this game is very full of bugs that need to be fixed asap. for example in mummy mode if you attack with units from your last building before it dies, and they make it to another building and capture it, all is good, the game keeps going, BUT if they fail to capture that building the game doesn't realize that you have lost and continues sending waves of 0 mummy's (due to there being 0 targets) and this contributes to a never ending game. (eg. i'm currently on wave 76 of my mummy mode) untill this game has a few nasty bugs fixed, it has porven to be a waste of my time.