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!
Losing My Marbles currently features 11 unique track pieces and 30 different marble types. If you get bored of the marbles, don't worry! Marble types are fully datadriven, and you can make your own with a datapack.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.8
- 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 — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as losing_my_marbles-0.1.0+build.180-mc1.21.8-fabric.jar — drop this file into the mods folder
- Download size: 7.7 MB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.