In the game, players assume the role of an Underlord tasked with building dungeons that contain deadly traps and enemies to kill wandering heroes. The game starts with a blank slate and lets players choose where to "dig, fortify, and build" to create their dungeon. The game is played in real time, with the player actively making decisions while fighting occurs. Armies of minions can be trained and commanded to vanquish foes, and spells are available which can injure enemies or assist minions during battle. The game requires micromanagement to keep minions working, supplying them with food and gold.
