Monetization of the game "Heroes of Might and Magic 2, 3, ..."

Haven't you heard about the vcmi project?

Forum
https://vcmi.eu

Slack channel
https://h3vcmi.slack.com/messages/C2J9QFUDS/

Source code
https://github.com/vcmi/vcmi

Daily builds https://builds.vcmi.download/branch/develop/, including for Mac
https://builds.vcmi.download/branch/develop/macOS/

But for now, it's all in a deep alpha stage :D

I saw it. But in my opinion, the focus is more on creating new Castles than on bringing the Multiplayer to a working state. That's probably why it's in a deep alpha. Although, I haven't looked into it much; I don't know C++.

https://tonsky.livejournal.com/319591.html
Here's a good article about what heroes need to be to be successful.