Pixelmon: No More Ultra Space

Ultra Beasts normally live in a separate Ultra Space dimension reached through wormholes. This sidemod deletes that dimension and places the Ultra Beasts across the overworld instead, so players meet them on ordinary terrain without traveling. Each Beast is matched to a biome: Buzzwole and Poipole in jungles, Pheromosa, Guzzlord and Stakataka in deserts, Xurkitree on plains, Celesteela in badlands, Kartana and Blacephalon in forests, and Nihilego in dark forests and swamps. The ten Beasts are spawned rarer than normal wild Pokémon, so finding one still feels like an event.

Ultra Beast loot, including Beast Chests, horde battles and the ultra-themed terrain blocks, moves to the overworld with the creatures. Ultra Space's own forage, headbutt and loot tables are replaced by overworld versions, and Naganadel stays evolution-only. The mod requires Pixelmon and is client and server, so the server and every player need it. It is published for NeoForge 1.21.1 under the Apache License 2.0 and is open source; the source code and issue tracker are public.