Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.

Dying Light - Dying Light is an Action-Adventure, First-person Perspective, Horror-Survival, Zombie, Co-op, Role-playing, Single and Multiplayer video game created by Techland and published by Warner Bros.

Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.

Left 4 Dead - Left 4 Dead is an Engaging, Action-Adventure, Horror-Survival, FPS (First-person Shooter), Co-op, Single and Multiplayer video game created and published by Valve.

Quake - Quake is a series of first-person shooter video games released by id Software.

DEAD TRIGGER - The world has collapsed.