Being the personification of evil is a full-time job, but someone's got to do it! In Bullfrog's Dungeon Keeper, the player assumes a role unlike that in most other gaming titles -- that is, as the master of an underground realm, dedicated to the pursuit of depravity.
Players must use the worker Imps at their disposal to build a dungeon that consists of rooms of various types, such as treasure rooms, lairs, hatcheries, libraries, workshops, and torture rooms. Construction costs money, and, as the enterprising Dungeon Keeper digs out new ground for laying rooms, he will run across seams of Gold and Gems which can be used to replenish his assets.
A well-constructed dungeon will attract nefarious creatures from all walks of death who will, for a small stipend of gold, sell their services to their Keeper. These mischievous creatures will attack anything "good" that crosses their path. This is helpful to the evil Keeper because do-gooders of all sorts will begin knocking at the Dungeon Keeper's door on a regular basis.
Amoral creatures like Dragons, Demon Spawn, Hellhounds, Vampires, and Ghosts ache to get a piece of any hero that might venture a little too close to the Keeper's dominion. The Keeper can also research magical Spells that can be unleashed upon unsuspecting groups of champions, as well as Traps and Doors of various types that can be placed at critical junctures in the Dungeon.
Dungeon Keeper is a level-based game with twenty single-player levels, six "hidden realm" levels, and fifteen multi-player levels designed for two to four players.