Interesting little game. Odd combination between RTS and tower defence. All reviews said it was very hard to understand and needed huge amounts of planning and tweaking but it was easy enough to steam roller the main missions with just a fleet of heavy cruisers with as much fire power and armour as affordable. I'm sure the expanded missions would require a lot more tweaking. A semi Humble Indie Bundle win. It was good, but not up to the quality of the rest of the games in their packs...