Most of the the day is now finished, and I've kind of got a mechanic working which is hopefully fun enough to take to the next level. I've got with a slight extension to the Galcon game formula, where you can sacrifice some of your units to summoning more powerful denizens.

The core mechanics seem to work, but I really need to get a competent AI in and working. This is a pretty new area for me. The plan is to try and get a behviour tree model working with Java Behaviour Trees