I would do something similar the the present version, but emphasize that it’s a game, the stakes are low, and, while you shouldn’t destroy the homepage without reason, it’s not a big deal if you do. We don’t need to pretend that losing the homepage for a day is a disaster in order to get value from the game: I would happily risk the homepage for a day once a year to see whether it gets destroyed, and if so, why — malice, accidents, deception, bargaining failure (e.g., someone demands something to not destroy the homepage and their demand is not fulfilled), other coordination failure (in more complex variants), or something else.
Edit: also, I don’t get how the game can have much to do with trust as long as defectors are socially punished.
I would do something similar the the present version, but emphasize that it’s a game, the stakes are low, and, while you shouldn’t destroy the homepage without reason, it’s not a big deal if you do. We don’t need to pretend that losing the homepage for a day is a disaster in order to get value from the game: I would happily risk the homepage for a day once a year to see whether it gets destroyed, and if so, why — malice, accidents, deception, bargaining failure (e.g., someone demands something to not destroy the homepage and their demand is not fulfilled), other coordination failure (in more complex variants), or something else.
Edit: also, I don’t get how the game can have much to do with trust as long as defectors are socially punished.