Press green flag to start and red stop sign to stop.Use the arrow keys to control the unicorn. If the unicorn touches the donut, you get a point (score in top left corner, labled donut score) and if the unicorn touches the dragon, deducts a point.
I did it at Pongos learning lab in Maryland. I was on a girl scout field trip. We all got taught how to make this, but we each got to make it our own.