Maybe you are a games developer and are overlooking the fact that people have to first learn the basic apis/models/etc. of graphical systems, engines, etc. before using them. Not sure how you are saying that it wouldn't take a few weeks to code even a simple production game like chess or more complicated but still simple Jump king etc.

Just think of the speciality in which you aren't an expert, javascript/storage/networking ...

I've dabbled and continue to dabble in areas where I know nothing about. And in this case, there's nothing super special about making a game.