In a distant realm of sword and sorcery, a great evil had swept across the land. Demons from the underworld and their evil minions poured across the kingdoms of man, until the great cities lay in ruin, and there were naught but a handful of cowering souls remaining. Choose your king, as you alone must travel to the end of the world, build a mighty castle, slay the undead hordes, and convert the people of the land to loyal subjects of your domain... in the Age of Castles!

and play on your PC any time you want, whether or not you're online.