I was really, really enjoying playing Batman Arkham City...that is until I booted it up from STEAM one day to find my 35+ hour game save file had disappeared. Vanished. Well, it exists but is now corrupted due to a bug in the game. If you are playing Arkham City on the PC, YOUR game has this flaw. Go to STEAM or the official Arkham City forum to find out more. The sad thing is that Warner Brothers Entertainment was notified of the problem BEFORE I purchased the game. So, I have been playing with a broken game for 2 months with no warning. If they had let me know that there was a small chance for my game to become unplayable, I would not have purchased the game. Anyone else having this problem?