This is easily possible, although you may have to break away from the tutorials slightly. I've not brushed up on the manual in a while, but I believe that the way it works is to send the sprites position. However, all that is really required is to send the sprites y coordinate, then each player can be the left side, where the data incoming for the opponents y coordinate is just the coordinate for the right side. As for the ball in pong, the person who is not the host will have to mirror the position of the ball in a vertical line directly through the center.