For a step-by-step walkthrough on how to properly set up the official version, check out this guide:
: Cracks and unofficial installers are common vectors for malware that can compromise your personal data or system performance.
: Garry's Mod receives frequent technical updates. Pirated versions stay on older, buggier builds. How to Get Garry's Mod Safely
The only authorized way to download the full, safe version of the game is through .