1. Click the green flag and give scratch permission to use your camera. 2. If multiple people are playing, decide who plays which color(s). Go fullscreen ! :D 3. Click the "start" countdown button. 4. Wave your hand (or move your body) in front of the sensor at the bottom of the screen that is your color ! :) 5. When your color reaches the finish line, if there are more colors than players, you can wave/move over the other sensors to help the remaining colors to the finish line ! :D
