No problems with game play. I actually enjoy having to sometimes figure out the point of the puzzles, with no instructions and few clues.
Problem is, the game won't quit gracefully. It seems to struggle with such a simple command. Sometimes it goes black screen and then logs me out of my computer and when I log back in, the app hasn't quit. Once, It just froze and I had to force reboot. How in hell is this thing logging me out?! Why doesn't it just quit on command?