KeeperRL is an ambitious dungeon simulator with roguelike and RPG elements. Take the role of an evil wizard and study the methods of black magic. Equip your minions and explore the world, murder innocent villagers and burn their homes. Build your dungeon, lay traps and prepare for an assault of angry heroes.

The gameplay is a combination of real-time dungeon sim, and simultaneous turn-based, roguelike, adventure mode. The dungeon/colony sim has real-time base building, RPG-like army gathering, and occasional tower defense for when enemies invade the player's dungeon. The adventure part involves exploration of a large, procedurally generated world map, and tough squad-based combat where the player selects a leading minion to move the squad around and fight threats in simultaneous turns.