Your world seed map · Java 26.3
Enter your world seed, generation version and dimension to locate biomes and structures. Ore deposits still require the depth and tool instructions below.
WHERE & HOW TO FARM
Farm slimeballs in Java Edition
Java Edition — swamp or mangrove swamp at Y=51–69, or a confirmed slime chunk below Y=40.
SEE WHERE TO GO
Interactive location map
Interactive maps & location tools
Before you go
- Combat gear and a safe way to collect drops.
- For a swamp route: access to a swamp and suitable moon and light conditions.
- For a chunk farm: seed-specific slime-chunk location and an excavated spawning area.
- Stay within the applicable player spawn range.
Farming steps
- Choose the swamp route or determine a slime chunk for your world seed.
- For a swamp, hunt within Y=51–69 where light is 7 or lower; a full moon is more favorable and a new moon prevents swamp slime spawning.
- For a chunk farm, excavate valid spawning space below Y=40 in the confirmed chunk.
- If using a chunk room, consider reducing nearby cave spawn competition and provide a collection area beneath the kill zone.
- Stay within player range while waiting for spawns; natural spawning does not operate as a guaranteed-rate machine.
- Fight slimes and continue killing each split stage until the smallest slimes are defeated.
- Collect slimeballs and repeat until the intended crafting supply is ready.
- The swamp route avoids excavating a chunk room but depends on moon and light conditions.
- Slime chunks vary by seed; confirm the chunk before investing in a large excavation.
Repeat, collect and use
Repeatable while conditions and player proximity allow spawning; slimeballs require killing the smallest split stage.
Common mistakes
- Stopping at a large slime: continue through its split stages to target the small slimes.
- Using swamp rules for a chunk farm: chunk slimes spawn below Y=40 regardless of light or weather.
- Building in an unconfirmed chunk: identify the seed-specific location before excavation.
When to stop or switch
Stop when your slimeball stock meets the recipe need; switch routes if swamp conditions are poor and you have a confirmed chunk.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.
