21点

现在在世界各地的赌场中都可以看到二十一点，随着互联网的发展，二十一点开始走向网络时代。该游戏由 2 到 6 个人玩，使用除大小王之外的52 张牌，游戏者的目标是使手中的牌的点数之和不超过 21 点且尽量大。 有着悠久的历史。

Switch, also called Two Four Jacks or Black Jack, Irish Switch, especially designed for Windows Phone that is popular in the United Kingdom. Play against the phone and earn your medals! The game includes interactive hints that help you learn and perfect your game. Interactive rules and manual are included. This game features a unique original game engine that I started building in 1999. The objective is to get rid of all cards and win by score.

This game requires nerve, precision, and speed. Becoming frustrated or defensive leads to failure. Only the quick mind will win the game.