Okay, so this may not be the best spot to post this, so feel free to change it if I'm in the wrong. :)
Anyhoo, I'd like to get a game for my brother. He's a big fan of Halo, and he's played them all. He's also played the Gears of War games, the Call of Duty games and the Orange Box. Any ideas on what I could get him? He likes FPS's and puzzles.
It'd be great to have a list of games that he already has and if you will be playing it with him. However I'd recommend Portal 2, Left 4 Dead 2, Bulletstorm or a Crossbow combined with a "500 Furiously Frustrating Crosswords"
I do not recommend that anyone purchases the first left 4 dead. Cold Stream DLC for Left 4 Dead 2 is just around the corner (probably the end of May/Start of June) and not only is the playerbase of Left 4 Dead dwindling to the point of almost non existence, Cold Stream comes with all of the original Left 4 Dead Maps.