Arma - Experience true combat gameplay in a massive military sandbox.

Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.

Rust Game - Rust’s world is harsh. The environment is not kind. Bears and wolves will chase and kill you. Falling from a height will kill you. Being exposed to radiation for an extended period will kill you. Starving will kill you. Being cold will kill you.

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

Infestation: The New Z - Infestation: The New Z is a Free to play, Massively Multiplayer Online Role-playing, Third-person Shooter Horror, Survival, and Open-World video game developed by Fredaikis AB and published by OP Production LLC.

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