I agree with everyone else, This is better than Tyrant and Kongai. This has a simple system and doesn't try to overload you with storyline. Clean and easy to jump into.
A lot of people are criticize this game for being to hard but I think that's what keeps you coming back, if you can't beat a level but know that if you take some time you can eventually do it then the game is succeeding in making you play it.
I CAN'T GET OUT OF 40,000 FEET!!! I've been going for about 20 minutes.....this is just getting annoying...1200 dollars...oh god. i'm just going sideways....over and over...this may be awhile.