Product description Electronic Yugioh Multi Master 5 Games Amazon.com The best part about this game is the case, an ingenious thing that folds up into a tidy golden triangle that could almost be an ancient artifact from the cartoon universe of the Yu-Gi-Oh! television series, and folds out to give access to the game buttons and display screen. The games themselves, all simple variations on Tetris-type puzzlers, really have nothing to do with Yu-Gi-Oh!, but are pretty fun in spite of the rudimentary monochromatic display that is unlikely to impress any members of the Game Boy Advance generation. Requires a small watch-type battery (included). --David Stoesz