Well, first of all, I clicked to start the game, and since it said "1 player" I clicked again, but that apparently started a 2 player game. So, since there was obviously no way to go back to the main menu, I had to reload the page and sit through 20 seconds of ads...again. After that it was really hard to get the idea of what to do; I mean, the "instructions" say to hit the ball back by clicking, but I just couldn't do it. The computer got to 10 points against me before I realized I was clicking too late. After that it seemed somehow really easy. All in all, kind of a waste of time.