Nintendo Cereal System is a breakfast cereal that featured two Nintendo franchise characters, Mario and Link.  Produced in 1988 by Ralston Purina the cereal promoted the Super Mario Bros. and The Legend of Zelda video games for the Nintendo Entertainment System.   Ralston named the cereal after the Nintendo Entertainment System as they were looking to capitalize on the massive success the system had in North America at the time.

Unlike traditional breakfast cereals each box of Nintendo Cereal System contained two separate cereals.   Each box had two separate bags inside containing different cereal.  One side of the box featured cereal based on the Super Mario Bros. franchise and was called the “Super Mario Bros. Action Series” while the other side of the box featured cereal based on the Legend of Zelda franchise and was called the “Zelda Adventure Series”.

The cereal in the Super Mario Bros. Action Series consisted of fruity-flavoured characters and items found in the Super Mario Bros. video game such as Mario, Super Mushrooms, Goombas, Koopa Troopas and Bowser.  The cereal found in the Zelda Adventure Series consisted of berry-flavoured characters and items from the Legend of Zelda video game such as Link, hearts, keys, boomerangs and shields.