Worlium

A density function named worlium:worley draws on seeded three-dimensional Worley cellular noise, read at its F1 and F3-edge values, and bends that signal with a two-dimensional Perlin field, so the carved tunnels stretch out and wind back on themselves rather than appearing as separate pockets. Depth scales the warp amplitude, so caves grow more chaotic closer to bedrock, and the carver eases back toward solid stone near the surface. Custom aquifer logic keeps caves from flooding with water, and large lava lakes appear near bedrock between y=-63 and y=-56.

Because the carver replaces vanilla cave generation and disables the stock carvers, vanilla worldgen runs with less work per chunk. Worlium also raises diamond rarity, removes the diorite, andesite and granite blobs, and keeps carvers from ending abruptly at oceans, rivers and other aquatic biomes with flat stone. The mod is server-side only, so players join without installing it. Fabric API and Lithostitched must both be present for it to work, and the Fabric and NeoForge builds draw their shared carver logic from one common module. Files exist for 1.21.11, 26.1, 26.1.1 and 26.1.2, with 2.5 for 26.1.2 as the latest build, published on 2026-05-25.