I remember my dad playing this game! He was a master of spreadsheets and 4GL databases!
I wonder if you could make an MMO with Google Sheets today?
Somebody much more skilled and ambitious than I am once made a working spreadsheet version of the board game Puerto Rico, complete with AI opponents. I think it's still floating around, but it uses macros, so you get all the warnings associated with that.
This appears to be the website of the author: http://edugames.com/edugamesWebSite/home.htm
There's an email there you might reach out to, to see if you can get the full version