Impressions based on < 1hr, see reason below
This game does not need any introductions or explanations about gameplay. So I'll skip these.
Presentation
Visual tech is unimpressive, but very stylish and cheerful. Screens everywhere so I won't elaborate. Music and sound effects are very good, though heavily Japanese-themed.
High Production Value
This product has a very high production quality. You know this is really special when even load/save screens, interfaces, every single sound effect, navigation menus, loading screen, ranking screen, etc. etc. are absolutely customized and tailored to the game and its theme. Did I mention 'navigation menu'? Actually there isn't one - this has been specially customized. This stuff needs to be seen. This title also has what I consider the most impressive intro movie I have seen. The game manual - this gets the 'best game manual of all time' award. It literally looks like one of those colourful children books about animal stories and stuff.
New extras
Camera following the prince automatically looks through objects if blocked. Movies of King Cosmo's youth. Take pictues of in-game levels from 1st-person view(when the camera is obtained). May be more that I'm unaware of.
I am weak
After a few levels I was down with motion-sickness. I suspect that if I kept on straight paths and refrain from back-and-side-steps, this won't be a serious problem.