Fever & Frost

Fever & Frost is a Forge survival mod built around temperature, disease, hydration, fatigue, shelter, and medical progression. It turns the world into something you have to prepare for: deserts overheat you, cold biomes freeze you, storms matter, and survival gear becomes part of your route through the game.

Features

• Body temperature system with biome, time of day, weather, altitude, seasons, humidity, shelter, heat sources, and cold sources.
• HUD thermometer with extra survival bars for hydration, fatigue, and shelter comfort.
• Heat waves, cold snaps, blizzards, dust storms, wet clothes, frostbite, heatstroke, and hot-water scalding.
• Diseases: cold, fever, plague, tetanus, and parasites.
• Incubation, severity, immunity, symptoms, sounds, screen effects, and recovery.
• Hydration and fatigue systems for the 4.0.0 survival overhaul.
• Shelter comfort scoring based on roofs and nearby walls.
• Thermal bottles: empty, cold, warm, hot, dirty, and purified water.
• Water heater block with custom GUI.
• Medical station block with custom GUI.
• Medicines: herbal tea, antipyretic, antibiotics, activated charcoal, antiseptic, tonic, injections, splint, and painkiller.
• Warm clothing and cool clothing armor sets with custom worn textures.
• Equipment: thermometer, advanced thermometer, heat stone, cold stone, portable heater, portable cooler, insulated pack, and heat briquette fuel.
• Guidebook, commands, custom death messages, custom advancements, generated recipes, and JEI compatibility.

Commands

• /temperature check
• /temperature set <value>
• /checktemp
• /cure
• /survival check
• /survival hydration <value>
• /survival fatigue <value>

Compatibility

• Minecraft: 1.21.1
• Mod loader: Forge
• Developed on Forge: 1.21.1-52.1.14
• Java: 21
• JEI: optional, 19.25.1+

Recommended

JEI is optional but recommended so players can inspect water heater recipes and all generated crafting recipes in-game.