If you're looking for a trading simulation game. This is the right one for you.
The game's historical background is setting a stage at 16th century Carribbean. The key concept of the previous works were open free play. Port Royal 3 continnues this trend of free play. You're welcome to explore the Carribbean world as pirate, merchant, nationalist and explorer. Their some simple question to walk you though the game, and somewhat complex question to enhnace your play. The crown jewel of this game is still simulated trading system. The battle system is mild and not intensive. It's graphic is not kickass, but it's also acceptable for me.
I will check the muliplayer during the weekend.