Designer summary:
How to Host a Dungeon is a solo game of dungeon creation where you build a dungeon through its history from the dawn of time.
In each age of How to Host a Dungeon, different forces drive how your dungeon evolves. In the Age of Civilization, Dwarves may build their first underground cities, or Dark Elves may build their slave pits deep beneath the surface. In the Age of Monsters, orcs, goblins, dragons, and beasts compete with one another for food and treasure while raiding the surface kingdoms and enduring invasions of adventurers. In the Age of Villainy, an arch villain seeks to conquer the world using the mature dungeon as its base of operations.
When you complete your game, you have a dungeon history and map suitable for a dungeon crawling role-playing game or just your own enjoyment. [From the Web site]