How to setup: 1. Either take the alert and volume code from the backdrop and sprites or remix this project to continue. 2. Place it into any project. 3. If the user moves their mouse around the position of the remix button, this alert will be set off. It is one time per green flag click and trigger, then it will not show the message again until next trigger. 4. Feel free to customize it!
Look inside the backdrop and message sprite to know how to setup this system. Note that the message may be triggered by accident due to the limits with scratch's stage. This allows people to know (hopefully) that if they want to remix your project, they should make changes to it.