Game of the year 2011
The story-line is awsome, not to mention this game is very funny. I recommend this game to every gamer, who like to play, think and have a lot of fun. I advice to players not to use internet for walktroughs, I completed this game all by myself, of course there were some places where I was stuck.
The multiplayer is nice too. I played it on split-screen mode, and it's fun too.
"Valve" created a masterpiece. Ending of this game is nice.
Well this game doesn't have difficulty settings, so when you complete it once there is no more point of playing, unless multiplayer or for achievments.