1HP
This datapack gives you the ability to play with only Half a Heart, which makes survival extremely challenging. It’s designed for players who want to push their limits and experience Minecraft in a whole new way.
How to Install
- Download the
1HPdatapack.zipfile or folder. - Place it inside your world’s
datapacks/folder:.minecraft/saves/<Your_World>/datapacks/ - Launch the world.
- Your health will instantly be reduced to 1 HP (0.5 hearts)!
Features
- Sets player max health to 1 (half a heart).
- Affects the current player only.
- Not yet compatible with multiplayer.
- Lightweight and efficient.
Challenge Ideas
You can make survival even harder by combining this datapack with:
- Hardcore mode
- No armor rules
- Timed survival goals (e.g. survive 1 hour)
- Mob difficulty increase datapacks
Compatibility
- Minecraft version: 1.21.5
- Singleplayer only (multiplayer support planned for future versions)
- Compatible with most datapacks unless they directly change player health
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.5
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as 1HP-1.21.5.zip
- Download size: 121 KB
- Download link checked 29 Aug 2026 — working
These come from our own check of the pack file, not from the source page.