Click the green flag. Then press space to generate random scenes. Press A to see what happens if the transition does not use "broadcast and wait"
This project demonstrates the use of "broadcast and wait" blocks to make sure that transitions between run smoothly, even if we have to do a time-consuming process to generate the scene. I made this to help illustrate a suggestion I had for @shadowspear1 regarding Pixel Legend: http://scratch.mit.edu/projects/13543391/