價格：免費
檔案大小：28.2 MB
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Are you ready to defend earth from its greatest threat from the deepest reaches of space? An alien invasion is on its way and you are the sole galactic defender of earth. Do you have what it takes to defeat waves upon waves of aliens, asteroids, and space debris?
The controls for the game are simple enough. Swipe around on the screen to control your movement. And tap the fire button to shoot your laser gun.
Don't let the easy controls fool you. This mission will test you to the limit of your skills. Only a few will survive the test.
支援平台：iPhone, iPad