ModsFinder

One Heart!

by Titan1um

One Heart! is a game mechanics mod that reduces the player to a single heart, with the rest of the health bar removed by a datapack setup.

FabricForgeNeoForgeQuiltServer required, client optionalMIT LicenseOpen source1.18.2 – 26.1.1

What it does

Setting one heart removes the other nine hearts from the health bar, so a player starts with a single heart of health. The change is applied through a datapack, which is bundled with the mod for Fabric, Forge, NeoForge and Quilt, and also offered for Paper, Spigot, Bukkit, Purpur and as a plain data pack. Files are published for game versions 1.18.2 – 26.1.1, with v1.1+mod for 26.1.1 as the latest release.

Key features

  1. Single-heart health

    The health bar is cut to one heart, leaving the player fragile from the start of a world.

  2. Datapack delivery

    The effect is provided as a datapack that can be dropped into a world folder without a separate mod install.

  3. Server-side operation

    The server must run the mod, while clients may leave it out and still join the world.

Compatibility

Latest build for each game version and loader.

26.x2 of 2 versions with builds
26.1.1v1.1+modv1.1+modv1.1+modv1.1+mod
26.1v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.x12 of 12 versions with builds
1.21.11v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.10v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.9v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.8v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.7v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.6v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.5v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.4v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.3v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.2v1.1+modv1.1+modv1.1+modv1.1+mod
1.21.1v1.1+modv1.1+modv1.1+modv1.1+mod
1.21v1.1+modv1.1+modv1.1+modv1.1+mod
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x1 of 1 version with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Half-Heart Hardcore is open source under the MIT License and runs server-side only on Fabric, Quilt and Legacy Fabric for 1.0 – 1.21.4. Glass Heart is server-side only on Forge and NeoForge for 1.20.1 – 1.21.1 and is not open source.

ModLoadersGame versionsEnvironmentUpdated
One Heart!Fabric, Forge, NeoForge and Quilt1.18.2 – 26.1.1Server required, client optional2026-04-05
Half-Heart HardcoreFabric, Quilt and Legacy Fabric1.0 – 1.21.4Server-side only2024-12-07
Glass HeartForge and NeoForge1.20.1 – 1.21.1Server-side only2025-05-31

Questions

Does One Heart! need to be installed on the server?

Yes. The server must run it, while players may leave it out.

Can the datapack be used without the mod?

Yes. The effect is provided as a datapack, so it can be copied into a world folder or added through a server platform such as Paper or Spigot.

In the catalog

One Heart! is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 11,522 mods support Minecraft 26.1.1.

Game mechanics mods29,952Fabric modsMods for 26.1.111,522

More from Titan1um

All projects
More Ancient Debris (20x)1.18.2 – 26.1.1More Ancient Debris (5x)1.18.2 – 26.1.1More Ancient Debris (10x)1.18.2 – 26.1.1More Ancient Debris (3x)1.18.2 – 26.1.1More Ancient Debris!1.18.2 – 26.1.1Nuggets API1.20.1

Similar mods

Better Third Person1.16.4 – 1.21.8Sounds1.20 – 26.3Cut Through1.18.2 – 26.3Bad Wither No Cookie - Reloaded1.12.2 – 1.21.10Carpet1.14.4 – 26.3Client Tweaks1.12.2 – 26.3

What the author says

This datapack sets you to one heart! You're as brittle as glass!! ⚠️It is recommended to add the datapack by clicking on "Open Pack Folder" and then pasting the datapack inside that folder! Putting it in the
Titan1um, on the Modrinth page

Official listing

Owner
Titan1um
Published
2026-03-31
Updated on Modrinth
2026-04-05
Facts verified
2026-10-15

Tags

Game mechanics
Open on ModrinthCompare