I have an idea for a sci-fi themed boardgame. It came to me after playing Arkham Horror with a few friends recently. Basically the idea is that the players cooperate as the captains of a fleet of starships charged with defending the human race from a fleet of alien invaders. The beginning of the game sees the players populate the Inner Planets with resource-generating outposts, similar to the initial soldier placement phase of the game Risk. Once the Inner Planets have had all of their resources allocated, the actual game begins. The players must defend the Inner Planets against Aliens attacking from the Outer Planets. As long as the Aliens are kept in the Outer Planets region, the resources of the Inner Planets will continue to be extracted at their full capacity. But if the Aliens manage to break into the Inner Planets, then the resources generated on the those worlds will be at stake, potentially leading to all of the players losing. The only way to win StarCaptain is for the players to cooperate and locate the Alien Mothership and destroy it in combat.

I also have concepts for the character system, rules for combat, different cards and how to use them, etc. if you are interested.