guides

Installing a client

All three clients — Krypton, Radium, and 67 Client — run the same way: Fabric, Minecraft 1.21.11. Follow these five steps and you're in.

01

Install Fabric Loader + Fabric API

Every client here runs on Fabric for Minecraft 1.21.11. Install the Fabric Loader from fabricmc.net, then drop the matching Fabric API jar into your mods folder. Without Fabric API the mods will not load.

02

Download the mod

Pick your client on the Clients page and hit download. The file will save as a .jar.

03

Open .minecraft/mods

Windows: %appdata%/.minecraft/mods  ·  macOS: ~/Library/Application Support/minecraft/mods  ·  Linux: ~/.minecraft/mods (create the folder if it doesn't exist).

04

Drop the .jar in mods/

Place the downloaded client jar directly into the mods folder alongside Fabric API. Do not rename it.

05

Launch Fabric 1.21.11

In your launcher, select the Fabric Loader 1.21.11 profile and hit Play. The mod will load automatically.

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Other guides

Quick answers for what usually comes up after the first install.

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Will I get banned?

Depends what the client does and where you play it — covered on the FAQ page.

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Keeping a client updated

Swap the jar for the newest build the same way you installed it — full details in the FAQ.