Updated 25 October 2026. Facts on this page come from minecraft.wiki, minecraft.net and the live Artemis PvP server; sources are listed at the bottom.
Slime Farm in Minecraft: How to Get Slimeballs
A slime farm spawns slimes on platforms in a slime chunk below Y=40, or in a swamp, then moves them to a kill area, often with an iron golem as bait. You must stay within 128 blocks so slimes spawn and do not despawn. Slimeballs make sticky pistons and slime blocks for redstone, and magma cream for Fire Resistance.
Where do you build a slime farm?
In a slime chunk, a 1 in 10 chunk picked by the seed on Java, digging out big spaces below Y=40, or in a swamp at night where slimes spawn on the surface. Find slime chunks with a seed map, or by watching where slimes spawn underground; see slime chunks.
How does a slime farm work?
- Spawning platforms: wide, flat layers with space for large slimes.
- Transport: an iron golem in the middle lures slimes, or water pushes them.
- Killing: large slimes split, so let them break down in a drowning or magma trap, or kill small ones by hand.
- Collection: hoppers under the kill area gather slimeballs.
Why does the AFK spot matter?
Slimes spawn and stay only when a player is within 128 blocks, and nothing spawns within 24 blocks of you. Stand where the platforms are in range but not too close. See mob despawning and the mob cap.
What are slimeballs for?
Sticky pistons and slime blocks for redstone, magma cream with blaze powder, and food for breeding frogs; leads now use string instead. See slimes and slime blocks.
Frequently asked questions
What Y level should a slime farm be?
Below Y=40 in a slime chunk.
Sources
Every fact on this page was checked against these pages; the wording is ours.