Blasted Fortress is a physics-based castle assault game with an added layer of resource management. Even while you're not playing, crops grow, market prices fluctuate, seasons change, and you may come back later to be greeted by disasters that happened while you were away or gifts to bolster your resources. It's a blend of physics decimation, looting, hoarding, and RPG-style enhancements. If you're more creatively inclined and want to add more content to the game, you can even create your own buildings to siege using the built-in building editor.
The trailer for Blasted Fortress that debuted when we started our Steam Greenlight page.