War for the Overworld is mix of real time strategy and god game, influenced by Dungeon Keeper, Overlord, StarCraft and Evil Genius.
In War for the Overworld, you have the power to create vast dungeons filled with hordes of evil minions who share a common goal: to crush the bones of the goodly heroes that dare to enter your unhallowed halls.
The game is currently on Kickstarter. It has raised about £35k so far, with final target being £150,000. There are still 30 days left in the campaign, so there is a pretty good chance that it will get funded.
You can pledge £10/$16 or more on Kickstarter to ensure a copy for yourself. Expected date of release is August 2013.