Zoo Corporation is a Japanese company based in Nagano Prefecture that develops medical prescription systems and video games.
Zoo was founded on April 8, 1986 by Jinichi Miyajima. It developed a computer-based prescription system in 1987. In 1994 it released a prescription system named Gennai Online which also supported revisions to pharmaceutical information and automatic drug ordering. Yakugen is a drug database linked to Gennai, and MediCounter is a drug information system the company made for face-to-face sales.
In 1990 the company developed the first Japanese UNIX game. It was released in the United States by Spectrum Holobyte as BreakThru!.