BPS, Inc. (株式会社ビーピーエス Kabushiki-gaisha Bī Pī Esu), short for Bullet-Proof Software, Inc., was a video game developer and publisher based in Japan. It was established and owned by Henk Rogers, who would become close friends with Tetris creator Alexey Pajitnov.
Henk Rogers established Bullet Proof Software on August 10, 1983 in Shin-Yokohama, Kohoku-ku, Yokohama, Kanto, Japan. BPS had acquired the rights to publish home computer versions of Tetris in Japan from Sphere, Inc. as well as the rights to publish a Famicom version of Tetris from Tengen.
BPS eventually became the Japanese subsidiary of Blue Planet Software, a company also established by Rogers that shared Bullet Proof Software's initials. Bullet Proof Software was shut down on March 31, 2001.
BPS sub-licensed the handheld rights to Tetris to Nintendo, resulting in Nintendo releasing a Game Boy version.