It was a surprise for me since it passed completely under my radar until four days from release. I bought it on a whim since it looked interesting and the story just promptly blew my mind. Sleeper hit of the decade imo.
My spell check just had a mental breakdown... http://i.minus.com/ibhGOcxiSygOh.gif
I actually avoided getting the Asian import when it was first released for some reason, I guess I didn't know enough about the game and I was skeptical that it could be any fun. But I got the NA edition when it came out and it is easily my favourite new IP this gen.