Dungeon Keeper

Dungeon Keeper is a strategy video game developed by Bullfrog Productions and released by Electronic Arts on 27 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 (resembling the Avatar from Ultima VIII: Pagan) appears as the final hero.