IceMutation

The mod reshapes existing terrain so that ice mutations replace much of the landscape. Biomes change completely, which makes finding a suitable place to settle a matter of luck and extra effort. Fifteen new monsters are added, and some of them can fly, climb or move through solid blocks, so hiding places at night require caution. Players who use it alongside biome-changing mods should expect possible conflicts, since the mod can break when combined with them.

Two new wood types and a set of new tools join the game. Blocks change appearance in the mutated areas, and snow particles can be turned off for players who find them distracting. Item names are in English. Building a house in the middle of an ocean or lake is discouraged by the terrain, and the mod suggests recipe viewers as a useful addition for players who want to keep track of new crafts.

The mod runs on the client and on the server, so the server and every player need it. It is published for Forge only, for Minecraft 1.20.1, with the 130.0.0 file as the latest release from 2025-09-20. The mod is released under All rights reserved and is not open source. The author reports that an update after 46.0.0 fixed a spawn system problem, and that errors in some spawning creatures were corrected in later updates.