EndlessMine

Players who need large amounts of ore or stone can work in a dedicated dimension instead of carving pits and quarries near spawn. The portal sits one block from a 1~1 point and leads to a world with its own generation. A flat central biome is surrounded by rings of biomes that spread outward, and the order of the outer rings changes with the world seed, so each server gets a different layout while staying predictable for its owners. The starting zone can be controlled, and the surface height rises with depth, which gives vertical progression.

The dimension is free of buildings, caves, natural fluids and debris, so it is optimized for performance and stability. Player-placed fluids behave normally and core gameplay mechanics stay unchanged, and server administrators can adjust the setup to their needs. The mod is server-side only: players join without installing it. It is released under the MIT License, is not open source, and is published for Forge and NeoForge with files for 1.20.1 and 1.21.1, the latest being 1.0.11 for 1.20.1 and 1.21.1-01 for 1.21.1. It also supports Create train designs in versions 5 and 6.