Planetary Orbital Defense

Planetary Orbital Defense is a space shooting tower defense game.  There are aliens and creeps making their way toward your planet and its up to you to defend it at all costs.  Keep your city safe and use your best shooting and tower defense skills to keep your city from being blown off the planet.  After each level you can earn bonus points so make sure your aim is good and you shoot the aliens before they destroy your town in the Planetary Orbital Defense game.