Card Briefcase

Sixteen briefcases are placed in front of you. Each one hides a real sports card from our database with a different value. You pick one briefcase as "yours" and set it aside. Then you eliminate the others in waves — after each wave the Banker makes you a cash offer to buy your briefcase. Take the offer (deal) or keep going (no deal). At the end, you either walk away with the Banker’s last offer or open your briefcase and take whatever card was inside.

The Banker’s offer is a function of the expected value (average) of the remaining briefcases, adjusted by a psychological discount that starts low and rises as the game progresses. Early rounds the offer is a fraction of the mean (the Banker wants you to keep playing). Late rounds the offer approaches the mean as the Banker tries to close the deal. The discount also narrows if your briefcase is statistically likely to be a high-value card.

Yes. The Daily mode seeds the 16 briefcases from today’s date, so every player faces the same 16 cards in the same positions. Compare your final grade with friends to see who played the Banker best. Free play mode reshuffles every game.