Garry's Mod 13 Xash (gmod on goldsrc for android) for Half-Life - ModDB

GoldSource models pack [Garry's Mod] [Mods]

Garry's Mod, GMod

GMod - Garry's Mod APK 0.20.1 - Download Free for Android

What is the most impressive mod for a video game? - Quora

Go-Mod 3.4 - SinglePlayer - Modifications - Goldsrc Warehouse (HL1) - Garry's Mod на движке GoldSRC

What are the benefits and drawbacks of modding video games, and how does it impact the gaming community and industry as a whole? - Quora

Garry's Mod GoldSrc edition! - LambdaGeneration

Custom Maps and Mods for Garry's Mod

GMod - Garry's Mod APK 0.20.1 - Download Free for Android

Garry's Mod 13 Xash (gmod on goldsrc for android) for Half-Life - ModDB