	1.5
Ice Mountains	0.2	1.2	0.3	1.3
Jungle Hills	1.8	0.2	1.8	0.5
Taiga Hills	0.2	0.7	0.3	0.8

Fixes

6 bugs fixed

• Enchanting bows and swords work again (Other tools now have tooltips, etc. once more).
• The End and the Nether generate normally again.
• Item repair works again.
• Starting a game in Creative no longer starts in Survival.
• Bonus chests work correctly again.
• Particles no longer activate wooden pressure plate with an arrow on it.

12w21a

12w21a is the sixth snapshot for Java Edition 1.3.1, released on May 24, 2012.

Additions

Blocks

Emerald ore

• Drops 1 emerald when mined.
• Generates in blobs of up to 10 blocks.

Ender chest

• Crafted with 8 obsidian and 1 eye of ender.
• All ender chests in a world have the same contents, if those contents change it affects the contents of all other ender chests.
• On multiplayer, the ender chest's contents are the same for all players on a server.

Sandstone stairs

• Have the same function and recipe as other stairs, but made of sandstone.

Items

Emerald

• Dropped when mining an emerald ore block.
• Used in villager trading.

Enchanted golden apple

• A second type of golden apple made with blocks of gold.
• After being consumed, the player receives 30 seconds of Regeneration IV, plus Resistance and Fire Resistance for 5 minutes.

World generation

Desert temples

• New generated structure in desert biomes that resemble pyramids.
• Have a TNT trap and loot chests inside.

Desert villages

• Villages that generate in desert biomes now are made of sandstone rather than wood and cobblestone.

Gameplay

Trading

• Villagers buy or sell the player emeralds in exchange for certain items.
• Trade with villagers by right-clicking on them, opening up a GUI with one buying slot and one selling slot.

Command format

Commands

• /seed
  • Displays the current world seed.

Changes

Blocks

Dispensers

• Eject water and lava source blocks from buckets.
• Also take water and lava source blocks if there is an empty bucket inside.

Gravel

• Changed texture.

Locked chest

• Removed old chest texture, causing locked chests to appear as the purple default block.

Items

Buckets

• Now stackable to 16.

Mobs

Passive mobs

• Can be easily pushed around by simply walking, most likely intended to help the player navigate through animal farms more easily.

Non-mob entities

Boats

• Now pass through lily pads without breaking the boat; the lily pad drops as an item instead.

Minecarts

• While sitting inside of a minecart, pushing the directional keys makes it move the direction player is pressing. This only works while the minecart is sitting on rails.

Gameplay

Creative

• Added snow to the Creative inventory.

Singleplayer

• Removed server jar dependency in singleplayer.

Sky

• Stars are more realistic.
  • They are now slightly smaller and slightly brighter.

General

Options

• Improved options menu.

Debug screen

• The F3 menu no longer has the frame time graph.

12w21b

12w21b is the seventh snapshot for Java Edition 1.3.1, released on May 25, 2012, which updates the creative inventory and fixes some of the bugs and crashes from the 12w21a snapshot.

Changes

Blocks

Emerald ore

• Texture changed from .

Gameplay

Chunks

• Saving and loading chunks is slightly faster.

Creative

• New inventory screen in Creative mode.
  • Blocks and items are sorted by category, each category in its own tab, the categories are: "Building Blocks", "Decoration Blocks", "Redstone", "Transportation", "Miscellaneous", "Foodstuffs", "Tools", "Combat", "Brewing", and "Materials".
  • The inventory can be searched for specific items: just start typing while in the inventory screen. The search results are displayed in the "Search Items" tab.
  • The player's Survival mode inventory is accessible via a tab with the chest as its icon.
  • Brewed potions are not included in their own category.
  • To close the new inventory window, the player must press 'Esc'. Using the default inventory key does not currently work.
  • Added monster egg to Creative inventory.

12w22a

12w22a is the eighth snapshot for Java Edition 1.3.1, released on May 31, 2012.

Additions

Blocks

Block of emerald

• Decorative storage blocks, crafted with 9 emeralds.

Tripwire and tripwire hooks

• String can be placed down to create tripwire. When walked on, these can activate tripwire hooks if there is a hook at each end of the string.

World generation

Jungle temple

• Generated structure that generate in jungle biomes.
• Comprised mainly of cobblestone and mossy cobblestone.
• Have dispenser and tripwire traps and chest loot.

Gameplay

Adventure mode

• New gamemode, only accessible with /gamemode 2.
• The player cannot break or place any blocks.
• The player can interact with any blocks, like doors and levers, and can buy from villagers.
• The player can still damage mobs.

Creative inventory

• Added potions, found in "Brewing" category.
• Added armor slots, 2x2 crafting grid, and an option to delete items in Survival inventory when in Creative.
• Added cobblestone monster egg, stone brick monster egg blocks and charcoal to the Creative inventory.

Command format

• Added /defaultgamemode command.

Changes

Blocks

Cauldron

• When exposed to rain, cauldrons have a chance to fill with water.

Emerald ore

• Now generates in blobs of 1 block.

Leaves

• Rain slowly drips through leaves.

Locked chest

• Top texture changed from
• Changed as a result of the addition of the texture of what would later become the block of emerald occupying the texture space of what used to be the chest texture.

Slabs

• Can now be placed upside-down when pointing at the upper half of the side of a block. This does not work with stairs.

World generation

General

• Some minor terrain changes.​

Gameplay

Enchanting

• Enchantment system has been rebalanced.
  • The maximum enchantment level has been lowered from 50 to 30.
    • As a result enchantment tables now require only 15 bookcases around them to allow maximum level enchantments.
  • With a full enchantment table set with bookshelves, at the bottom of the 3 enchantments, it always shows the player the highest number possible.
  • Using level 30 enchantments, the player has a lot more luck; almost all items get at least 2 enchantments.
  • Various actions now reward the player with experience orbs, such as mining ores (except gold ore and iron ore), using furnaces, and getting achievements.
  • Levels are now awarded linearly. It takes 17 experience to go up one level.

Inventory

• Blocks seen in inventory are oriented to the right instead of to the left.

Nether portals

• Have a very small chance of spawning zombie pigmen.

Singleplayer

• Pausing now works again in singleplayer.

Smelting

• Smelting in a furnace with a lava bucket now leaves an empty bucket for the player to retrieve.

Villager trading

• Added the 10 gravel + 1 emerald → 2-3 flint trade to farmers.
• Added the enchanted item trades to clerics (e.g. 1 iron pickaxe + 3 emeralds → 1 iron pickaxe with Fortune I).
  • Includes iron sword, iron pickaxe, iron axe, iron chestplate, diamond sword, diamond pickaxe, diamond axe, and diamond chestplate.
• Added the 1 emerald → 5 arrows trade.
• Switched the 2 eyes of ender → 1 emerald to 7-10 emeralds → 1 eye of ender.
• Removed the 36- 63 rotten flesh → 1 emerald trade.

General

Debug screen

• Pressing F reloads the chunks.

Fixes

10 bugs fixed:

• In the "Redstone" tab of the Creative inventory, the redstone torch is now on instead of being off.
• In the "Decoration Blocks" tab of the Creative inventory, the redstone torch has been removed.
• Fixed the size of slimes which was sometimes wrong in the previous snapshot.
• Fully charged arrows now show their particle effect again.
• Arrows are now stuck at the correct position in the block they hit.
• The language "English (US)" is available again.
• Fixed enderman often not shaking and opening their jaws when looked at.
• Fixed repeaters sometimes being stuck when loading the chunks they are in.
• The search tab does not automatically open up unless the player presses their chat key, allowing the inventory to be closed with the normal inventory key again.
• Fixed bug causing stacked buckets to disappear when used to milk cows.

12w23a

12w23a is the ninth snapshot for Java Edition 1.3.1, released on June 7, 2012.

Changes

Blocks

Stairs

• Now have the correct hitbox.

Tripwire

• Now activated by most entities, including arrows (but not an eye of ender or a bottle o' enchanting).
• The max distance has been increased to 40 blocks.

Wooden pressure plates

• Now detect arrows.

Non-mob entities

Boats

• Now can accelerate to faster than previous speeds.
• Easier to control.

Gameplay

Creative inventory

• Added end portal frame to the Creative inventory.

Enchanting

• Enchantment levels are slightly exponential again.
  • It now takes 825 experience to reach level 30.
  • The first 16 levels are linear, while level 17+ require more points per level to the maximum level of 30 (although one can still have more than 30 XP levels to spend).

Multiplayer

• The player can now see the cracking effect on blocks when other players mine blocks in multiplayer.

Texture packs

• Packs that are in folders and not in a zip file are recognized as a texture pack.
• Pack image is displayed for folder-based texture packs.

General

Controls

• Pressing F no longer reloads chunks.

Fixes

7 bugs fixed

• Fixed a bug when pistons pushed a wire.
• Villagers procreate again.
• Weather transitions are back.
• Slime and magma cube jumping animations have been fixed.
• Armor and tool enchantments now show to other players on multiplayer.
• Players are now able to skip the credits again.
• Pumpkins now face the correct direction on the player's head.

12w23b

12w23b is the tenth snapshot for Java Edition 1.3.1, released on June 7, 2012 to fix some of the bugs and crashes in the 12w23a snapshot.

Fixes

1 bug fixed

• Fixed frequent null pointer exceptions in Survival mode when blocks were instantly mined with a tool.

12w24a

12w24a is the eleventh snapshot released for Java Edition 1.3.1, released on June 14, 2012.

Additions

Gameplay

LAN

• Allowed those connected to a player's LAN network to join singleplayer games.
• The player can now use /publish to open their singleplayer game for LAN players to join. This is still very much work in progress, so it lacks some necessary settings such as what game mode players get, and if they should be able to use cheats or not.
• The /publish command is temporary, since the player cannot even access it if they have not enabled cheats (LAN connections will be GUI based in the future).

Command format

/tp

• Added the command from multiplayer to singleplayer.
• Allows teleporting between players.

Changes

Blocks

Ender chests

• Now has an inventory per player and not per world.
• Breaking it drops 8 obsidian, unless the player has Silk Touch enchantment.

Levers

• The player can now place levers on the underside of blocks, and upside-down.

Items

Tools

• Breaking a block that can be instantly mined by hand (short grass, torch, etc.) while holding a tool no longer reduces the tool's durability.

General

Language files

• End portal frames now have a tooltip.

Fixes

16 bugs fixed

• Fixed ender pearls and eye of ender not aligning properly in the inventory.
• Fixed the double chest GUI having the caption "Large Chest" in all languages.
• Fixed the "Destroy Item" tooltip appearing in other pages of the inventory occasionally.
• Partially remedied bug when Minecraft does not save the player's progress, stops generating chunks, and freezes all the mobs. This still occurs sometimes.
• Fixed the ender dragon not dealing any damage to the player after it has been hit once.
• Fixed explosions not pushing back players.
• Fixed buckets not picking up or placing water within the spawn protection.
• Fixed losing the items in the second trade box if the player exits a trade with a villager.
• Fixed missing sounds:
  • Fixed water-movement sound.
  • Fixed fire sound.
  • Fixed extinguish sound.
  • Fixed nether portal sound.
  • Fixed lava-stagnant sound.
  • Fixed lava-droplet sound.
• Fixed attempting to use a tripwire hook when right clicking.
• The texture pack folder button now works on Mac.

12w25a

12w25a is the twelfth snapshot for Java Edition 1.3.1, released on June 21, 2012.

Additions

Blocks

Stairs

• Added wooden stairs for the remaining three wood types (spruce, birch, and jungle).

Gameplay

LAN

• Added an "Open to LAN" menu in the in-game menu, which allows players to open their world to other players.
• In the menu, the player can choose to turn commands on or off, and choose the game mode.

Changes

Blocks

Slabs and stairs

• Redstone components (including redstone, repeaters, torches, levers, and pressure plates), torches and rails can now be placed on top of upside-down slabs and stairs.

Items

Arrows

• Arrows shot while in Creative mode can be picked up if approached, however, the player doesn't receive the arrow item when doing so.
• Potentially improved memory usage.

Mobs

Pigs

• Now drop 1-3 raw porkchops instead of 0-2.

Slimes

• Spawning in superflat world type was reduced.

World generation

The End

• The "sky" in the End has changed; it is now purple instead of greenish.

Gameplay

Drowning

• Removed the downwards knockback while drowning.

LAN

• The multiplayer menu now scans for LAN servers.

Villager trading

• Villagers may remove a trade option after it has been used at least 3 times.

Command format

/tp

• Now allows teleporting to specified coordinates.
  • The syntax for this is /tp [<target player>] <x> <y> <z>.
  • The other functionality of the /tp command is still there.

Fixes

9 bugs fixed

• A player's ender chest storage is no longer wiped on respawning.
• Fixed pistons not pushing back players.
• Fixed a crash bug when typing /time set day.
• Fixed a freeze bug when opening the texture pack folder from in-game.
• Fixed published games apparently staying open for visitors when the host leaves.
• Fixed villagers not showing hearts around them when mating.
• Fixed respawning causing player's skin to be set to the default until they leave and come back.
• Fixed being unable to hear TNT from more than 16 blocks away.
• Fixed being able to use bone meal in a dark room.

12w26a

12w26a is the thirteenth snapshot for Java Edition 1.3.1, released on June 27, 2012.

Changes

Blocks

Monster spawners

• Now support extra information for the mobs it spawns. This allows unmodified games to have spawners for special variants of mobs, the player still requires external or modified means to set these parameters, though.
  • Examples: charged creepers, endermen holding specific blocks, green robe villagers, villagers with custom trade offers.

TNT

• No longer drops as an item when broken in Creative mode.

Slabs

• Monsters can now spawn on upside down slabs.

Pistons

• Normal and sticky pistons now schedule extensions and retractions rather than executing them as soon as they are updated.

Mobs

Silverfish

• If under the Poison effect, they spawn silverfish from nearby monster eggs more quickly.

Gameplay

Performance

• Performance improvements.

Fixes

11 bugs fixed

• Spruce, birch and jungle wooden stairs can now be crafted.
• Removed sand and gravel duplication glitch.
• In creative mode, destroying a TNT block no longer drops a TNT block.
• Fixed changing the name of a world, loading that world, saving and quitting it undoing the world rename.
• Fixed game crashing when it automatically selects the "Scanning for LAN Worlds" item in the server list and user deletes it.
• Fixed arrow representing the player on the map item not pointing in the right direction.
• Fixed clicking "Save and Quit" or "Disconnect" twice quickly crashing the game.
• Fixed the multiplayer server fairly regularly dropping all players and showing many NullPointerExceptions in the console every few hours.
• Fixed save files being closed each time world was auto-saved.
• Fixed placing a piston in front of another which is powered, but not extended, causing the placed piston to become a "weird piston" and have the metadata value 7.
• Removed powered rail duplication glitch.

12w27a

12w27a is the fourteenth snapshot released for Java Edition 1.3.1, released on July 5, 2012.

Additions

Command format

/debug <start|stop>

• Starts/stops debug profiling.

Changes

Blocks

Nether wart

• Nether wart can now grow in the Overworld and the End.

Signs

• Signs are stackable up to 16.
• Crafting them now gives 3 signs instead of 1 with the same recipe.

Non-mob entities

Boats

• Boats now drop the boat item when destroyed by a player.

Gameplay

Creative inventory

• Creative inventory now shows status effects.

Experience

• Gaining experience from mining ore is now different for each type of ore (mining coal ore will give the player the least amount while diamond ore & emerald ore will give the most amount of XP).

Fixes

13 bugs fixed

• Newly added wooden stairs will now burn.
• Fixed /kill not working.
• Fixed powering specific glitched pistons crashing the game.
• Fixed a visual bug causing pistons to be partially invisible or in the wrong location momentarily.
• Fixed being able to place portals in the Nether in locations where they would end up in illegal locations in the overworld.
• Fixed the game crashing when publishing SP worlds with certain language settings.
• Fixed players on minecarts, boats or pigs and spider jockeys not being displayed in the correct location.
• Fixed a bug with dispensers.
• Fixed /say not accepting some strings form the console, often triggering the help dialogue.
• Fixed being able to transmute blocks to certain data values using an orientation-dependent tripwire bug.
• Fixed drinking potions in creative not consuming the potions, but still giving empty bottles.
• Fixed signs sometimes not saving the text when placing them.
• Fixed torches at the top of 1×1 vertical shafts not lighting up their own block.

12w30a

12w30a is the fifteenth snapshot for Java Edition 1.3.1, released on July 23, 2012.

Additions

General

Options

• Snooper settings
  • Allows the player to toggle whether their data are sent to Mojang for analysis and improvements. Shows which data is sent to Mojang.
• Added "Vertical Synchronization" in video settings.
  • Has to be toggled manually in options.txt.
• Fullscreen mode setting is now persistent.
  • Has to be toggled manually in options.txt.

Changes

Blocks

Stairs

• When placed on the upper half of a block's side, stairs are now upside-down.

Lava

• Now replaces air below y=11.

Mobs

Explosions

• Depending on difficulty, explosion damage is now scaled.
  • Peaceful: no damage.
  • Easy: ~50% less damage.
  • Normal: same damage as before.
  • Hard: ~33% more damage than before.
  • "In full diamond armor + hard difficulty a creeper can knock you down to 2 hearts."

World generation

The Nether

• Less laggy.

Command format

/gamemode

• Invalid numerical game mode IDs are no longer accepted. Previously, specifying an invalid ID would place the target player into Survival mode.

General

Debug screen

• In F3 mode, the y coordinate now shows both the feet level and the eye level.

Performance

• Accelerated chunk loading.
• Decreased lag spike frequency.
• Made chat work smoothly even when the server is lagging.
• Decreased unnecessary world updates.
• Decreased packets sent between client and server.

Explosions

• Creeper, fireball, and TNT explosions give off a knockback.

Fixes

19 bugs fixed

• Fixed existing signs not showing text.
• Fixed monster spawners all looking like pig spawners.
• Fixed ⌘ Cmd + C, ⌘ Cmd + x and ⌘ Cmd + V not working on Mac OS X.
• Fixed sneaking players' nameplates not staying hidden when loading the chunks the sneaking players are in.
• Fixed multiple chunks often not displaying.
• Fixed higher server-set view distances instantly kicking joining players.
• Fixed sections above Y=191 becoming invisible when loading worlds.
• Fixed not completely generated chunks not updating visually until walking into them.
• Fixed compasses not pointing to spawn but to X=8 & Z=8 after respawning.
• Fixed other players' fishing rod lines looking like they start from their feet.
• Fixed a bug with Unbreaking-enchanted tools and destroying blocks.
• Fixed being able to move LAN servers in the server list and crashing the game.
• Fixed opening SP worlds to LAN, saving and quitting it leaving the server running and showing up in the server list.
• Fixed pushing a minecart with the movement keys causing the camera to shake in the direction pressed.
• Fixed potion effects losing their graphical effects when traveling between dimensions.
• Fixed ghast's fireballs getting stuck mid-air when unloading their chunk, might apply to fire charges and blaze's fireballs as well.
• Fixed the last slot in the opened Creative inventory's hotbar being one pixel too short on all but the Survival inventory tabs, and a few pixels being off on the Survival inventory tab.
• Fixed blocks disappearing when player is placing them under themselves and jumps.
• Fixed the client trying to trample crops instead of letting the server dictate trampling.

12w30b

12w30b is the sixteenth snapshot for Java Edition 1.3.1, released on July 23, 2012, and fixes some of the bugs and crashes in the 12w30a snapshot.

Fixes

3 bugs fixed

• Fixed a null pointer exception.
• Fixed being unable to right-click on blocks.
• Fixed chests stacked on top of other chests not opening.

12w30c

12w30c is the seventeenth snapshot for Java Edition 1.3.1, released on July 24, 2012 to fix some of the bugs and crashes in the 12w30a and 12w30b snapshots.

Changes

• Removed 2x2 crafting grid from the Survival inventory tab in Creative mode.

Fixes

5 bugs fixed

• Fixed piston block animation bug.
• Fixed rain particles in certain biomes.
• Fixed monster spawners set to spawn FallingSand entity crashing the game.
• Fixed minor text bugs.
• Fixed portal placement.

12w30d

12w30d is the eighteenth snapshot for Java Edition 1.3.1, released on July 25, 2012, mainly to fix some of the bugs and crashes in the 12w30c snapshot.

Additions

Blocks

Bark

• Cannot be obtained legitimately.
• Six sides textures similar to wood.

Changes

Blocks

Wood

• Can now be placed in different orientations.

Gameplay

Experience

• Strongly decreased the amount of experience obtained from furnaces.

Fixes

3 bugs fixed

• Fixed non-standard blocks displaying incorrectly when tiled on a FallingSand entity.
• Fixed dragon eggs displaying as lava blocks while falling.
• Fixed thrown splash potions not saving their type when reloading the world.

12w30e

12w30e is the nineteenth and the final snapshot for Java Edition 1.3.1, released on July 25, 2012 to fix some of the bugs and crashes in the 12w30d snapshot.

Fixes

3 bugs fixed

• Fixed cocoa beans not being able to be planted on rotated wood blocks.
• Fixed duplication bug in Creative mode.
• Fixed the Survival inventory in Creative mode.

1.3

1.3 is the first and only pre-release for Java Edition 1.3.1, released on July 26, 2012.

Changes

Items

Blaze Powder, Boat, Bone Meal, Cactus Green, Charcoal, Coal, Cocoa Beans, Magma Cream, Diamond, Flint, Gold Nugget, Nether Wart, Raw Beef, Redstone Repeater, Rose Red, Rotten Flesh, and Steak

• Realigned their textures.

Gameplay

Heads-up display

• The block-breaking animation is now shown in F1 mode.

Superflat

• Respawning in superflat is no longer random.

Fixes

5 bugs fixed

• Fixed melon stem block misalignment.
• Fixed a crash bug.
• Fixed the chest armor slot being inaccessible in Creative mode's survival inventory tab.
• Fixed rotated wooden logs mined using Silk Touch enchanted tools dropping as rotated wooden logs.
• Fixed being unable to place slabs in the small gaps between another slab and the side of another block.