Doom - Doom is a science fiction horror-themed first-person shooter video game in which players assume the...
Half-Life 2 - Half-Life 2 is a science fiction first-person shooter video game developed and published by Valve...
GZDoom - ZDoom is a family of enhanced ports of the Doom engine for running on modern operating systems.
Arma - Experience true combat gameplay in a massive military sandbox.
Freedoom - Freedoom is a WIP a complete free content game based on the Doom engine.
Quake - Quake is a series of first-person shooter video games released by id Software.