i really love the ost for deus ex human revolution!!! also assassins creed 3/4. the theme song of uncharted in all of its versions is beautiful. and of course acnl, especially the night tunes in the snow version haha
I think I've answered this before in a similar thread, and I may have given a different answer then lol. But here are some of my favourites.
Abz?. Holy crap, the music made me actually shed tears while playing. Beyond words.
Kingdom Hearts, of course.
Final Fantasy XIII. I don't caaaaare what y'all say, I love the game and the soundtrack