I haven't got the game but I tried it, from the beginning to a little after the dragon boss. Great looking game, it has also some original gameplay features, but as far as I played it has no challange at all, not only you can't lose but also findig secret objects was as easy and obvious as game can get, and imo no challange=no fun in games.
-So far I'm not temped to buy the game, also I don't get all the praise it got already, imo run downed games like Other M and Wii Party annihilate this any second,. However, maybe it will get better, going on further, I'll try it again when I have the occasion.