CMD模式下打字游戏，有四列随机数字下落，数字的首字母不相同，从键盘上键入对应的数字即可消除对应列，如果输入错误请在输入对应数目后输入正确的数字即可，任意一列数字落到屏幕底部游戏结束。注明：输入不支持小键盘，等级越高随机数越长，下落速度越快。-CMD mode, typing games, the whereabouts of four random numbers are not the same as the first letter of the figures, from the keyboard to type the number that corresponds to elimination of the corresponding column, if the input error in the input corresponding number to enter the correct number can be arbitrarily a number fell to the bottom of the screen the game is over. Specify: The keypad input is not supported, the higher the level the longer the random number, the faster the whereabouts.