Press Win + R , type %appdata%\.minecraft\mods , and hit Enter.
Always use trusted platforms to ensure your .jar files are safe and up to date. You can find the official releases on: Download Code Chicken Lib jar
Drop the downloaded CodeChickenLib-xxx.jar into this folder. Press Win + R , type %appdata%\
If you're using an older version like 1.7.10 , you might need to place the jar in a specific subfolder like /mods/1.7.10/ depending on your version of CodeChickenCore. If you're using an older version like 1
Start your game using the correct Forge profile. Why do I need this?
CodeChicken Lib isn't a mod you "play" with features you can see; it's a "backend" mod. It provides the code necessary for other mods to: Render complex 3D models. Manage custom configurations and colors. Handle data packets between your computer and a server.