[freddyfox]

- Scatter guard towers around the different islands. Give them a good number of guards. Make it so that other kingdoms can come to that island and attack a guard tower. If they can fight off all of the guards and raise their flag, that guard tower belongs to them and the guards then become guards of whatever kingdom. This would be a good way to start an RP invasion, as more and more of the guards towers are conquered and there are more and more soldiers ready to fight.

(I'm out of ideas, add your own!)