From the Manufacturer After falling under the evil rule of Dr. Weil, Neo Arcadia has collapsed into a state of chaos and confusion. Zero discovers this disastrous turn of events when he and his friends come to the rescue of a band of humans fleeing Neo Arcadia. Now it’s up to our hero Zero to resolve this terrible conflict between humans and reploids, and restore peace and security to the land. With new systems to seize enemy weapons and create strengthening chips, plus new Cyber elf programs to introduce new abilities, this is the most exhilarating action-adventure ever to come to the Game Boy Advance! Features:The Zero Knuckle lets you battle with weapons seized from defeated enemies Plus fuse stolen enemy parts to create brand new items and abilities New weather changing system lets you customize the difficulty of gameplay 16 stages, 16 bosses, and 40 enemies to beat