For example: Politics => "who will win the 2020 US presidential election?"
Economics => "will the SP500 close above 3500 on July 31, 2020?"
Sports => "who will win the 2020 UEFA champions league finals?"
Etc.
The questions will be indisputably answerable after a certain date. Players can submit their predictions in varying forms such as "yes/no", "Trump", "Trump 30% / Biden 70%", etc. Predictions can be updated until a preset deadline.
Players can wager points and receive payout points for each question. Players will be ranked according to their predictive ability. Rewards will be given out every quarter to the best performers in each topic.
Anyone is welcome to play including casual news junkies, hardcore sports fans, and data modelers.
I believe this game can become a fun way to encourage accountability and transparency for predictions.
Most people here probably would not believe mass will and focus alone can manifest things spontaneously, but an app like this would be pretty definitive on that front. It's also potentially a good hook to get people to try it, and might lend itself easily to gamification that isn't technically a prediction market.