RocketCat and SuperDog vs. The Robot Empire! is a mildly successful side-shooter cult-classic developed by Nintendo for the GBA. There has not been any sequels, but rumor has it the game will have a sequel on the 3DS.
One day, RocketCat and SuperDog were flying around outside, when giant robots started raining down from outer space. The robots started stealing the souls of other dogs and cats around town, and RocketCat and SuperDog are the only heroes to uncover the mystery of the evil robots and return everybody's souls!
Boss: Robotic Spacecraft
Boss: Robotic Dinosaur
Boss: Robotic Vehicle
Boss: Dr. Hamster
Boss: King Willy
Boss: Extreme Robot
Boss: Omega Defense Sentry
Boss 2: Dr. Hamster
Boss 3: Mutant Hamster
Boss 4: Heart of Evil (Hard-Mode Only)
After Dr. Hamster is defeated and the souls are back with their owners, everybody is being chased by more robots. Meanwhile, RocketCat shackles everyone into an old spacecraft, and they fly off into space. TO BE CONTINUED, it says on the black screen.
Players control both SuperDog and RocketCat, being able to switch their character with L. Press A for a basic shoot attack (Eyebeam or Rocket), Press A for a charged attack (Large Eyebeam or Large Rocket) or R for a special attack (RocketCat: Unleash a giant rocket that explodes and kills everyone. SuperDog: A spell that heals you to full health. Unavailable in Hard Mode.). Special Points can be generated by attacking, collecting gold, or collecting pointballs. Press B to drop to the ground. Charms can be equipped, with only one per character at a time. Three gears are hidden throughout every level.