Incendium completely overhauls the Nether using only vanilla blocks. It raises Nether generation height to 192 and adds 8 new biomes, 9 structures such as the Nether Reactor, Sanctum and Forbidden Castle, custom mobs, items and advancements, plus jagged mountains and twisting caves.
The mod is fully server-side, so players can join with a vanilla client. Builds for Forge, Fabric, Quilt and NeoForge cover Minecraft 1.18.2 - 26.3; it is not compatible with Amplified Nether.
Want a new Nether without making players install mods? Turn on Incendium for your Minecraft hosting in one click from the panel.