價格：免費
檔案大小：30.6 MB
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Destroy alien ships by firing projectiles from your orbital defense station. Watch out! The aliens have deployed gravity wells. You'll need to be aware of gravitational effects as you solve puzzles or play in the endless arcade mode! Compare your scores with friends on the leaderboard and complete challenges to unlock new skins!
Music Credits:
Pulsar by Nicolai Heidlas | https://www.nicolai-heidlas.com
Music promoted by https://www.free-stock-music.com
Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
支援平台：iPhone, iPad