Mutant Fridge Mayhem is an action game set in The Amazing World of Gumball universe where players battle mutated food across 30 levels. Players can switch between three playable characters - Gumball, Darwin, and Anais - each with unique abilities to combat the infected leftovers threatening Elmore. The game features character power-ups, including mustache transformations and tennis ball cannons, as players work to contain the mutation outbreak caused by spoiled jelly in the Watterson family refrigerator.