Maeio is a bootleg Game boy that was sold by Jidan.
It is coloured in slightly transparent pink plastic and has green buttons. It runs on 2 C batteries, and has a keychain attached to it. It features Paper Mario's head on its cover with the game's logo in the style of the Super Mario Sunshine logo.
According to a listing for the game, Mario fights a dragon in the game and the player should earn points on each level to move onto the next one.