Braid

Braid is another game that is on the Xbox live arcade that I've seen on gamespot.com's front page quite a bit, but never actually looked into. Turns out it's a puzzle/platform game with a guy named Tim trying to save a princess from a monster. Gamespot describes the story as a deep plot that makes you feel what the character you're playing as is feeling. Tim has lost his love because of a mistake he made and throughout the game you see Tim's thoughts on subjects that are eating away at him. The puzzles also emphasize clever thinking over quick reflexes, so it would probably be a fantastic puzzle game because you're encouraged to think more than act fast. It got overall great ratings ranging from 9-10 out of 10. A game that got that good of ratings from everyone seems worth looking into, even if it is more expensive than most arcade games at $15.