Call of duty 4 is a great game for any of those who want a great fist person shooter. With an excellent singler player and great multiplayer it overall is a great game.
The only flaws in this game is that the singler player is short and also it is really only for those who want a game that is difficult to beat. I still have dents in my controller from throwing it across the room when I die again for the 20th time in the same checkpoint.
Over a great just be prepared to play with a dented controllor