I don't know if this already exists, but I think it would make perfect sense as many people have done the challenge before. This would include Super Mario Bros, Super Mario Bros The Lost Levels, Super Mario Bros 2, Super Mario Bros 3, Super Mario World, Super Mario Land, Super Mario Land 2, Super Mario 64, Super Mario Sunshine, Super Mario Galaxy, Super Mario Galaxy 2, Super Mario 3D Land, Super Mario 3D World, Super Mario Odyssey, New Super Mario Bros, New Super Mario Bros Wii, New Super Mario Bros 2, and New Super Mario Bros U. (If we actually debate this category existing, we can discuss New Super Luigi U being included as well.