Slime
Reason: Health, damage and hitbox size for size
2
slimes, which spawn from trial spawnersSlimes are bouncy, cube-shaped hostile mobs that spawn deep underground in particular chunks, or on the surface in swamp biomes. They attack by jumping at their targets. They come in three sizes, and larger slimes split into smaller ones on death.
Health points |
Big: 16HP × 8 |
---|---|
Behavior |
Hostile |
Mob type | |
Attack strength |
Easy: |
Hitbox size |
Big: |
Spawn |
|
{ "title": "Slime", "rows": [ { "field": "'''Big:''' 16<span class=\"hidden-alt-text\">HP</span><span class=\"nowrap mc-hearts\"><span class=\"iconbar pixel-image nowrap\" style=\"--icon-offset:-1px;\" title=\"1 heart\">(link to File:Heart (icon).png article, displayed as 9px|link=|alt=♥)</span> × 8</span><br/>'''Medium:''' 4<span class=\"hidden-alt-text\">HP</span><span class=\"nowrap mc-hearts\"><span class=\"iconbar pixel-image nowrap\" style=\"--icon-offset:-1px;\" title=\"2 hearts\">(link to File:Heart (icon).png article, displayed as 9px|link=|alt=♥)(link to File:Heart (icon).png article, displayed as 9px|link=|alt=♥)</span></span><br/>'''Small:''' 1<span class=\"hidden-alt-text\">HP</span><span class=\"nowrap mc-hearts\"><span class=\"iconbar pixel-image nowrap\" style=\"--icon-offset:-1px;\" title=\"0.5 hearts\">(link to File:Half Heart (icon).png article, displayed as 9px|link=|alt=♥)</span></span><br/>", "label": "(link to Health article, displayed as Health points)" }, { "field": "Hostile", "label": "Behavior" }, { "field": "(link to Monster article, displayed as Monster)", "label": "(link to Mob article, displayed as Mob) type" }, { "field": "(values exceeds 1000 characters...)", "label": "Attack<br/>strength" }, { "field": "'''Big:'''<br/>Height: 2.08 blocks<br/>Width: 2.08 blocks <br/> '''Medium:'''<br/>Height: 1.04 blocks<br/>Width: 1.04 blocks <br/> '''Small:'''<br/>Height: 0.52 blocks<br/>Width: 0.52 blocks\n<sup class=\"noprint nowrap Inline-Template \" title=\"\">[<i>[https://minecraft.wiki/w/Talk:Slime <span title=\"Hitbox sizes may be inaccurate for Bedrock\" style=\"border-bottom: 1px dotted\">needs testing in Bedrock Edition</span>]</i>]</sup>(link to Category:Testing needed article, displayed as Category:Testing needed)", "label": "(link to Hitbox article, displayed as Hitbox size)" }, { "field": "(values exceeds 1000 characters...)", "label": "(link to Mob spawning article, displayed as Spawn)" } ], "invimages": [ "Slime Spawn Egg" ], "images": [ "Slime.png" ] }
Spawning Edit
Slimes spawn in 3 sizes: small, medium, and big. Slimes have an NBT tag, [Byte] Size, which determines their size. Small, medium, and big slimes have their Size
set to 0
, 1
, and 3
respectively. Using the /summon
or /data
commands, a slime can be given any Size
in the range from 0
to 126
(inclusive).[verify for Bedrock Edition]
A slime needs a space of 2.04×2.04×2.04 blocks to spawn, which must be clear of solid and liquid obstructions. When a slime attempts to spawn, the game checks to see if the space requirement is followed. Therefore, small and medium slimes are not able to spawn in 2-block tall areas even though it would normally be enough room for other small mobs. Any block within the space, even a glass pane, can prevent slimes from spawning.
- A button or any block without a collision hitbox can prevent a mob from spawning on the block below it, but doesn't count as an obstruction. This is because the game looks for an air block above it when trying to spawn a mob.
- In Java Edition, the space is centered on the top face of the block the slime spawns on.
- It should be noted that a trapdoor is treated like a full-block when the game looks for space to spawn mobs. Therefore, the effective spawning space the slime needs is 3×2.1×3 blocks.
- In Bedrock Edition, the space is centered in the northwest corner of a block. This means the effective spawning region is 2×2×2 blocks.[verify for Bedrock Edition]
The random distribution of slime sizes is affected by regional difficulty: chances range from 33% for each size at the low difficulty to 16% small, 33% medium, and 50% big with higher difficulty.
Swamps Edit
Slimes can spawn in swamps and mangrove swamps between the altitudes of Y=51 and Y=69 (inclusive) when the provided light level is 7 or less. They spawn most often on a full moon, and never on a new moon.
More precisely, the game checks two factors:
- If the light level is equal to or less than a random integer (from 0 to 7)
- If the fraction of the moon that is bright is greater than a random number (from 0 to 1)
If these conditions are met and the altitude is acceptable, there is a 50% chance of spawning a slime.
The light level requirement for slime spawning in swamps is different from that of most hostile mobs, which spawn only at light level 0.[1] This allows slimes in swamps to spawn in dimly-lit areas where most hostile mobs can't, allowing swamp-based slime farms to be built.
Slime chunks Edit
Slimes spawn in the Overworld in slime chunks below the layer of Y=40, regardless of the lighting or weather conditions.
About 1⁄10 of all chunks are generated as slime chunks, but they are not determined randomly. An algorithm is used to determine whether each chunk is a slime chunk.
Java Edition Edit
In Java Edition, slime chunks are determined pseudo-randomly by combining their chunk coordinates with the seed of the world.
This Java code can be used to print a message to the terminal indicating whether one specific chunk is a slime chunk.[verify for Java Edition]
import java.util.Random;
public class CheckSlimechunk {
public static void main(String args[])
{
// the seed from /seed as a 64bit long literal
long seed = 12345L;
int xPosition = 123;
int zPosition = 456;
Random rnd = new Random(
seed +
(int) (xPosition * xPosition * 0x4c1906) +
(int) (xPosition * 0x5ac0db) +
(int) (zPosition * zPosition) * 0x4307a7L +
(int) (zPosition * 0x5f24f) ^ 0x3ad8025fL
);
System.out.println(rnd.nextInt(10) == 0);
}
}
The chunk coordinates and the world seed are combined to make a specific RNG seed to generate a random integer between 0 and 9 (inclusive). If the random integer is 0, then the chunk is a slime chunk. World coordinates can be converted to chunk coordinates by dividing by 16 and then rounding down. The world coordinates and the chunk coordinates are both 32-bit integers (instances of int
).
Bedrock Edition Edit
In Bedrock Edition, the algorithm does not depend on the world seed, so the chunks that slimes can naturally spawn in inhabit the same coordinates for every world.[2]
Trial spawners Edit
Each trial chambers structure has a 25% chance to select slimes as the "small melee" mob for its trial spawners. This means only about 25% of trial chambers contain slime spawners within them.
Slimes from trial spawners spawn in sizes 1
(medium) and 2
(medium-large), unlike slimes that spawn in slime chunks and swamps, which come in sizes 0
, 1
and 3
respectively.[3]
During ominous trials, each ominous trial spawner has a 1⁄7 chance to dispense lingering potions of Oozing, which spawns two medium slimes upon an affected entity's death. Any type of trial spawner can dispense Oozing potions, regardless of the mob type it spawns.
Potions Edit
If an entity inflicted with the Oozing effect dies, two medium-sized slimes appear at its death location.
In Java Edition, Oozing only spawns slimes in a 5×5×5 cube up to the maximum entity cramming count (default to 24).
Drops Edit
On death Edit
From a single large slime, a player can expect an experience and slimeball yield of 12-28 and 0-32, respectively. The average yield from a single large slime is usually around 19 experience and 9 slimeballs.
Large slime Edit
- Spawns two to four medium slimes on death
- 4XP when killed by the player
Medium slime Edit
- Spawns two to four small slimes on death
- 2XP when killed by the player
Small slime Edit
Item | Roll Chance | Quantity (Roll Chance) | ||||
---|---|---|---|---|---|---|
Default | Looting I | Looting II | Looting III | |||
![]() | Slimeball | 100%[d 1] | 0–2 | 0–3 | 0–4 | 0–5 |
![]() | Slimeball | 100%[d 2] | 1 | 1 | 1 | 1 |
1XP when killed by the player
Behavior Edit

Slimes move by hopping, which they do every 10 to 30 ticks (1⁄2 to 1 1⁄2 seconds). They can swim in water and climb ladders and scaffolding. Unlike other mobs, slimes continue moving when no players are nearby. Their exact routine is as follows:
The slime searches for a player (or, failing that, an iron golem) within 16 blocks (spherical) distance.
- If no target is found, the slime waits 10 to 30 ticks (1⁄2 to 1 1⁄2 seconds) between jumps, and changes direction randomly every 40 to 100 ticks (2 to 5 seconds).
- If a target is found, the delay before jumping is 1⁄3 as long (3 to 10 ticks), and the slime's direction is set directly toward the target before jumping.
Unlike most mobs, slimes do not pathfind toward their target, always approaching their target in a straight line without avoiding environmental hazards such as lava, cactus or dangerous falls. This means they can easily get stuck in corners or behind walls, not knowing how to circumvent them. This behavior is shared by magma cubes.
A slime's maximum health is equal to its size squared, and its dimensions are 0.51 blocks times its size in each dimension. When a slime attacks, it deals damage equal to its size, except for size 0 (smallest) slimes, which do no damage, and do not prevent sleeping. Because small slimes still have a hostile AI, they continuously attack the player.
A slime's jump distance also depends on its size; a slime jumps a distance slightly farther than its length. When landing, a number (8 times the slime's size) of slime particles appear. Regardless of size, slimes always jump 1 block high.
When a slime larger than 0 dies, it spawns 2-4 new slimes equivalent to its size divided by 2, rounding down. In Java Edition and in Bedrock Edition 1.21.80[upcoming], a slime that was named with a name tag produces smaller slimes with the same name when it dies.
Slimes continuously damage all players, snow golems[Bedrock Edition only], and iron golems they collide with (although damage immunity reduces the actual damage to 1 attack every half second), unlike other mobs that damage only those targets they specifically attack.[4]
Slimes in water attempt to swim to the surface if possible. If forced to stay submerged, they eventually drown, splitting into smaller slimes that drown and finally drop slimeballs.
Slimes are immune to Oozing.
Sounds Edit
Java Edition:
Slimes use the Hostile Creatures sound category for entity-dependent sound events.
[hide]Sounds | ||||||||
---|---|---|---|---|---|---|---|---|
Sound | Subtitles | Source | Description | Resource location | Translation key | Volume | Pitch | Attenuation distance |
Slime attacks | Hostile Creatures | When a slime attacks something | entity | subtitles | 1.0 | 0.8-1.2 | 16 | |
Slime dies | Hostile Creatures | When a non-small slime dies | entity | subtitles | Large: 1.2 Medium: 0.4 | 0.64-0.96 | 16 | |
Slime dies | Hostile Creatures | When a small slime dies | entity | subtitles | 0.0 | 1.12-1.68 | 16 | |
Slime hurts | Hostile Creatures | When a non-small slime is damaged | entity | subtitles | Large: 1.2 Medium: 0.4 | 0.64-0.96 | 16 | |
Slime hurts | Hostile Creatures | When a small slime is damaged | entity | subtitles | 0.0 | 1.12-1.68 | 16 | |
Slime squashes | Hostile Creatures | When a non-small slime jumps | entity | subtitles | Large: 1.2 Medium: 0.4 | 0.64-0.96 | 16 | |
Slime squashes | Hostile Creatures | When a small slime jumps | entity | subtitles | 0.0 | 1.12-1.68 | 16 | |
Slime squashes | Hostile Creatures | When a non-small slime lands | entity | subtitles | Large: 1.2 Medium: 0.4 | 1.0-1.5 | 16 | |
Slime squishes | Hostile Creatures | When a small slime lands | entity | subtitles | 0.0 | 1.0-1.5 | 16 |
[hide]Sounds | |||||
---|---|---|---|---|---|
Sound | Source | Description | Resource location | Volume | Pitch |
Friendly Creatures | When a slime dies | mob | 1.0 | 0.8-1.2 | |
Friendly Creatures | When a slime is damaged | mob | 1.0 | 0.8-1.2 | |
Hostile Creatures | When a non-small slime jumps or lands | mob | 1.0 | 0.64-0.96 | |
Friendly Creatures | When a small slime jumps or lands | mob | 1.0 | 0.64-0.96 | |
None | None | When a slime attacks something | mob | 1.0 | 0.8-1.2 |
Hostile Creatures | Unused sound event | mob | 1.0 | 1.0 |
Data values Edit
ID Edit
Name | Identifier | Entity tags | [hide]Translation key |
---|---|---|---|
![]() | slime | frog_food no_anger_from_wind_charge non_controlling_rider | entity |
Name | Identifier | Numeric ID | [hide]Translation key |
---|---|---|---|
![]() | slime | 37 | entity |
Entity data Edit
Slimes have entity data associated with them that contains various properties.
- [NBT Compound / JSON Object] Entity data
- Tags common to all entities see Template:Nbt inherit/entity/template
- Tags common to all mobs see Template:Nbt inherit/mob/template
- [Int] Size: The size of the slime. Note that this value is zero-based, so 0 is the smallest slime, 1 is the next larger, etc. The sizes that spawn naturally are 0, 1, and 3. Values that are greater than 126 get clamped to 126.
- [Byte] wasOnGround: 1 or 0 (true/false) - true if the slime is touching the ground.
Achievements Edit
[hide] | |||||||
---|---|---|---|---|---|---|---|
Icon | Achievement | In-game description | Actual requirements (if different) | Gamerscore earned | Trophy type (PS) | ||
PS4 | Other | ||||||
![]() | ![]() | It Spreads | Kill a mob next to a catalyst | — | 10 | Bronze | |
![]() | ![]() | Monster Hunter | Attack and destroy a monster. | Kill a hostile mob or one of the following neutral mobs: an enderman, a piglin, a zombified piglin, a spider, or a cave spider. | 15 | Bronze | |
![]() | ![]() | Overkill | Deal nine hearts of damage in a single hit. | Damage can be dealt to any mob, even those that do not have nine hearts of health overall. | 30 | Bronze | |
![]() | ![]() | Over-Overkill | Deal 50 hearts of damage in a single hit using the Mace | — | 20 | Silver |
Advancements Edit
Video Edit
Note: This video is from 2012. Since then, slime spawning in swamps has been added to the game.
History Edit
[hide]Java Edition Alpha | |||||||
---|---|---|---|---|---|---|---|
v1.0.11 | ![]() ![]() ![]() | ||||||
Slimes are the fifth hostile mob added to the game. | |||||||
There are three sizes of slimes: small, medium, and big. Their exact size values in comparison to modern slimes is unknown. | |||||||
On death, non-tiny slimes split into smaller slimes only if they are dealt exactly the same damage as their remaining health. | |||||||
v1.0.12 | Big slimes no longer spawn in Peaceful. | ||||||
Slimes now have sound effects. | |||||||
The targeting and attacking of slimes has been fixed. | |||||||
v1.0.13 | ![]() ![]() ![]() | ||||||
v1.0.14 | Slime spawning has been reduced as they now appear in abundance. | ||||||
A miscalculation in the new limit has now caused slimes to spawn only in strange locations, so natural slime spawning has been disabled. | |||||||
v1.0.17 | Slimes now spawn in multiplayer. | ||||||
v1.2.0 | Slime spawning has been completely disabled. | ||||||
[hide]Java Edition Beta | |||||||
1.2_01 | Slimes have been returned to the game. | ||||||
Small slimes now drop 0 - 2 slimeballs.[5] | |||||||
Slimes are currently rare. | |||||||
1.3 | Slimes have now become more common. | ||||||
1.4 | A multiplayer bug has been fixed where slimes split were visible only to the player that caused them to split and would not take any damage.[6] Because these slimes were client-side, the player could remove them only by exiting and logging back into the server. | ||||||
1.5 | Slimes no longer spawn in Peaceful difficulty and attack only when provoked. | ||||||
[hide]Java Edition | |||||||
1.0.0 | Beta 1.9 Prerelease | Non-tiny slimes now split into smaller slimes when they receive more damage than their remaining health. | |||||
Beta 1.9 Prerelease 5 | Slimes now spawn on levels 0-39 rather than 0-16, making them much more common. | ||||||
1.1 | 11w49a | Added slime spawn egg, allowing the player to spawn slimes. | |||||
1.3.1 | 12w15a | The slime spawning rate in superflat worlds has been decreased. | |||||
12w25a | The slime spawning rate in superflat worlds has been decreased, even more. | ||||||
1.4.2 | 12w38a | Slimes now have a new mob sound, the same as magma cubes, to make the sounds more realistic. | |||||
12w40a | Slimes are now easier to find as they spawn in swamp biomes at low light level. Since slimes can't swim, it is quite likely that they jump in deep water and eventually drown. | ||||||
1.5 | 13w10a | Slime spawn rates in swamps now depend on the current moon phase. | |||||
1.7.2 | ? | Huge slimes can now spawn while summoning with a command block. | |||||
1.8 | 14w06b | Slimes can now swim as a result of the update to the new AI. | |||||
Slimes now randomly change direction every so often, reducing the chance of them getting stuck in walls or corners. | |||||||
Slimes now randomly despawn over time if no player is within a 32 block range. | |||||||
The jumping mechanics of slimes have been changed. The distance they are able to jump corresponds to their size; they jump approximately the same distance as the length they are. They also turn and face their whole body to the player while attacking. | |||||||
1.14 | 18w43a | ![]() ![]() ![]() | |||||
19w08a | Hitbox side length for sizes 0, 1, 3 (small, medium, big) changed from 0.51, 1.02, 2.04 to 0.5202, 1.0404, 2.0808, respectively. | ||||||
1.16 | 20w06a | Small slimes now make sounds again when moving.[7] | |||||
1.17 | 21w10a | The maximum size of slimes is now 127. | |||||
1.20 | 23w18a | Slimes are now affected by the Jump Boost effect.[8] | |||||
1.20.2 | 23w33a | The sounds of slimes are now controlled by the "Hostile Creatures" instead of the "Friendly Creatures" sound slider.[9] | |||||
1.20.3 Experiment | 23w45a | Slimes now spawn in trial chambers behind the "Update 1.21" experimental data pack. | |||||
1.20.5 | 24w03a | Hitbox side length for sizes 0, 1, 3 (small, medium, big) changed from 0.5202, 1.0404, 2.0808 to 0.52, 1.04, 2.08, respectively. | |||||
1.20.5 Experiment | 24w13a | Two medium size slimes spawn when an entity (except boss mobs and slimes) dies with the Oozing effect. | |||||
pre1 | Oozing now spawns slimes in a 5×5×5 volume up to the max entity cramming count. | ||||||
[hide]Pocket Edition Alpha | |||||||
v0.9.0 | build 1 | ![]() ![]() ![]() | |||||
build 2 | Slimes now have sounds. | ||||||
Slimes now spawn naturally. | |||||||
v0.10.0 | build 1 | Slimes now have bouncing animations. | |||||
v0.12.1 | build 1 | Slimes now have particles when jumping. | |||||
Slimes now drop slimeballs.[verify] | |||||||
v0.13.0 | build 3 | The spawning of slimes has been improved. | |||||
[hide]Bedrock Edition | |||||||
? | Slimes spawn commonly in flat worlds. | ||||||
1.10.0 | beta 1.10.0.3 | ![]() ![]() ![]() | |||||
1.16.201 | Slimes no longer spawn at ground level on flat worlds. | ||||||
1.20.60 Experiment | Preview 1.20.60.20 | Slimes now spawn in trial chambers behind the "Update 1.21" experimental toggle. | |||||
1.20.70 Experiment | Preview 1.20.70.21 | Slimes no longer retaliate against attacks from breezes. | |||||
1.21.0 Experiment | Preview 1.21.0.20 | When an entity with the Oozing effect dies, two medium size slimes spawn. | |||||
[hide]Upcoming Bedrock Edition | |||||||
1.21.80 | Preview 1.21.80.20 | A slime named with a name tag now produces smaller slimes with the same name when it dies. | |||||
[hide]Legacy Console Edition | |||||||
Xbox 360 | Xbox One | PS3 | PS4 | PS Vita | Wii U | Switch | |
TU1 | CU1 | 1.00 | 1.00 | 1.00 | Patch 1 | 1.0.1 | ![]() ![]() ![]() |
TU9 | Added slime spawn egg, allowing the player to spawn slimes. | ||||||
TU14 | 1.04 | The slime spawning rate in superflat worlds has been decreased. | |||||
TU19 | CU7 | 1.12 | 1.12 | 1.12 | Slimes can now spawn in swamps at night. | ||
[hide]New Nintendo 3DS Edition | |||||||
0.1.0 | ![]() ![]() ![]() |
Data history Edit
[hide]Java Edition | |||||||
---|---|---|---|---|---|---|---|
1.11 | 16w32a | The entity ID for slimes has been changed from Slime to slime . | |||||
1.13 | 17w47a | Numeric IDs for entities were presumably deprecated in this version.[more information needed] |
Issues Edit
Issues relating to "Slime" are maintained on the bug tracker. Issues should be reported and viewed there.
Trivia Edit
- In Java Edition, the size of slimes can be customized with commands. Sizes go from 1 up to 127; the size-127 slime is the largest of any mob in the game, bigger than the ender dragon.
- Because a slime's movement speed is tied to its size, it becomes impossible for the player to outrun a size 8 slime on flat ground without potion effects.
- When a slime searches for nearby targets or checks to see if it should despawn, it checks from a point at the center of its hitbox on the x and z-axis and the bottom of its y-axis. Therefore, a custom-size slime sufficiently huge can be right in front of the player and be completely passive, and it may even despawn if the slime is large enough.
- Green-colored slimes are also present in Minicraft, a 2D Minecraft-inspired game also created by Notch.
- A player inside a slime can see the slime itself inside of a slime block.
Gallery Edit
Screenshots Edit
-
Small: 0.52 block cube.
-
Medium: 1.02 block cube.
-
Big: 2.04 block cube.
-
Slimes of various sizes underground.
-
A big slime covering a minecart.
-
A group of slimes within a Superflat world.
-
A group of slimes within a village.
-
A group of slimes within a swamp.
-
The largest possible slime size: size 127.
-
A size 10 slime compared to an oak tree.
-
A group of slimes within a cave.
-
A group of three slimes are led out of a cave onto the surface.
-
14 small slimes that spawned from a single big slime in a flat world.
Mojang screenshots Edit
-
A slime within pocket edition alpha.
-
Slimes in a swamp.
Textures Edit
-
Slime texture file.
In other media Edit
-
Artwork of a slime.
-
Artwork of a slime used for the 10th anniversary.[10]
-
A group of slimes within the promotional artwork for the first Caves & Cliffs update.
-
A banner of a slime.
-
Nitwit children kicking around a slime like a ball.
-
A slime within Minecraft Dungeons.
-
Prison Slimes, a slime variant that can be found within Minecraft Story Mode Season 2.
-
A Slime Spirit within Super Smash Bros. Ultimate.
-
A LEGO slime.
-
An Official LEGO Minecraft small slime.
-
"Frogs," an official T-Shirt design featuring two slimes.
See also Edit
Magma Cube – A similar mob that spawns only in the Nether and drops magma cream
Tropical Slime - A variant found in Minecraft Dungeons and in Minecraft Earth
External links Edit
- "Mob Menagerie: Slime" by Duncan Geere – Minecraft.net, February 6, 2025.
References Edit
- ↑ MC-252424 — Slimes spawn at light levels greater then 0 in Swamps — resolved as "Works As Intended".
- ↑ The Bedrock Edition slime chunk algorithm was reverse engineered by @protolambda and @jocopa3 and can be found on GitHub:[1]
- ↑ MC-266502 — Trial spawners spawn slimes of "Size: 2" which otherwise never spawn — resolved as "Works As Intended".
- ↑ MC-131426
- ↑ http://getsatisfaction.com/mojang/topics/will_slimes_ever_return_to_minecraft
- ↑ http://www.youtube.com/watch?v=wyNvBkn4E3U
- ↑ MC-97958 — Small slime has no jump or squish sound — resolved as "Fixed".
- ↑ MC-48923 — Slime/magma cubes not affected by jump boost potion effect — resolved as "Fixed".
- ↑ MC-118616 — The sounds of magma cubes and slimes aren't controlled by the "Hostile Creatures" sound slider — resolved as "Fixed".
- ↑ "Celebrate with Us" – minecraft.net.
Edit
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