I am primarily thinking about making the game like I described here: Online multiplayer game, but only 1 player can play at a time?!

But there are some game design challenges there, so I am not so sure. I would still like to do something multiplayer, either:

• Chat-based: bot can control who can read the chat and who can write messages
• Document-based (I wrote Google-Docs in the title, because it's more well-known, but I will use Dropbox Paper since it's much better): bot can control who can read, comment and edit the document

I don't have any ideas though for these "game-media", beyond typical mafia-game based in a chat, which is not related to the theme at all.

Please share, if you have any ideas:)