One thing that has worked when you have built a lot of nice world to explore, but no particular reason for gamers to _want_ to explore it, is to build some sort of commerce system when you earn gold/credits/conch shells for transporting things from places where they are common to places where they are rare.
Then you need to build something useful to spend your gold/credits/conch shells on. Better boats springs to mind, but of course the possibilities are endless. Laura's .02 euros
