More people play CoD now so you should get that. Halo 3 is not as popular any more because i don't hear the nerds in my class talking about it as much, it really annoys me when they dont shut up :P
a fast-paced(non-turnbased) platformer rpg that switches from 2D to 3D in the push of a button. Great for fighting games, puzzles, and classic platforming.
well u could get cod 5 because how many people play live you would always sombody to play. or you could get halo3 wich is fun and alot of people play that too