
The Flat Zone, showing the standards of 'Superflat World'-set levels.
The Superflat World is the location of the Super Smash Bros. Melee stage Flat Zone. Since that stage is formed like an old Game & Watch videogame machine, it is possible that the Game & Watch games are set in the Superflat World. The Superflat World is also the home of Mr. Game & Watch.