Legendary Survival Overhaul

Temperature becomes a tracked value. It changes with the biome, the time of day and nearby environmental factors, and players must watch it to avoid dying from cold or heat. Food also affects temperature: some items raise it and others lower it, and being too cold increases how much food the player eats. Thirst is integrated with the temperature system, and the mod reworks health with bonus hearts, broken hearts and shield hearts, along with a localized body damage system in which healing items carry secondary effects.

The mod adds a set of new blocks that manage body temperature, a calendar and thermometer for tracking seasons and exact temperatures, and armor coatings applied at a sewing table to stabilize warmth. Plants tied to temperature, such as ferns, sun ice and golden sun ice fern, can be found in biomes and crafted into a temperature immunity potion. Four new baubles, including Heat Resistance and Cold Resistance rings, integrate with Curios. The mod is compatible with Serene Seasons and Farmer's Delight, and most of its values can be adjusted in the configuration files.

Files target Forge and NeoForge for 1.20.1 and 1.21.1 and run on client and server, so both the server and every player need the mod. The code is not open source; the mod is released under All rights reserved, and public source links are available. The latest Forge file is 1.20.1-2.4.7 and the latest NeoForge file is 1.21.1-2.4.7.2, both dated 2026-08-09.