Online betting companies are kicking off a Super Bowl ad blitz

Gamblers place bets in the temporary sports-betting area at the SugarHouse Casino in Philadelphia on Dec. 13, 2018. An estimated 17.6 million people are expected to place a bet on Sunday's Super Bowl online or in person at a sportsbook.

Matt Rourke / Matt Rourke

It’s not just the office pool anymore. More than half of U.S. states now allow legalized sports betting, and in many cases it’s as easy as opening an app on your smartphone and making a wager.

A whopping 17.6 million people are expected to place a bet on Sunday’s Super Bowl online or in person at a sportsbook, according to the American Gaming Association.

It’s not all profits for the operators, though. Sportsbooks are putting up their own money in the form of a massive advertising campaign targeting the millions of sports fans who will be glued to their TVs for the matchup between the Los Angeles Rams and the Cincinnati Bengals.