Magiilaro

Maybe delta chat could be the right thing? https://delta.chat/

It uses email technology to implement the secure chat

It is free on GOG too: https://www.gog.com/en/game/the_elder_scrolls_arena

Yeah, back then when I made my move from Windows to Linux I mostly did so because I wanted something complicated to tinker with, but I had to go to Gentoo to find a Linux distro that was more complicated then Windows. And that was nearly 20 years ago!