Hisao Oguchi graduated with a degree in engineering and joined Sega the following year in 1984 as a planner, with his very first work being Doki Doki Penguin Land for the SG-1000. Oguchi also was then responsible for Super Monaco GP and contributed to the medal game area with games such as Royal Ascot and Bingo Party. In 1990 he helmed AM3 which became Hitmaker in 2000. During this period he managed a group of 5 producers and 9 directors. He produced dozens of arcade titles including sports games (Decathlete, Virtua Tennis), rail shooters (Rail Chase, The Lost World: Jurassic Park, Confidental Mission), puzzle games (Baku Baku Animal, Where's Wally? arcade game), driving games (Sega Rally Championship, Le Mans 24, Crazy Taxi), versus games (Funky Head Boxer, Last Bronx, Virtual-On), and more. One of his producers was Tetsuya Mizuguchi, who spuned off separate development teams after the first Sega Rally game. He also developed the pair of arcade games, Derby Owners Club and World Club Champion Football which drove industry development and profitability in Japanese arcades with their card and satellite systems. At Hitmaker, he also gave the greenlight to Segagaga. His career as a developer ended when he was promoted to company President and CEO in part of Sega's consolidation of in-house studios in 2003.
As president he was tasked to bring back the company into profitability together with Hideki Sato, who was shunned into vice chairman. During this period he was also approached by Hajime Satomi, president of Sammy Corporation about a potential merger. When Sega and Sammy merged to form Sega Sammy Holdings, he had various executive positions at the Sega Sammy group. Most recently he has helmed the casino initiative of Sega Sammy.
- Plunkett, Jack W. (2009-01-01). Plunkett's Entertainment and Media Industry Almanac 2009 (E-Book): Entertainment and Media Industry Market Research, Statistics, Trends and Leading Companies. Plunkett Research, Ltd. pp. 482–. ISBN 978-1-59392-471-3. Retrieved 9 May 2011.
- Plunkett, Jack W. (January 2006). Plunkett's Entertainment & Media Industry Almanac 2006: The Only Complete Guide to the Technologies and Companies Changing the Way the World Shares Entertainment and Information. Plunkett Research, Ltd. pp. 472–. ISBN 978-1-59392-051-7. Retrieved 9 May 2011.
- Kent, Steven L. (2001). The Ultimate History of Video Games: The Story Behind the Craze that Touched our Lives and Changed the World. Roseville, California: Prima Publishing. p. 578. ISBN 0-7615-3643-4.
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