Team Fortress 2 - Team Fortress 2 (TF2) is the sequel to the game that put class-based, multiplayer team warfare on...
Overwatch - Stylized team-based FPS
Warframe - Ninjas Play Free.
Urban Terror - Urban Terror started as a realism based "total conversion" mod for Quake III Arena.
Paladins - Paladins: Champions of the Realm is the new Free-to-Play objective-based team first-person shooter from Hi-Rez Studios, makers of SMITE and Tribes: Ascend. Paladins ForumsThe official forums for upcoming First-Person Shooter, Paladins.
AssaultCube - AssaultCube is a FREE multiplayer first-person shooter game. Taking place in realistic environments, with fast, arcade gameplay, it's addictive and fun!