Warped Nylium is a vibrant, fungus-covered variant of Netherrack found in Warped Forests in the Nether.

Warped Nylium naturally generates in Warped 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. Players can spread Warped Nylium by applying bone meal to Netherrack adjacent to an existing Nylium block.

Warped Nylium supports the growth of Warped Fungi and mushrooms, regardless of light level. Using bone meal on it generates Warped 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.