A free version of Planetary Defense 1.1 can be found on our website. According to the information on our software library the most popular version of the game is: 1.1. The size of the file you can download is 4.7 MB. Please note that it is created by Positech. The built-in antivirus system reports that the software is safe. This game is included in Games, according to its main functionality. Our users often download the installation file for the game with the following name: PlanetaryDefense.exe.