Tough As Nails
A mod that adds thirst and body temperature systems to enhance survival realism.
📦 Modpacks With This Mod
DeceasedCraft - Urban Zombie Apocalypse
A zombie apocalypse modpack set in a ruined urban world. Scavenge, survive, fight with firearms, and hold out against endless waves of the undead.
🎯 Best for Best for players who enjoy a heavy modern-apocalypse system layer (temperature, thirst, vehicles).
RLCraft
A hardcore modpack that transforms Minecraft into an extreme survival experience. Features thirst, body temperature, and a leveling system for realistic survival gameplay.
🎯 Best for A fit for players who embrace die-and-learn hardcore survival with deep build crafting.
📖 Introduction
Tough As Nails adds two new survival gauges to Minecraft — **Thirst** and **Body Temperature**.
**Thirst system**: when the thirst bar drops, you get the Dehydration debuff (slower regen), and at very low values you take direct damage. Drinking dirty river or lake water gives you the 'Thirst' effect (faster thirst loss + a chance of food poisoning), so the safe path is purified water — boiled in a furnace or collected as rainwater.
**Temperature system**: your body temperature is shown on a 0 (freezing) to 10 (scorching) scale. Too cold gives you frostbite, too hot gives you heatstroke. Temperature changes in real time based on **biome, time of day, armor worn, nearby heat sources (torches, lava, furnaces), and drinks consumed**. Crossing a desert means light cloth gear; venturing into snow biomes means wool armor and warm soup. Travel itself becomes an act that requires preparation.
🕒 When to Use This Mod
Pick it up when vanilla survival feels too safe, or when you want deserts and snowfields to actually mean something instead of just being a different palette. It only really lands at the start of a fresh world — patching it onto an established save just adds chores. And honestly, if managing thirst and temperature doesn't sound interesting to you, this one will feel like nagging the entire run.
📦 Where It Matters Most
In RLCraft it's a major reason 'died of thirst' joins the first-night cause-of-death list. In apocalypse packs like DeceasedCraft, clean water becomes a real resource — building a purifier or rigging up rainwater catchers turns into an actual progression goal, and the entire pack gains a layer of survival weight that vanilla hunger management could never produce on its own.
🎮 How It Changes Your Playthrough
It's not just 'harder' — it's a game where you have to look after your body. Topping off water bottles before crossing a desert, swapping into wool armor before heading to a snow biome, those tiny preparation rituals stack up across every session. The first few hours feel like an annoyance, but once it clicks, having the environment itself act as an enemy is genuinely immersive.
💡 Gameplay Tips
- **The fastest purification method is the furnace.** Put a Dirty Water Bottle in the *input slot* (not fuel) and smelt it — out comes a Purified Water Bottle. Dedicating a single furnace to water early on basically removes thirst as a worry.
- **Build a Rain Collector early** — it auto-fills with clean water every time it rains, skipping the purification step entirely.
- **Yellow temperature gauge = warning, red = immediate danger.** At red, you have about 30 seconds to change environment before damage starts stacking.
- **Hot biome prep**: Cooling Coil curio, Lemonade, Cold Tea, light Cloth armor. Carry 4–6 cold drinks before entering a desert or the Nether — it's the difference between exploring and dying.
- **Cold biome prep**: Wool armor is the baseline, and Hot Cocoa, Coffee, or Warm Soup raise body temperature fast. Plant torches around as you explore snow biomes — they double as quick warm-up spots.
- **Charcoal Filter / Filter**: a portable purification tool that replaces the furnace step. Some modpacks add extra items — search 'Filter' in JEI to see what's available in your pack.
- **Canteen**: a curio that holds multiple drinks worth of water. Far more inventory-efficient than carrying four bottles on long expeditions.
⚠️ Common Confusing Points
- • **Drinking dirty water directly** is the single most common mistake. Right-clicking on a river with an empty bottle fills it with dirty water — drink it and you get food poisoning + accelerated thirst. Always purify first.
- • **Temperature system not showing up?** Some modpacks disable temperature by default. Check F3 debug for 'Body Temperature' or verify `enableTemperature = true` in `config/toughasnails-server.toml`.
- • **Thirst and hunger are separate gauges.** Eating doesn't restore thirst — some foods (watermelon, apples) give a tiny amount, but they can't replace actually drinking water.
- • **Day/night temperature swings are larger than you'd expect.** A desert that's bearable at noon can give you frostbite at night. Pack night-appropriate gear when camping in deserts or plains.