Csharp实现的一个俄罗斯方块游戏，键盘控制，可以自定义控制键。-CSharp achieve a Tetris game, keyboard control, can customize the control keys.

unity 摄像机挂载后，可用方向键进行漫游，两个脚本，一个是视角方向控制，另一个是移动控制(After the unity camera is mounted, you can navigate with the arrow keys, two scr ipts, one is the view direction control, and the other is the motion control.)