We love the game, but some of the levels are indeed frustratingly difficult. In fact I really doubt we'll ever finish the game because of some of the most difficult levels, but I still think it's a great game. There's lots of really fun levels to play and like Super Mario 64 you can jump around to different worlds, which alleviates some of the pain of the most difficult levels. If you're hopelessly stuck on one level, just switch to some other world and work on those for a while and then come back. I actually played Sunshine before ever playing Super Mario 64 and have played much more of Sunshine than I have 64. At the moment both games are on hold for us as we play other stuff, but I certainly intend to get back to them.