Introduction - If you have any usage issues, please Google them yourself
A total of 4 off the game, from easy to difficult, are the beginning of each off, key handling, reset and exit the function. (1) initialization, including initialization and every screen, the initial level, the screen is initialized to 80 pixels wide, 25 pixels high. (2) key villain and handling including moving boxes moving by moving up and down keys to control the movement of the villain, thus promoting the box to push the box to the specified destination clearance. (3) Each level can be reset, press the space bar to reset the current off. (4) Press the Esc key to exit the game at any time.