Planetary Defense Cost: $9 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Planetary Defense: Planetary Defense is a space strategy game where you take charge of a planets defenses against waves of attacking aliens. Defend against missiles, multiple warhead rockets, cloaked starships, meteors, homing missiles and laser-armed satellites. Some of the 21 missions include orbiting moons complete with colonies, defensive shield grids, radar bases and evacuating starships. Superb graphics and low system requirements, only a 3MB download. High score table, 3 Difficulty levels and a variable game speed for hours and hours of space-blasting fun!