Ocean Trader is an economic simulation game from the makers of Pizza Tycoon and is recreating all the risks and rewards of the modern world shipping trade.
You find yourself in the role of a global shipping company manager and you have widespread competencies: pick up and deliver commodities or accomplish freight forward businesses for other companies. You can also buy new ships, insure them, get loans, design new ships and trade with goods on a worldwide scale. On the world map you can find around 100 harbors with more than 30 different goods.
Towns have an individual production of some goods which will, naturally, be cheaper there then in towns without production capabilities. The demand for production goods will be higher there, and therefore you will be able to sell them for a higher price in those harbors. Prices will change if you constantly trade a single good to or from a town. You can also risk the depletion of quantities if you do this, so the key to a successful business will be constant studying of the market prices for goods across the globe.