While Garry's Mod 13 is the definitive version of the legendary sandbox game, specific "downloads" labeled as "V163" or similar are often unofficial or pirated versions. These often lack the core features that make GMod great.
If you are writing a post to share or discuss this version, here is a solid template you can use: Download Garry--39-s Mod 13 V163
Multiplayer Fun: Join servers for Prop Hunt, Trouble in Terrorist Town (TTT), or DarkRP. 💻 System Requirements While Garry's Mod 13 is the definitive version
Searching for Garry's Mod 13 V163 often leads to unofficial or pirated "repack" versions of the game, as Garry's Mod 13 is the current retail version available on Trouble in Terrorist Town (TTT)