It's an evil twin showdown in Jimmy Neutron vs. Jimmy Negatron for the GameBoy Advance. When Jimmy's mischievous alter-ego, Jimmy Negatron, escapes from another dimension, it's up to the boy genius to stop him. Navigate through challenging levels, utilize a variety of wacky inventions, and battle Negatron's robotic minions in this action-platformer. Can Jimmy outsmart his evil counterpart and save Retroville?