Talking about a pretty popular and useful concept: Save Codes! Hope this helps someone. Please share if you think this was helpful! Examples of Projects with Save Codes: Recording Piano https://scratch.mit.edu/projects/362460808/ Maze Maker https://scratch.mit.edu/projects/393431194/ Many of Griffpatch's games https://scratch.mit.edu/projects/60917032/ Also check out the wiki: https://en.scratch-wiki.info/wiki/Saving_Data Music Credits: Windless Slopes by Allan Oliveira