價格：免費
檔案大小：85.7 MB
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Deep in the desert, Zone 618 of your once hidden, super-secret base is under attack from an unseen enemy. You must use your shield to defend the crypto tower. From time to time you will be sent a power up which you must let reach the tower so it can help boost your defences.
支援平台：iPhone, iPad