? Having more people coding (obviously people knowing what they are doing) would speed up the progress, making a game on your own is hard as fk... and no using the right tools and having more people contribute in finding bugs speeds up the process. Trust me coding alone might seem "better" but when you are working on a big project it's impossible. They could do some tutorials on building the game (unity stuff) but coding requires time and experience so I don't think that is possible unless there are some people who are experienced in coding who want to help and have time (obviously if the developers want to share their code). 

Anyways that's enough for me, I just wanted to give you an insight and maybe see this game completed one day.

Hello found the game the same way because I always dreamed of a game like this :p