A turn-based grand strategy game in space: Defend Earth against an alien invasion from the edge of the Solar System. Negotiate with the various governments of Earth and secure their support - One way or the other. Establish your bases on other planets to take the fight to the enemy. Design and build powerful spaceships, then take them into battle.
Tech Tree
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Description
A small slice of the tech tree. There are usually a lot of options at any point in time.