Each scenario has 3-4 characters. There is a relationship matrix (character-to-character) and each turn this is shifted. The game interprets what happened, updates the relationship matrix, and determines whether the objective has succeeded or failed.
It’s free, works in the browser, and requires no account. I store the chats and telemetry.
I'm not sure how novel this is but I haven't found existing group chats convincing and wanted to experiment.