I don't like the concept of wargames. We don't need war to do this, nor conflict.

I see this more as an astronaut training: it has to be a solution, at least in the mind of the person proposing the situation. It also cultivates a spirit to always search for a way out of the invident.

One rule we adopted is that when the responder doesn't know, they have to say it. Once it said, they need to say outloud what do they search. Then the focus shifts to the audience, they have to find 3 different ways to respond to what the responder is searching (to know or to do). It is hard and so far it balances well the dynamic (it is OK to not know, it is important to recognise we don't know, and it is funny to share how we can hack our way through the system (the 3rd way is pretty hard and is in general a hack)).

I now realize that perhaps I could write a blog post on this.

For links, see my response to the other comment.