When this happens in Factorio, the game pauses, one player (the server?) saves the game and sends it to all other players who load the savefile and the game resumes when that's done. It's not a nice experience, but it's a lot better than "you can't play today, goodbye!"

Same with RA2/YR.

All it took was for some salty player to activate a trainer or prez IFS and kill the game.

I like that the lobbies were ran over IRCd.

Dreamforge IRCd with the server password being "supersecret".