Now I am a fan of KP, but I will not praise this game where it is not due! The graphics are typical for a GBA, nothing really too special with the sounds or music either. The gameplay is platform type gameplay and story/dialogue is fun if you enjoy/enjoyed the show.
The game is pretty straightforward to beat, if you want to go collectible hunting you can as well (I currently am doing just that actually).
Overall a fun game if you are a fan of the show, or like platformers.