Mods for 1.21.6

This mod works essentially the same way as the vanilla /place command but for custom terrain (i.e. WorldPainter-generated worlds).

BuildBattleby ErrorTime

Generates build-battle arenas with random biomes and terrain

Block Contagionby BeanInBag

Block Contagion turns any block you craft, find, or place into a creeping viral infection that spreads across the terrain until its source is broken!