Comment by blooalien

Fantastic work for a 9 year old. If I had access to a computer at 9 I'm not sure I'd be making games so much as playing them. (Although I did move on from playing games to a healthy curiosity about how they worked "under the hood" fairly early on.) When he learns enough to have reached the limits of what he can do in Javascript, you should definitely look into the Godot game engine. Free/OpenSource, powerful, fairly easy to learn, tons of tutorials on YouTube, and even a game that teaches GDScript (their custom Python-like scripting language).