Also I wonder: is there any place, where people can read the full source code, or submit their pull requests? And which license you picked for that? MIT or something else? Or maybe it is just some hosting, with a bunch of JavaScript files, and you don't use any version control system like Git?
As much as I love open source software (and I really appreciate your enthusiasm 
), I am interested in monetising this game (like on Steam, or through purchase on my website) down the line and so I will keep the code closed source. That said, you’re totally welcome to peek under the hood, prod through it, read what is there and experiment however you'd like, however, I do respectfully ask that nobody copies, distributes or modifies it.
If I ever decide to open up parts of the project in the future, I’ll be sure to announce it properly.