what is game theory in the optimized lineup

trying to figure when and if to use game theory under advance settings in the nil Optimized lineup section

The number by a player or team is essentially a rating for how their predicted game should go for them based on matchup, Vegas, recent performances, and a few other miscellaneous factors. Clicking the Game Theory Model under the advanced setting will increase or decrease a player's projection based on that number. There is no specific time to use it, it's just one of the few models users can choose to change projections.