This works just like the game Rock Paper Scissors, you simply select one of the options (rock, paper, or scissors), and then if you won you get a point, if you lost they get a point, or if you tied neither of you get a point. The objective, of course, is to win more time than they do. You are on the right side. There are five (sort of six) different difficulties. You can view the difficulty by pressing the "D" key. You can increase or decrease the difficulty with the up and down arrow keys. The difficulties range from one to five such that five is the hardest. If you change the difficulty to anything outside that range then it will always choose the same thing. Note: The computer does NOT cheat, it simply uses previous rounds and maybe a little bit of randomness to choose.