So just for fun, I wrote a complete multiplayer game in pure C++. I even wrote my own texture atlas packer, which is now used by Assassin's Creed, 2 scientific publications as well as a drone manufacturing company - each of these basically mentions the name of my game. There is even a claim that Unity patented some of the ECS ideas that originate from this project. See https://github.com/TeamHypersomnia/Hypersomnia#tech-highligh... for details.By the way the game is pretty darn good. 10 people connected yesterday to test a new map:
https://www.youtube.com/watch?v=CHLPzZqANlM
It took me well over 10 years to code it all by hand, but the journey was truly worth it.