3D Tetris is a video game released for the Virtual Boy

Virtual Boy

The was a video game console developed and manufactured by Nintendo. It was the first video game console that was supposed to be capable of displaying "true 3D graphics" out of the box. Whereas most video games use monocular cues to achieve the illusion of three dimensions on a two-dimensional...

 in 1996. A Japanese version was planned, to be called Polygo Block, but production of games was ceased due to lack of interest in the Virtual Boy system. This was the last game released on the Virtual Boy.

Gameplay

This version of the game of Tetris uses a three-dimensional playing field as opposed to the traditional two dimensions more generally used. 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.