Character Capital

A play stock-market website that, instead of treading real stock with real money, players start off with a certain amount of in-game currency to trade character stocks like $MCKY or $GRU! Random fluctuations occur, news such as 'Minions go on strike!' affect stocks (Gru's stock plummets). There are 'prediction markets', where players guess what will happen in a new movie/book drop (will Spiderman defeat Doc Ock?) and earn rewards based on that.