With 50 million Americans projected to bet $16 billion on the Super Bowl across legal and extralegal channels, it’s no surprise that sportsbooks were very active on Sunday.

GeoComply, which verifies bettors’ locations on behalf of legal sportsbooks, registered 100 million sports-betting transactions this Super Bowl weekend — a 25% increase from last year.

Several American sportsbooks reported milestones as a result of the increased traffic.

FanDuel averaged 2 million active users on its platform throughout the Kansas City Chiefs’ 38-35 victory over the Philadelphia Eagles, and was taking a record 50,000 bets per second at its peak.

DraftKings paid out $2.68 million to one bettor who wagered $1.68 million on the Chiefs’ moneyline.

MGM Resorts says it had the highest Super Bowl betting handle in company history for the state of Nevada, including money wagered at its nine retail sportsbooks on the Las Vegas Strip and on its BetMGM app.

“This was BetMGM’s most successful Super Bowl and most-bet-on single game sporting event ever,” a company spokesperson said.