一个字母游戏选择菜单，里面有多个选项，有“选择游戏难易等级”，它可以通过控制字母下降的速度，游戏总时间及没行字母的个数来控制游戏的难易程度，按回车键进入另一个界面选择等级，有容易，一般，较难，很难四个等级，按上下功能键进行选择，按回车键选定，之后有提示游戏者是返回菜单进行其它选择还是直接开始游戏，按r键返回菜单，按s键开始游戏。-Letter of the game selection menu, there are several options, the " select the game difficulty level" , it can control the pace of decline letter, game time and did not line the total number of letters to control the game' s difficulty level, press Select the Enter key to enter another interface level, there are easy, normal, difficult, difficult four grades, according to the up and down function keys, and press the Enter key to select, then the player is prompted to return to the menu selection or other just start the game, press the r key to return to the menu, press s to start the game.