Swamp
Overworld (temperate)
Shallow water, lily pads and oak trees draped in vines. With mangrove swamps, the only place where slimes spawn above ground, and the only biome with witch huts.

Resources
- Slimeballs from surface slimes (spawn rates peak at full moon)
- Witch huts (cat and witch spawns, crafting table + cauldron)
- Blue orchids, lily pads, vines and clay disks
- Mangrove swamp variant: mangrove wood, mud and frogs
Mobs
- Slimes at night (Y 50-70, moon-dependent)
- Witches in huts; bogged (poison-arrow skeletons) in swamps and mangroves (1.21)
- Frogs and tadpoles (mangrove variant)
Structures
- Witch huts
- Fossils generate underground
- Abandoned camps sometimes generate here (Java 26.3)
Why go
- Surface slimeballs without digging to Y=40 - wait for full moon nights
- Frogs for froglights (feed them small magma cubes)
- Mud and mangrove wood palettes from the mangrove variant
Tips
- Slime rates are zero at new moon - check the moon before an AFK session.
- Witch huts make compact witch farms (redstone, glowstone, gunpowder) with a small spawn volume.