Great game. Downloaded the first episode for free on xbox during their holiday promotion, then bought the other episodes that were half off. finished episode 3 and gotta say this a nice (and welcome) change of pace to call of duty. the story and characters pull you in with a good mix of dialog and action. there are a few minor glitches like disappearing characters in a scene, timing of action, aiming, but nothing that you can learn or redo.
strongly recommend playing this (but not on your iphone from what I read other reviews).