Braid is the highest-rated XBLA game ever. (Also, sales data).

"Braid is the highest-rated Xbox Live Arcade game of all time (out of about 150 games!) Geometry Wars 2, released a week prior, is the second-highest. There are some strong games coming up in the next few weeks, so we'll see if these positions hold.

But 92 is not just a good score for a Live Arcade game; it's a good score for any game. In fact, Braid is currently the 10th highest-rated Xbox 360 game of all time - including all AAA high-budget games..."