Team Fortress also known as TF is a FPS game (First Person Shooter) developed by Valve and released April 7th, 1999. This game was originally released for Windows. The game itself conatains a number of teams and 9 different classes from you to choose from.
The game like any other fps game, consists to kill people, but tf does not really have a free for all. You have different choices of game modes like Capture the Flag or Control Point.