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.
Killzone: Shadow Fall - Killzone: Shadow Fall is offering thrilling gameplay, in which you, as the protagonist, need to complete a variety of challenging missions.
Arma - Experience true combat gameplay in a massive military sandbox.
PayDay 2 - PayDay 2 is an Amazing, Action-Adventure, Online, Co-op, FPS, Heist, Team-based, Single and Multiplayer video game developed by Overkill and published by 505 Games.
BioShock Infinite - BioShock Infinite is an Engaging, Action-Adventure, FPS (First-person Shooting), Fantasy, Exploration, and Single-player video game created by Irrational Games and published by 2k Games.
Warframe - Ninjas Play Free.