Role Playing Gateway [1] may be the closest thing you'll find online. It has shared universes and players creating their own characters and writing short storie

Role Playing Gateway [1] may be the closest thing you'll find online. It has shared universes and players creating their own characters and writing short stories about their journeys and taking actions. It’s not quite an MMO since it’s not real-time and much of the interactions aren’t mediated by programs enforcing rules. This and the OP's example might actually be closer to a form of literature, but one that is semi-interactive and non-linear. I've been keeping a list of digital examples of this [2] but perhaps I should start an offline list, too! They claim to have been running for 20 years. [1] https://www.roleplaygateway.com/ https://www.roleplaygateway.com/ [2] https://www.jamesyu.org/hyperliterature/ https://www.jamesyu.org/hyperliterature/