click the objects, try to avoid the rocks (they dock your score) If you are sensitive to flashing colors then this project might not be for you but I will be coming out with a normal one for those of you color sensitive folks! :)
Thank you so, so, much to https://projects.raspberrypi.org/en/projects/balloons/8 for the idea! you can copy and paste the web address and they have plenty of other projects to do on Scratch!