價格：免費
更新日期：2014-11-06
檔案大小：24.7 MB
目前版本：1.0.1
版本需求：需要 iOS 7.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
A mysterious event has disrupted the orbit of thousands of asteroids sending them on a collision course with the fledgling Mars colonies.
Tap to aim the orbital defence cannon, vaporise the debris and help the settlers escape before the shield fails!
Once aimed tap to fire or hold down to charge the cannon further for a bigger explosion. Be careful each shot will cause heat to build and if the cannon overheats then you will have to wait for a coolant flush to restore operation.
支援平台：iPhone