About Earth Attack GameEarth Attack is a beautiful 10-stage shooting defense game where you use the mouse or left click button to change which direction the cannons on Earth are firing, while the moon tends to follow along and shoot adjacently. Your cannons shoot automatically, though you control the aim. Shoot incoming asteroids before they hit the planet. When you defeat enemies they leave behind pink and green crystals. The pink crystals immediately restore your health. The green crystals allow you to periodically upgrade your cannon shot power, turning speed, and planet maximum health. As you advance through the game some asteroids move faster and require a quicker response time to defeat - particularly the small red ones. The black explosives require many shots to destroy. The red smooth gel objects are stars which you can not destroy, but must overcome the gravitational force on by having your moon shoot at them until they stop approaching and then move away. If you get a perfect score on a stage the planet will turn gold at the end of the level & the gold indicator will show on the level select screen. This is a JavaScript web application which uses cross-platform mobile-friendly HTML. All modern web browsers like Microsoft Edge, Apple Safari, Google Chrome, Mozilla Firefox and Opera should support it. This game works on just about any type of computing device including Microsoft Windows desktop computers, Apple OSX Mac computers, iOS powered tablets and phones like the iPad and iPhone, laptops like the Google Chromebook, and the many types of mobile phones from manufacturers like Samsung which are powered by Google Android.