You're an old pirate ghost who controls the wind and the ocean. Use your mouse to make gusts of wind through the sail of your friendly pirate boat and move right to uncharted islands.
Plunder goods and hire new shipmates from taverns as you help your pirate friends become more notorious. The more notorious your friends become the stronger the opposition.
Top Tip: Don't move too fast - too much wind in them thar sails and she's gonna go down matey!