價格：免費
檔案大小：129.6 MB
版本需求：系統需求：iOS 9.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
A super entertaining way to make the time pass having fun with numbers. Feel the thrill as the numbers pile up in the cells. Aim to reaching 21 in each cell. If you go beyond 21, the game is over.
Ideal for commuting trips, waiting in lines and for a relaxing break any time.
支援平台：iPhone, iPad