Event Horizon

If everyone is murdered, it's the Narrator's victory.
If you identify and eliminate the culprit, it's the User's victory.

Every time a new chat room is opened, the culprit, victim, murder location, and method are randomized.

Read the list of 10 characters and write the name of the character you want to play in your persona to play. No other user settings are needed besides the name.

You can also play by adding your own user persona. Then there will be 11 characters.

Gemini 2.5 Pro (blue) model recommended.
If it's too low-level, the mystery feel is lost and the difficulty becomes too easy.
Tests were conducted with the most ordinary-looking intern, Tommy Watson.