I got this early last week, and I must say I love it. THe story is interesting (but not the main point of the game, as expected). The trademark humor is back...and so funny. I love it. The fliip ability is just so cool - it allows for some amazing dynamics. Things just pop out of nowhere in 3d, and the way puzzles work...are ingenious. The 2d world looks so lively and colorful and alive...the 3d world is a bit bland comparatively, but not bad. The music is good, as well. The problems arise in the difficulty. It's SO easy. Fans of the Mario Bros. series/Super Mario World will find this too easy - and it lacks many of the previous entries' RPG elements.
I love it, though. I suggest people get it.