FAQ
I can't find any productive slimes
They only spawn in the Slimy Land, and only where the light level is above 8. Normal slimes in swamps and slime chunks are vanilla slimes and can't be caught in a jar.
My two slimes won't breed
Check, in order:
- Both are adults (size 2 or more). Small slimes eat food to grow instead of falling in love.
- Both were fed their own food.
- Neither is resting. After breeding, a slime waits 5 minutes. Jade shows the time left.
- The catalyst block is within 2 blocks of the parents, if the recipe needs one.
- The pair actually has a recipe. Two different types with no matching recipe never breed. Check the breeding table.
I got the parents' type instead of the one I wanted
Two parents of the same type make a baby of that type when no recipe's catalyst is nearby. Move the catalyst closer: it must be within 2 blocks of the slimes.
The pen stopped
The message in the pen's top-right corner says why. "Insert a slime jar" means the jar slot is empty. "Output full" means you need to empty the output grid.
Does the pen need food?
No. Food is optional: one item keeps the slime fed for 4 batches at twice the speed, and the pen keeps working without it. See Slime Pen › Food.
Where do I get Slime Crystal?
Mine Slime Crystal Ore in the Slimy Land's Slimy Stone with a stone pickaxe or better. Slime Shrine chests also hold a few.
Can I automate it?
Yes. Hoppers and pipes work with both machines. See Automation.
I lost my guide book
Craft a new one from a Book and a Slimeball. See Guide book & advancements.
Is this compatible with the old Productive Slimes?
No. This version is a rewrite. Worlds from the old mod won't carry slimes, machines or items over, and DNA, fluids, energy and cables are gone.