@juan That is great!
We put you in the program with a talk and a challenge. Do you have a preferred date for your talk and challenge? Or should we fit you in? How long do you plan to run the challenge - everything between 2 hours and several days is an option.
Maybe of inspiration for you. There have been board game challenges in the global OSCEdays before.
(1) ‘Monopoly Hacking in HELSINKI 2015’
(2) On Circular Economy in CHENNAI 2015
(3) And a card game in OSCEdays PARIS 2016 (direct link)
But nothing on ‘self-sufficient city for 3 million people’ so far 