I can't say anything about it because non-disclosure agreement. But it's by the people who do City Of Mist (I think I'm allowed to say that) and it was quite fun and interesting.
(Tangent about NDAs:)
(I know it's pretty standard wording for NDAs but there's something quite funny and also quite dystopian about signing something that basically says 'we are going to tell you some stuff (hereinafter "the Stuff"), you won't know what the Stuff is until we tell you the Stuff, but we won't tell you the Stuff until you've promised not to tell anyone else the Stuff, also even after we've told you the Stuff we won't specify in any detail which parts of what we told you was the Stuff, so you essentially have to promise to keep a secret without knowing, either before or afterwards, what the secret is'.)