DraftKings and FanDuel Lawsuit: Core Allegations

Plaintiffs allege the leading sportsbooks used app design patterns built to increase compulsive use, not informed decision-making. Claims focus on VIP tiers, personalized incentives, instant re-bet flows, and loss-chasing triggers.

Several lawsuits also cite internal tracking of high-loss users, sometimes called "whales," and targeted retention of those users after signs of harm.

As litigation grows, courts are being asked to examine whether these practices crossed from marketing into actionable misconduct.