Due to limitations of the Game Boy's screen, the player can't see the adversary's gameplay and it is represented with a flashing laser on the left side of the screen, which height represents how tall the adversary's tetris pieces are stacked, and like it, reaching the top of the screen calls for a game over. This version also has the special meter, but only for some Tetris variants.
The Game Boy's screen limitations prevent players from seeing their opponents' gameplay; instead, a flashing laser on the left side indicates the opponent's tetris pieces' height, and reaching the top triggers a game over. This version also includes a special meter but only for certain Tetris variations.