If you ever wanted a simple easy to play game from XBLA that you could play over and over, then look no further.
Your main Character is Tim who (like another 2D/3D hero we know) is trying to save the princess. The Game Consists of 5 main worlds with about 6-8 levels each. The levels are extremely short so if you like getting achievements you can get half of them right off the bat by quickly running through them all in about 10 - 15 minutes. Your goal is not to go from one level to another however, your main goal is to collect the puzzle peices cleverly placed throughout all the levels.
Braid is amazing game that anyone could find time to enjoy. It could take you 100+ hours to figure it all out but you'd still have an amazing experience doing it.
The story is very deep and there is amazing twist that is foreshadowed throughout the entire game and if you're lucky you just might figure it out.
My recommendation now that I've completed the main part of the game is to not look up any guides or walkthroughs. Just do the games yourself and it'll be much more fun that way.
I gave this game a 9/10 because I don't like one of the locations of the stars because it's one you can't get once you're past a certain part of the game. Also the sound of the music sometimes annoyed me when I was rewinding time. Great game and for 1200ms it is quite worth it.