Today Amazon has Batman Arkham Asylum up for a cheap $14.99. If you haven’t already played this game yet, I highly recommend it as it is very good. I’ve played all the way through the game and I’ll confirm that it is by far the best Batman game every created. Amazon has both the PS3 and 360 versions up for sale and they are both the Platinum Hits and Greatest Hits versions which include some extra content. You can grab either of the versions here: Batman Arkham Asylum.