Team Fortress 2 is the sequel to the game that put class-based, multiplayer team warfare on the map. It delivers new gametypes, a signature art style powered by Valve's next generation animation technology, persistent player statistics, and more.
This game is fantastic. So much customisation, so much gameplay. And to think that it is free-to-play, wow. I have been playing this game for a year now and never thought about having issues with it (in terms of hacking and cheating) because it was so well made. Bravo Valve, you have really set a standard for gaming. 10/10