Crimson Nylium is a vibrant, fungus-covered variant of Netherrack found in Crimson Forests in the Nether.
Crimson Nylium naturally generates in Crimson Forest biomes and can be obtained using a pickaxe enchanted with Silk Touch. If mined without Silk Touch, it drops Netherrack instead. It can also be acquired from Endermen holding it or as loot from Bastion Remnant chests. Players can spread Crimson Nylium by applying bone meal to Netherrack adjacent to an existing Nylium block.
Crimson Nylium supports the growth of Crimson Fungi and mushrooms, regardless of light level. Using bone meal on it generates Crimson Forest vegetation. It decays into Netherrack when covered by opaque blocks but remains intact under lava or water. When placed under a note block, it produces a 'bass drum' sound.
