It presents you with a challenge (the control scheme), then forces you to master it while playing through a series of increasingly-difficult levels. To me, that sounds like what a game should be, so I don't see what everyone's complaining about. The control system is new and tough to learn, but that's the point. Personally, I really liked it (enough that I played through on Easy and Hard). There was one bug though: if you beat level 19 and return to the menu, it gives you the "You won the game!" pop-up. Overall though, great game.