價格：免費
檔案大小：16 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
Ballis:
A new Concentration game, bring down the ball safely through differently designed levels and crack the high score!
Please send errors & suggestions to apps@nsystemz.com!
Have fun using it!
支援平台：iPhone, iPad