價格：免費
檔案大小：25.5 MB
版本需求：需要 iOS 5.1.1 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Rules 123 is a tiny puzzle that you will grow to love: it trains your brain, challenges you, and gets tougher the more you play.
1+2=3
3+3=6
6+6=12 and so on ...
Try it out, and enjoy it!
支援平台：iPhone, iPad