Sonic Red: Bowser Goes Crazy and Super Mario Blue: An Eggman Rage is a video game for the Venus that serves as a crossover between Saurus Sega's Sonic the Hedgehog series and Nintendo's Super Mario series.


The story begins with Bowser and Doctor Eggman joining forces to rid themselves of their respective enemies Mario and Sonic the Hedgehog by genetically modifying Eggman's robots and disguising them as Mario and Sonic, leading the two protagonists to believe they are against each other. Mario and Sonic are alerted of their respective worlds' predicament and are sent to get rid of the disguised robots. Mario and Sonic eventually encounter each other at Mt. Flamethrower, believing each other to be a disguised robot. However, they soon discover that they have been tricked into fighting each other by Bowser and Eggman and decide to team up against them.

Not even Petey Piranha, Rouge the Bat or E-123 Omega can stop them, but Bowser uses his son, Bowser Jr., to kidnap Princess Peach and Knuckles the Echidna. Silver the Hedgehog informs Mario and Sonic what happened to Peach and Knuckles. Sonic rescues Peach and Knuckles while Mario distracts Bowser Jr.; finally, Mario and Sonic defeat Bowser Jr. at his own game. Peach has an idea: If they put a tracer on Bowser and Eggman, they would track them to their headquarters. Mario defeats Eggman, but he forgot to insert the tracer. Sonic defeats Bowser and he puts the tracer on him. Mario and Sonic reach their headquarters called the Egg Plant. As a team, Mario and Sonic defeat Bowser and Eggman. They thank each other as the games ends with a photo of Mario having Sonic in a friendly headlock, and the credits roll.