Slime Block

This article is about the block. For the mob, see Slime.

Slime Block

150px

Renewable	Yes
Stackable	Yes (64)
Tool	Any tool
Blast resistance	0
Hardness	0
Luminant	No
Transparent	Partial
Flammable	No
Catches fire from lava	No

A slime block is a translucent block that entities can bounce on. It may be used alongside a piston to move several connected blocks at once. Entities move slower on slime blocks. if an arrow hits a slime block it loops the sound over and over

Obtaining

Breaking

Slime blocks can be broken instantly, regardless of held items.

Block	Slime Block
Hardness	0
Breaking time
Default	0.05

Crafting

Ingredients	Crafting recipe
Slimeball

Usage

Landing on a slime block does not cause fall damage unless the player is sneaking.

Slime blocks are also slightly slippery, but less so than ice.

Slime blocks cause movement on top of them to slow down.

Bouncing

A player or mob that falls onto the top of a slime block bounces to a height proportional to the falling velocity. The bounce height quickly deteriorates. For example, a fall of 255 blocks produces a bounce height of about 50 blocks, while a fall of 50 blocks results in a bounce height of 22 blocks. The maximum bounce height is 57.625 blocks. Entities hitting the side of a slime block do not bounce, unless the slime block is moving using a piston.

A player holding the jump key performs a normal jump on contact with the slime block without taking fall damage. A player holding sneak does not bounce at all and takes fall damage. Landing on the edge of a slime block that is bordered by anything (including air) other than another slime block is treated like landing on a solid block, receiving fall damage and not bouncing.

Placing carpets, rails, trapdoors, redstone repeaters or redstone comparators on a slime block does not stop mobs from bouncing and not taking fall damage. Likewise, placing a pressure plate on a slime block does not stop mobs from bouncing, but the pressure plate still activates. Half-blocks such as Cakes and slabs stop the bouncing effect.

Most mobs bounce off slime blocks. Exceptions are chickens, ghasts and bats. Occasionally a horse may get stuck on a block when a player tries to spawn it on top of a slime block in Creative mode.

Items, falling sand/gravel, minecarts and boats do not bounce on slime blocks. Particles, however, do bounce. Players can also get around the fact that falling blocks, minecarts, and boats don't bounce by having sticky pistons with slime blocks bounce them.

Pistons

A				B

Piston A can extend because the slime block ignores the adjacent obsidian. Piston B cannot extend because the diamond block is prevented from moving by the obsidian and so the slime block also refuses to move.

File:Dico's fast engine compacted by Xbxp.png

A self-propelled aircraft engine. Place the top block of redstone and sticky piston last.

When being pushed by a piston, entities (except ender dragons, item frames and paintings) that are ahead are launched into the direction the block is pushed into. When pulled by a piston, no entities are launched.

When a slime block is pushed or pulled by a piston, it attempts to move all adjacent blocks in the same direction. The types of blocks that can be moved are the same as those that can be pulled by a sticky piston. Blocks that cannot be pulled by a sticky piston (i.e. all the blocks listed on the table on the pistons page) stay in place. The blocks that are moved may in turn push other blocks. For example, a slime block sitting on the ground attempts to move the ground block underneath itself, which pushes additional ground blocks in the direction of motion just as if it were being pushed directly by a piston.

Blocks such as Glazed terracotta, honey blocks, and Obsidian are exceptions; they do not move when adjacent slime blocks are moved.

When the adjacent block that is moved is also a slime block, that block attempts to move all its adjacent blocks. For example, a 2×2×2 cube of slime blocks may be pushed or pulled as a unit by a single piston acting on any of the blocks in the cube and attempts to move all blocks adjacent to the cube.

A slime block adjacent to a block that cannot be moved by pistons ignores the immobile block. However, if an adjacent block could be moved but is prevented by the presence of an immobile block, the slime block is also prevented from moving. This includes slime blocks being pulled rather than pushed, in which case the piston retracts without pulling anything. Liquids are an exception: they aren't moved, but neither do they stop a piston from pushing or pulling blocks into their space (usually destroying the liquid, and in a rare case displacing it through the piston).

Slime blocks are not pulled by a non-sticky piston, nor are they moved if an adjacent (non-slime) block is moved by a piston.

The maximum of 12 blocks moved by a piston still applies. For example, a 2×2×3 of slime blocks may be pushed or pulled by a sticky piston as long as no other movable blocks are adjacent to it.

A piston cannot move itself via a "loop" constructed of slime blocks, but self-propelled contraptions can be created with multiple pistons.

Data values

ID

Java Edition:

Name	Namespaced ID	Form	Translation key
Slime Block	slime_block	Block & Item	block.minecraft.slime_block

Bedrock Edition:

Name	Namespaced ID	Numeric ID	Form	Translation key
Slime Block	slime	165	Block & Item	tile.slime.name

History

Java Edition
1.8		December 20, 2013			Jeb posts the first image of the slime block. At this stage, slime blocks are known as "Bouncy Blocks".
		14w02a			32px Added slime blocks.
		14w18a			Slime blocks can now move adjacent blocks when moved by pistons.
					Slime blocks pushed upward by a piston now launch entities vertically into the air.
		14w19a			Slime blocks can now push entities sideways and downward when attached to a piston.
		14w25a			The texture of the inside block originally used the 10×10 center of the 16×16 slime.png file, however, since the addition of explicit texture referencing in block models in this snapshot, the center 10×10 section now has its own texture, due to limitations of the custom models not being able to access non-square texture files. However this change did not affect the actual appearance.
		14w32c			The breaking/placing sound of slime blocks has been changed to the hurt sound of slimes.
1.12		17w16a			Slime blocks no longer pull glazed terracotta attached to its side when pulled by sticky pistons.
		pre3			Slime blocks no longer pull glazed terracotta attached on any side, moved by any type of piston.
1.13		17w47a			The ID has been changed from slime to slime_block.
					Prior to The Flattening, this block's numeral ID was 165.
1.14		18w43a			32px The texture of slime blocks has been changed.
1.15		19w42a			Slime blocks no longer stick to honey blocks when pushed by pistons.
Upcoming Java Edition
1.17		21w08a			Slime Blocks have been moved to the redstone tab of the creative inventory
Pocket Edition Alpha
v0.14.0		build 1			32px Added slime blocks.
Bedrock Edition
1.10.0		beta 1.10.0.3			32px The texture of slime blocks has been changed.
1.14.0		beta 1.14.0.2			32px The texture of slime blocks has been changed to match Java Edition's texture.
					Slime blocks no longer stick to honey blocks when pushed by pistons.
Legacy Console Edition
TU31	CU19	1.22	Patch 3	1.0.1	32px Added slime blocks.
?					32px Slime blocks are a lot more see-through on this edition.
PlayStation 4 Edition
1.90					32px The texture of slime blocks has been changed.
New Nintendo 3DS Edition
0.1.0					32px Added slime blocks.

Issues

Issues relating to "Slime Block" are maintained on the bug tracker. Report issues there.

Trivia

• A minecart leaving a rail onto a slime block can continue on a rail on the opposite side if it has sufficient momentum leaving the initial rail.
• Slime blocks under soul sand make the player move slower than if the player was just walking on soul sand. This is also apparent with ice.
• Rabbits do not jump while on a slime block.
• Entities launched upward by a slime block on top of a piston achieve slightly more than 6.4 blocks of lift, including the lift from the piston. Entities launched sideways across normal blocks or air are moved 3.510 blocks in the direction of the launch.
• While falling, placing a slime block while just before impact prevents all fall damage.
• Slime blocks are invisible if seen from the clouds.
• Players walking on slime blocks move at 1.359 m/s, a speed reduction of around 70% from the normal walking speed.

Gallery

• Slimeblockzombie.gif

  A zombie bouncing on a slime block. Click to view animation.

• Kl66PIp.png

  Image posted by Jeb over Twitter posted to Imgur.

• 14w02a Banner.png

  The 14w02a Banner showing slime blocks in a slime shape. Obsidian is used for the eyes and the mouth.

• HeightOFBounceX2.png

  Testing of bounce heights. X axis is the start height in half blocks. Y axis is the return height in half blocks. Red line at the top is maximum possible bounce height in half blocks.

• Slime Block Story Mode.png

  Crafting a Slime Block in Minecraft: Story Mode