Dungeon Keeper 2

Dungeon Keeper 2 is a strategy game. In the sequel to Dungeon Keeper, the player takes the role of a 'dungeon keeper', building and defending an underground dungeon from the would-be heroes that would invade it, as well as from other keepers. In the campaign mode, the player is charged with recovering the portal gems from each area in order to open a portal to the surface. The kingdom of Harmonia, ruled by King Reginald, has been under siege from dungeon keepers for a while, and his wizards have devised a device known as a Portal Gem to confine evil creatures to the underworld, while still allowing good forces access. Reginald has twenty Portal Gems, each assigned to a realm and safeguarded by its guardian. These devices have forced even serious dungeon keepers into retreat. An evil warrior known as the Horned Reaper (or "Horny") believes he has the ability to remove Portal Gems from Harmonia, and has enlisted the player's assistance in conquering its realms so he can claim the Portal Gems.