Top 5 biggest online casino jackpot wins in US history

Which licensed operator has handed out the biggest online casino jackpot in United States history? For 13 years, state-regulated online casinos have offered no shortage of options, with thousands upon thousands of available jackpot casino games online. Slots have remained the centerpiece for online gambling. Specifically, progressive jackpot slots have paid out millions of dollars in prizes over the years. Here are the five biggest casino jackpot wins online at legal casino apps.

What makes progressive jackpot slots so enticing is that every user contributes to the overall top prize awarded, with a percentage of each spin getting thrown into the jackpot pool until it is claimed by one lucky winner.

In 2020, a New Jersey woman opened the BetMGM Casino app and soon became the highest-paid progressive jackpot player in US history. Just three days into her NJ online casino experience, Sherri W. decided to play Luck O' the Jackpot and spun on a $2 wager that ultimately landed her more than $3.2 million.

A year later, in 2021, that record was topped by BetMGM's sister online gambling platform. Also in New Jersey, Dori B. logged into her Borgata Casino account and noticed that the Colossal Jackpot prize had grown to $3.5 million. Feeling inspired, she navigated to the MGM Grand Millions slot with the belief that "someone is going to hit it," she said in a press release, "maybe it could be me."

Indeed, that was the case, as she turned a $10 spin into a then-record $3.5 million, which she planned on using to fund family vacations and volunteer work.

It took over three years before that Borgata winner was usurped from the top of the biggest jackpot win list.

In August 2024, a BetMGM Casino user chased after what quickly became the high-water mark in operator history. Playing Fruit Blaster, the New Jersey customer placed a $200 spin in hopes of positive returns. They got just that with a prize of over $6.4 million that still stands as a BetMGM Casino record.

By February 2025, Michigan online casinos claimed the No. 1 spot. Already packed with some of the best paying slots, DraftKings Casino watched as its top progressive jackpot continued to climb toward $9 million after it began at $1 million a year earlier.

On a simple $0.20 spin, a DraftKings user – who remains anonymous – took down the jackpot playing Irish Pot Luck to win $9.28 million and sit atop the ranking of top online casino jackpot winners.

Many of the legal industry's best mobile casinos offer progressive jackpot slots, with the possibility that any brand could crack this top five. But only one currently holds the No. 1 slot: DraftKings Casino.

Nine months after that Michigan player turned a $0.20 spin into over $9 million, another Michigander stepped in to steal the headlines.

Playing the Huff N' Even More Puff slot, a heavily popular title from Light & Wonder based on the Three Little Pigs, a DraftKings user put $0.20 on a spin. By that point, the progressive jackpot had reset and quickly climbed into eight figures. By the end of this November 2025 day, it would be reset again.

Why? Because that $0.20 wager resulted in a still-record and jaw-dropping $22.4 million for the still-anonymous player.

This list of the country's biggest casino jackpot winners at legal online casinos could certainly have new entries in the near future. 

Many of the best online slots, including Cash Eruption and Cleopatra, offer players a chance to win potentially life-changing prizes. So, too, can popular Megaways slots like Almighty Buffalo Megaways and Piggy 2 Riches Megaways.

In terms of where the largest progressive jackpots currently sit, here are the highest totals among licensed online casinos:

Interestingly, Hard Rock Bet Casino online has already made history of its own, paying out a platform-record of more than $1.9 million to a lucky New Jersey player in May 2026.

Feeling lucky or inspired to maybe take a shot at becoming part of this list of the biggest online jackpot winners? There are plenty of options available, and it's a simple process to get started.

Many of the top online casinos welcome first-time customers with unique bonuses. The Borgata Casino bonus code, for example, offers up to $500 in casino credits and up to 1,000 bonus spins after new users join and make a deposit of $10 or more.

From there, just choose an eligible progressive jackpot slot and be prepared to opt into the part of the game, which requires an extra but small contribution on each spin. As an example, say a player signed up with the DraftKings Casino promo code, they will need to wager an extra $0.25 on each spin to play for the top progressive jackpot.

Consider this, though: Paying an extra quarter for a potential seven-figure payday? Not a bad trade.

Bettors must be 21 years or older and otherwise eligible to register and place wagers at online casinos. If you or someone you know has a gambling problem, please seek assistance from trained professionals such as the Problem Gambling Help Network at 1-800-MY-RESET.

Grant Lucas