Quake Live - Quake Live is a Fantastic, Action-Adventure, FPS (First-person Shooter), Survival, Single and Multiplayer video game developed by Id Software and published by Bethesda Software.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Insurgency - Take to the streets for intense close quarters combat, where a team's survival depends upon securing crucial strongholds and destroying enemy supply in this multiplayer and cooperative Source Engine based experience.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Sword With Sauce: Alpha - Sword With Sauce: Alpha is an Action-Adventure, Fast-paced, First-person Shooter, Single and Multiplayer video game by Diatomic Games.
Rage - Rage Software, also Rage Games and FX Digital Network, was a British video game developer.