Dungeon Keeper is a strategy video game developed by Bullfrog Productions and released by Electronic Arts in June 1997 for MS-DOS and Windows 95. In Dungeon Keeper, the player builds and manages a dungeon, protecting it from invading 'hero' characters intent on stealing accumulated treasures, killing monsters and ultimately the player's demise. The ultimate goal is to conquer the world by destroying the heroic forces and rival dungeon keepers in each realm. A character known as the Avatar appears as the final hero. Dungeon Keeper uses Creative Technology's SoundFont technology to enhance its atmosphere. Multiplayer with up to four players is supported using a modem, or over a local network.

Bullfrog Productions Limited was a British video game developer based in Guildford, England. Founded in 1987 by Peter Molyneux and Les Edgar, the company gained recognition in 1989 for their third release, Populous, and is also well known for titles such as Theme Park, Theme Hospital, Magic Carpet, Syndicate and Dungeon Keeper. Bullfrog's name was derived from an ornament in the offices of Edgar's and Molyneux's other enterprise, Taurus Impact Systems, Bullfrog's precursor where Molyneux and Edgar were developing business software. Bullfrog Productions was founded as a separate entity after Commodore mistook Taurus for a similarly named company.