Up and running in four steps

Setup steps

1. 1

   Install Fabric Loader

   Download and run the Fabric installer, choosing the same Minecraft version you plan to play (1.21.11, 1.21.4 or 1.21). This creates a new Fabric profile in the launcher.

2. 2

   Install Meteor Client

   Get the Meteor Client jar for that same Minecraft version and place it in your mods folder. Meteor Rejects is an addon — it will not load without the base client.

3. 3

   Add the Meteor Rejects jar

   Download the addon jar for your Minecraft version and drop it into the same mods folder. The versions of Minecraft, Meteor Client and the addon must all match.

4. 4

   Launch and open the GUI

   Start Minecraft using the Fabric profile. Press the Meteor Client GUI key (Right Shift by default) — the extra modules and commands appear alongside the built-in ones.