Shatter was one of my favorite soundtracks this gen. The game itself was a decent Arkanoid-style game with a few gimmicks here and there, but the soundtrack by Module is what really stands out:
Mirror's Edge was one of the only western "AAA" soundtracks I liked (I don't particularly care for those bog-standard symphonic movie-soundtrack-wannabes that the typical non-indie western game loves so much). Doesn't hurt that it was by awesome ambient/psytrance producer Solar Fields.
Lumines: Electronic Symphony has one of the best licensed soundtracks ever.
For others mentioned in this thread already, Hotline Miami, Nier and Xenoblade.
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Project Diva F

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