My background is backend development with Java and Kotlin for the last decade. I have a little bit of HTML/JS experience but I'm not a pro. I would like to build a modern Sierra game, of sorts.

I have no problem investing the time, it just seems overwhelming to jump into and while I've looked at a couple of tutorials, I still seem a bit mystified by the process.

I'm interested in multiplayer design and function twofold, as I'm intrigued at both how to make it work efficiently and the reasons some game companies claim their game servers cost millions a month to run and have to shut them off (looking at you, Gun Media).