The goal of the game is clean and simple: As the God of Destruction, you must create a dungeon that is both difficult and powerful enough to fend off the human hero invaders. The dungeon must have a self-sustaining ecosystem, so players must strategically dig and create a dungeon with a balanced food chain. Periodically, human heroes will invade the dungeon, in order to bring peace and harmony to the world. But, they are your enemies. You must destroy the heroes before they capture the Overlord and take him back to the surface.

The game system may be simple, but this sequel is loaded with tons of evolving monsters, environments, and heroes for hours of game play. Compared to the original game, part two has 2.5 times more heroes, 3.3 times more monsters, and four times more stages to beat.