When playing in Bio Tetris mode, there are two basic settings for the feedback function. While this may all sound incredibly exciting, it really isn't all that great. Truth to be told, the bio sensor is a neat little gimmick for health freaks, but it doesn't really add much to the whole gameplay experience. It's a cool extra, but we wouldn't want to pay extra to get it. Clear lines with the standard Tetris blocks.
Background images change once in a while and the game gets gradually faster.
Although the style is similar to regular Tetris, a graphical heart display shows your bio rhythm. If it speeds up, the heart turns an unhealthy whitish blue. If you're relaxed, it pulses in deep red. Multiplayer This really needed to be mentioned separately. While most puzzle games still haven't made the step into the four-player arena, Tetris 64 manages to do so and delivers the best possible multiplayer gameplay.