dang you built your own custom engine for this game? Did you by chance record any of that process? What made you decide to do that rather than just use an established engine already? I get you're probably an experienced programmer, but it leaves me curious. Are your future game projects using this same custom engine?
There are no records of the creation process as it is an amalgamation of several attempts over several years. I have used most of the mainstream game engines, but in the end I've always had more fun messing around in a web browser.
I recently posted on twitter another game I'm working on, it's a trpg that uses a similar base although the result is very different