I flounded a bit.  I admit, I wasn’t really prepared for the islands theme.  But I think I finally hammered something out that should be A) doable in the time allotted, and B) fun, C) something I can code up easily.

The idea is that you are a volcano god.  A jealous one.  (Is there any other?)  You’ve got your happy little islands, filled with worshiping natives, but then you become aware that some other miscreants on OTHER islands are worshiping another volcano god.  This will not do!

Here’s my concept screenshot:

So, it’s time you start putting all that worship energy to good use — by launching fireballs at the other god’s islands!  Every time you hit one island, you kill some of the natives, but also knock off a few who then swim to nearby islands.  This increases the worship power coming from a single island (allowing the god to fire it faster), but if all islands are sunk, the other god is out of the game.  Who wants a god that nobody is left alive to worship?

Well, okay, it sounds simple and maybe a little stupid, but it’s the best I’ve seen.  Props to Ember for giving me the idea!  Anyway, it’ll be fun coding all those little native behaviors!