this is very nice 
Here is some relevant content from the past years - other OSCEdays challenges that looked into Apps or games. Maybe some have useful information or are up for giving advice.
- Monopoly Hacking (With full prototype download) by @Jaana
- An Open Source Board Game On Circular Economy by @arvindchrn:
- OSCEdays Paris created a card game you can download ask @Tinou_de_Manioc
- Pukika - Create A Game of a City Running Circular Economy by @Juan - who definitely has made progress.
- And in 2016 @David was present on his journey to an app against climate change