TUISHIMI The game itself is fun, but it has the ability to freeze my entire mac, forcing me to reboot. This is reproducible on my computer by simply failing a level and having the "Try again" screen pop up. At this point if I am in full screen mode I am SOL. If I am playing in window mode, I can use the keyboard to switch to Finder, start Process Monitor and kill it.
(Version 1.5)