How did my 10 years old boy program aircraft game using MIT App Inventor

Recently one of my friend in the whatsapp group of my college alumni shouted a question about who can build a database using MIT App Inventor. Then i check this tool at google, i found that this is a tool designed by MIT so anyone can build apps.

I remembered two years ago my son(8 years old at that time) already familiar making a game using MIT scratch. This is somehow similiar with MIT scratch. So immediately i asked him to explore this tool or framework.

So he started to create new project, adding some layout design, adding player, and now he is still finding the logic which  he need to apply in the component named "block".

By watching some youtube tutorials, step by step he built the aircraft game. He searched the aircraft images from the google. Upload it to the MIT App Inventor website. So we do not need to download this tool to use it, it is an online programming tool.