Day of Defeat: Source
This game is really good. Keep in mind that it is a HARDCORE fps, this is not ridiculously easy like CoD is. If you like Counter Strike you will love this game.
the graphics where bad
alot of lag, and the graphics where bad, and you dont know who is on your team , and you can kill your team mates if you dont now , you would have to stop and put your site on the person to see if they are on your side , then you can go . The overall for that game is very bad, but see for yourself .