First you will Create your dungeon, expending resources to place rooms and passageways and populate each floor with monster units (allies). When the invasion begins you go to Battle, where units clash but also the dungeon floors themselves take damage and may be destroyed. If the humans makes their way to the "Labyrinth Core" the player will lose. Stay vigilant and use your resources and units well. * Capture and sex-train human women! Heroines of the enemy units can be captured in battle, corrupted, and controlled as allies in battle. This part feels like an action game, and it's fun to wield the s*s of the enemy units against themselves.