This is a pong game. Your goal is to get 500 points. In order to get points, you have to bounce the ball off of the pencil. It seems like it will take a long time, but it should go by pretty fast because it is sort of fun. If the ball touches the red line at the bottom, the game is over. If you get 500 points, you win. In order to move the pencil (paddle), you move your mouse from left to right. The ball will automatically bounce off of it, so you don't have to worry about that. I hope you have fun :)
I made this by myself in about an hour. The sprites and backdrops are all made by Scratch (the website I used to make this game). The code is all done by me, although I used a part of the tutorial to get me started.