Sony Imagesoft Inc. was an American video game publisher that operated from 1989 to 1995 and was located in California.

It was established in January 1989 in Los Angeles, California, as a subsidiary of the Japan-based CBS/Sony Group (CSG) and initially named CSG Imagesoft Inc.[1] Their focus at the beginning was on marketing games exclusively for Nintendo consoles.

Sewer Shark, initially released exclusively to Sega CD, is a rail-shooter that years earlier had been shelved as part of the ill-fated Control-Vision platform.

The Sega CD version was enhanced with better cut scenes with voice actors and digital stills and featured music from the film soundtrack.

[8] Starting in July 1995, just two months prior to the release of the PlayStation console in Western markets, Sony Electronic Publishing restructured and renamed its divisions.