Like its predecessor, players take the role of a dungeon keeper, building and defending an underground dungeon from the would-be heroes that invade it, as well as from other keepers. In the game's campaign mode, the player is charged with recovering the portal gems from each area in order to open a portal to the surface.

Like its predecessor, players take the role of a dungeon keeper, building and defending an underground dungeon from the would-be heroes that invade it, as well as from other keepers. In the game's campaign mode, the player is charged with recovering the portal gems from each area in order to open a portal to the surface.