System: NES | Genre: Adventure | Published by: Activision | Release Date: 1990
The Adventures of Rad Gravity (Buy on eBay) takes place in the far future when humans have colonized many planets and created Compuminds which can communicate between the worlds. The evil wizard Agathos has shut down and hidden the Compuminds. It is up to Rad to rescue the eight missing Compuminds.
The game takes place on eight different planets, which each has a unique theme. Planet Effluvia is the planet of caustic trash. On planet Turvia gravity works in reverse, making Rad and the enemies appear upside down on the screen! The instruction manual is notable for the inclusion of a 14-page comic book to set up the mission for the game.
FAQ/Walkthroughs: GameFAQS
History/Details: Wikipedia
Speed Runs: Speedrun.com