Today, a video appeared online of a game called StoneHearth, which is currently in open Alpha.

The video is about adding multiplayer functionality to this (originally) singleplayer game.
'Tony' is a hero! Because he initially designed the singleplayer game according to a strict client-server model, adding multiplayer is now a piece of cake. Good thinking there.
The structure of the game even made it harder for developers to hack around it, than just to follow the model. That is awesome. Kudos to Tony!

https://youtube.com/watch/...