Tetris (Russian: Те́трис, pronounced [ˈtɛtrʲɪs]) is a Russian tile-matching puzzle game, originally designed and programmed by Alexey Pajitnov. Bullet Proof Software's version was the very first commercial release of Tetris in Japan. It was published in 1988 for several popular Japanese computer platforms, including the Fujitsu FM-7, MSX2, NEC PC-88, NEC PC-98, Sharp X1, and the Sharp X68000. However, BPS did produce one version for console; the Famicom version.

The first versions of Tetris created by Bullet Proof Software were infamous for their unusual control scheme, particularly the Famicom version. Instead of using a fire button for the rotation button, rotations are performed by pressing down on the joystick or control pad. Instead, pressing a fire button causes a hard drop. Players who try this game for the first time and are familiar with more traditional control schemes have a hard time playing initially while they adjust to this format. BPS adopted a more traditional control scheme with subsequent releases of Tetris.