Terrestrial Domination is an RTS game that takes place in a solar system with planets orbiting around a star. When you start you build space stations around your home planet and mine asteroids for resources. You can also colonize or invade other planets, and build warships to destroy the other side space stations. You can download the Alpha Build at www.terrestrialdomination.com
Three or more of these stations can be used to create a defense barrier around a planet.