Lightroot

Infernal Caverns generate inside the Nether as a quieter area than the rest of the dimension. Hanging vines reach down from the ceiling in large patches, and flowers that emit light grow among them. Large fossils are scattered through the cavern, similar to those found in Soul Sand Valleys, and the caverns hold a new crystal called Infernoprase, which is found only in this biome though it can also be crafted.

Two peaceful mobs roam the caverns. Infernal Sheep drop a wool sunhat that replaces regular wool in crafting, with the same light-emitting and flame-resistant properties. Extant can be ridden but cannot be steered, and it drops an Infernoprase block when it dies. Players who collect Infernoprase can craft new functional items, including the Infernoprase Light, which works like a flashlight, and a Fireball that causes large fiery explosions when thrown.

New building blocks are made from Lightroot stone and crafted Infernoprase blocks, and the mod includes glass and other block variants built from them. Lightroot is a Forge mod for 1.20.1, and the 1.2.0 file was released on 2025-08-20. Every player and the server need a copy of the mod. It is released under All rights reserved, so the code is not open source. Glowroots Two Electric Boogaloo covers a similar glowing theme.