Royal Defense: Invisible Threat

The castle needs a hero – hordes of trolls are surrounding it! Build towers, save money, learn spells, and keep the enemy away! Follow the exciting story of the dwarven kingdoms eternal struggle against the troll hordes, who want only to crush the dwarves and claim their territory. To defeat these monstrous hordes, you must construct defensive towers and units and learn to wield powerful spells. Tap anywhere you like for a handy pop-up menu listing all the units and structures that can be built ...