價格：免費
檔案大小：18.4 MB
版本需求：需要 iOS 10.3 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Destroy as many alien ships as you can to achieve the highest score possible!
Instructions:
Drag to move your ship horizontally.
Tap to shoot.
How the score system works:
Successfully shoot down alien ship: +1 point.
Alien ship gets past without being shot: -5 points.
If the alien ship crashes into your own you lose -25 health.
支援平台：iPhone, iPad