This little browser-based strategy is painfully slow - so slow you can go to the post office, extricate yourself from having to talk to the old woman from next door, then make a cup of tea and still only have generated just enough resource to continue - yet it's somehow utterly engrossing. As the title suggests, you have to break the tower at the far end of the island. You can only do this by placing buildings on the island, and eventually masons at the foot of the tower. That's all the influence you have on the lives of the peons and warriors who populate the island, and who battle with the monsters that emanate from the tower. No, really, it's got something. Try it. (And don't accidentally click away from a twenty-minute game, as I just did. NoooOOOo.)
I found this minuscule treasure over on Indiegames.com.