Losing My Marbles!
Losing My Marbles! lets players build marble runs from track pieces, with each marble rolling and bouncing under physics simulation.
What it does
Players assemble their own marble runs from 11 track pieces, and the marbles travel through them on a full physics simulation powered by Jolt Physics, so they roll and bounce much as real marbles do. Thirty marble types are included, and the marble types are data-driven, so a datapack can define new ones.
The mod works on Fabric for Minecraft 1.21.8 only, and the latest Fabric file is 0.1.0+build.180-mc1.21.8-fabric, published 2025-08-26. Both the server and every player need it, and Fabric API must be installed alongside it. The code is open source under the MIT License.
Key features
Eleven track pieces
Eleven distinct track pieces let players design a run with their own layout and course.
Thirty marble types
Thirty different marble types are available, each one a separate item for the run.
Data-driven marble types
New marble types can be defined in a datapack, so custom marbles need no Java code.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Questions
Is Fabric API required for the marble runs?
Does the server need the mod installed?
In the catalog
Losing My Marbles! is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 17,695 mods support Minecraft 1.21.8.
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What the author says
Losing My Marbles is a mod that adds track pieces and marbles to Minecraft so you can build your very own marble run. Each marble has full physics simulation, powered by Jolt Physics. They roll and bounce around like real ones!
Official listing
- Modrinth page
- modrinth.com/mod/losing-my-marbles
- Owner
- devOS Nautical
- Published
- 2025-08-18
- Updated on Modrinth
- 2025-08-26
- Facts verified
- 2026-10-15