1 HP
Start the true Hardcore experience with 1HP.
Screenshots
About this Mod
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
Available Versions
How to Install 1 HP on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.8).
Install Mod
Open the mod browser in the dashboard and search for "1 HP". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.8, 1.21.7, 1.21.6 (+13 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
1 HP server crashes on startup – what to do?
Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.
Is 1 HP compatible with datapack and fabric and forge and neoforge and quilt?
1 HP officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.8, 1.21.7, 1.21.6. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with 1 HP – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if 1 HP consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Similar Mods
Rent Modded Server
Install 1 HP with just one click on your server.