SubRoc-3D (サブ・口ック3D SabuRokku-3D) is a first-person arcade shooter game released in 1982 by Sega. It is the first commercial video game in stereoscopic 3-D, using a periscope-shaped display with a different image for each eye. It was jointly developed by Sega and Matsushita Electric (now Panasonic), who developed its active shutter 3D system. The game has stereo sound, and also changes the backdrop to reflect day, night, dawn, and dusk.