3D Tetris is a Virtual Boy game developed by T&E Soft and published by Nintendo. A Japanese version, Polygo Block, was planned but was cancelled due to the lack of interest in the Virtual Boy. 3D Tetris is the last game ever to be released on this platform.
This version of Tetris uses a three-dimensional playing field as opposed to the traditional two dimensions. The player not only rotates the playing piece horizontally, but vertically as well which means that the piece has four possible directions in which to move. It is also known to be the hardest style of Tetris gameplay.