“贪吃蛇”是一种很流行的电子游戏。一条蛇在棋盘的格子平面上爬行，有键盘控制其转弯 格子上随机出现5个数字（1—5），当蛇的头部撞击数字时会将数字”吃掉“，蛇的身体会变长。当蛇的头部撞击障碍物（深色部分）或自己的身体时，游戏结束。游戏结束时，蛇身越长的分数越高-" Snake"　is a very popular video games. A snake crawling on the board of the lattice plane, has a keyboard to control its turn　lattice random 5 numbers (1-5), hit the snake' s head figures, figures will " eat" , the snake' s body will become long. When the snake' s head hit obstacles (dark part) or your own body, the game is over. End of the game, the higher the score the longer the snake