agudon2k1's Stars
GarageGames/Torque2D
MIT Licensed Open Source version of Torque 2D game engine from GarageGames
OpenRA/OpenRA
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
ValveSoftware/Source-1-Games
Source 1 based games such as TF2 and Counter-Strike: Source
ValveSoftware/steam-for-linux
Issue tracking for the Steam for Linux beta client
ValveSoftware/halflife
Half-Life 1 engine based games
ValveSoftware/steam-runtime
A runtime environment for Steam applications
ValveSoftware/source-sdk-2013
The 2013 edition of the Source SDK