Remeber when I was a student, I always play some interesting flash game on an old PC. Even a small game is ever-changing, spent me much time to play it. Of course it was many years ago. In fact most of small game is built by some image and added necessay logic code. Of course we can’t miss another important part the keyboard control. Following is a tutorial about basic principle of flash game and how to control by keyboard. It is very simple and easily to be understand. It is the first article of the whole tutorials with code and Demo. If you are interested in it please visit following site.