Sorry claster2013 but I have to agree with Tire burnout. Your scene needs a lot of work before it can be classified as a game. I suggest that you spend some time playing other people's games here on Algobox. Try to figure out how their games work. Ask questions. Most people wouldn't mind if you ask them questions by leaving comments. For example, you can ask something like, "How did you make that circle move with the arrow keys?" It takes a lot of time to learn how to make things move and to behave the way you want them to behave. The more time and effort you put into learning Algodoo, the better and more impressive your scenes will become! Failure is not always a bad thing because it's almost always a learning experience which is a good thing!