Credit to @ChachorroLouco234 (stage jingles) and @TheScarfedStickman (idea of TV stage). Here's a template for making a microgame in the AiW engine. There are many comments and other guides to help you understand how things work. Only here to browse microgames? Check out https://scratch.mit.edu/studios/3742763/, or even https://scratch.mit.edu/projects/547429549/remixtree/. Already familiar with the basics? Feel free to use the clean version. It removes almost all of the tutorial stuff: https://scratch.mit.edu/projects/604937932 The microgame inside is only for testing purposes. But if you like the concept, feel free to borrow it. Changing the art is fine, because it's just Scratch assets.
