I don't know how helpful this is, but you might like to work through these kid focused projects with him, so at least he has some idea about game development.

I don't know how helpful this is, but you might like to work through these kid focused projects with him, so at least he has some idea about game development. https://projects.raspberrypi.org/en/collections/unity https://projects.raspberrypi.org/en/collections/unity