Summary: Got the game no problem. I also owned this game before so I know the play style. It is used with steam client engine.. had no issues with product key as well and the game is a good game it just takes a lot of team work to play each round on good servers. I would recommend this game to people who love shooters.
Summary: The game itself is great. Steam code worked perfectly and smoothly downloaded and updated. The game is really only good for multiplayer, so don't plan on playing single player that much. The main reason why I have it at four stars is because although the game is great and deserves five stars, there is this "glitch" or something of the sort in which NO servers are displayed in any of the multiplayer tabs.
Amazing, I've played this game before and I've never ...
kameron walls, Amazon
5 July 2014
Summary: Amazing, I've played this game before and I've never felt this much more secure and safe because of STEAM anti cheat. Steam really helps me because I can see who I'm playing a game with. Overall , I love this game. Note Killing Floor 2 is coming out now. I will continue the fight.