Planet Guardian is an HTML5 shooting game where you need to protect the Earth from the attacks of spacecraft and planes from other planets. Shoot the enemies but don't also forget to protect your allies from the damages that these enemies will cause. Learn to distinguish who are your enemies and who are your allies and let your allies enter the Earth and help you. Collect the power-ups and also, do not shoot these. The power-ups will also help you improve your defense as well as make your armors much stronger. As the game progresses, the enemies will be a lot more difficult to kill and will also attack you in massive volume. So make sure to shift your attacks from one side to the other quickly and do not let your enemies enter the Earth and ruin it! Have fun playing this mouse skill game that will surely give you a feeling of excitement!