I got this idea from the betting from GTA online missions, if anyone has done those. I think the general idea for this plugin is before the game starts every bets $20 on the player they think will win. If the player they bet on wins, they keep the money. If the player they bet on loses, their $20 go to the winner. Not sure how well that will work in terms of the winner winning money or the economy of the game though. Maths is not my forte.