Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Prototype - Prototype JavaScript framework
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Thief - Thief is a free chess client written by Zon Jan to play on chess servers like the Free Internet...
Quake - Quake is a series of first-person shooter video games released by id Software.
Deus Ex: Mankind Divided - Deus Ex: Mankind Divided is an Action-Adventure, RPG, Sci-Fi, Stealth, FPS, Open-world, and Single-player video game developed by Eidos Montreal and published by Square Enix.