Good graphics and an interesting game world sure do help improve playability. Jimmy and friends are a colorful bunch, and you'll find the game painted in bright primary colors. There are some nice visuals (lighting, textures, etc.) that show up and lots of fun sound effects, but the best thing eyewise is the variety. Jimmy Neutron Boy Genius is built on a 'hub' concept that has you exploring a central area with little challenges, almost mini-games, all connected but still separate. Think of Spyro, Crash, any of the great, well designed games in this genre and you have your blueprint. This allows for more creative freedoms, especially in the early half of the game with Jimmy and friends exploring an amusement park. Each 'world' has a different objective and sometimes different action, with the end goal finding little trinkets and bringing them back to show off to Jimmy's friends. There is even a very fun and retro-looking arcade game tucked away that may have as much appeal to older gamers as Jimmy's character will to the younger set.