A unique world for a unique concept.
The level design is wonderful. Very immersive. Very well done. The graphics are also very nice, for the time that they came out, and I would argue for now as well. Very colourful, visually stunning, and very easy to keep playing the different levels, to see what other kinds of terrain that the developers have thought up. I like the fact that it's cartoony, and that you can fight enemies that are very cute and you don't have to really be scared of them.
The Sound is very cute as well. From the Globox people that you find occasionally to the sound of the enemies as they jump around or try to attack you. The overall 'mood music' is pretty damn good as well.
This game came out a long time ago, but it still manages to snag in a great score from me. If you own a dreamcast, and want to play simply a very cute game, give this one a try. Hopefully you'll like it as much as I did.