Bullet-Proof Software

Bullet-Proof Software Inc. (BPS) was a Japanese video game developer founded in 1983 by Henk Rogers. At first it would acquire fame by the creation of NEC PC-8801 RPG The Black Onyx, however fate would tie the company with the involvement of the Famicom and Game Boy versions of Tetris. In 1996, Rogers would fund Blue Planet Software Inc. in Honolulu, Hawaii as a successor of the original Japanese company, they would continue developing Tetris games using the same BPS initials. On February 22nd, 2001, Bullet-Proof Software would close it's doors.

Source : IGDB