From Bungie, Pimps At Sea.

Pimps At Sea is a trailblazing combination of action and real-time strategy set in a lush, fully 3D world. You'll sail from port to port, making mad loot with all the freedom and realism offered by the most complex economic simulation ever to appear in a game.

Now someone just needs to make a game of Attack of the Zombie Street Pimps.