Hi there, I'm posting here because it's more underground compared to Reddit (since I think that the dev wouldn't like it to get mainstream attention).
There is an open-source WC3 engine called Warsmash (made using LibGDX): https://github.com/Retera/WarsmashModEngine
( Discord server: https://discord.com/invite/ucjftZ7x7H )
I thought I might share it here, if anyone is interested in participating in its development. There isn't a Flatpak version yet and it also misses some features e.g.
OPEN THE FLOODGATES!
Really though, there's a difference between "not wanting people to know about it" and "not wanting it to randomly trend on Reddit and get a bunch of attention from hundreds of people for no good reason". Then again, I have no idea if that would be a realistic outcome with the Reddit Linux Warcraft III community. Better safe than sorry I guess. :)