Defend the Planet is a Games & Entertainment::Action software developed by Big Fish Games. After our trial and test, the software was found to be official, secure and free. Here is the official description for Defend the Planet: Defend the Planet from attacking aliens using your trusty laser cannons! A protective shield is your only line of defense, so shift energy between your guns and shield to keep the planet alive! Face different enemies with different strengths and powers. you can download Defend the Planet free now.