用手指猛击信封中间位置的邮戳从而开始游戏，玩家用手指控制那个正下方的字母，与其它一个相同的字母碰撞，可以让字母升级，升级规律是从 “Z” 到 “A”，如果碰撞到不同的字母玩家就失败了，让玩家控制的字母的等级升到最高 “A” 级是所有人追求的目标！这个游戏可以锻炼人的眼睛的敏锐度喔！
At first , players must click postmark what be located the middle of envelop fiercely . This game have 26 levels . The lowest level is " Z " level , and the highest level is " A " level .
So the second , players must improve level by controlling letter what be located the bottom of screen to come across with the same letter . Failing that , players will be failures .
Playing this game can make players' eyes more acute .