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: This game is alot of fun, I love the 'skill tree' aspect, the wide array of guns, and the maps. the HUD is nicely done and no cross hairs make the game even more realistic. over all this game is great..... for single player. After spending a long time trying to find a sever, downloading the maps, and trying not to get disconnected, me and my friend gave up on multiplayer.