Annoying to control, but at least a neat concept.
For the game, it has a tilt sensor in the game pack, and you use nothing but tilt to play the game. You want Kirby to move left, then tilt it left. Want him to move right? Tilt your GBC right. Since it's like this the game is not really a platformer. In fact, it's doesn't really fit into any genre, maybe one of it's own.
The controls take some getting used to. The tilt can be very hard to learn at first, but you'll get used to it about an hour into it. This isn't your average Kirby game so if you thought it was just another cool Kirby platformer than you may want to check it out before buying. It is a pretty fun game though.
The graphics are average for Gameboy Color. The music doesn't sound great but it is good.