價格：免費
檔案大小：7.3 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
A game for those who want to learn how to quickly add large numbers in your mind.
To go to the next level of complexity, find two numbers, the sum of which is equal to the number. You lose if you choose wrong numbers or time runs out.
支援平台：iPhone