7 Biggest Online Casino Wins of All Time

Online slots have produced some extraordinary jackpot payouts, including wins worth more than €19 million(CAD $28 million), though payouts on this scale are extreme outliers. Progressive jackpots are unpredictable, and a small bet doesn’t make a jackpot any easier to hit.

Biggest Online Casino Wins

1 – CAD $28.7 Million Absolutely Mad Mega Moolah

In April 2021, a Belgian player hit a CAD $28.7 million (€19,430,723.60) jackpot while playing Absolootly Mad Mega Moolah at Napoleon Sports & Casino, setting a new payout record for Microgaming’s Mega Moolah progressive jackpot network.

Absolootly Mad is an Alice in Wonderland-inspired version of Mega Moolah developed by Triple Edge Studios, and the size of the jackpot is the important part of the story—it was a rare progressive-jackpot trigger, not the result of a particular playing strategy.

2 – CAD $26.4 Millionon Mega Fortune

Mega Fortune produced one of online casino gaming’s best-known historical jackpots in January 2013, when a player at Paf won approximately CAD $26.4 million (€17.86 million) on NetEnt’s progressive slot. Paf still lists the payout as the biggest jackpot win in its history, a record that stood until Jon Heywood’s Mega Moolah jackpot narrowly surpassed it in 2015.

Read our Mega Fortune slot review for more about the game itself.

3 – CAD $26.4 Millionon Mega Moolah

Jon Heywood’s Mega Moolah win is one of the best-documented online jackpot records.On 6 October 2015, the British player won CAD $26.4 million (€17,879,645.12 / £13,213,838.68) while playing Mega Moolah at Betway Casino, a payout Guinness World Records subsequently recognised as the largest jackpot in an online slot machine game at the time.

The winning spin was made with a 25p stake. That’s an interesting detail, but it shouldn’t be interpreted as a strategy: progressive jackpot outcomes remain random.

4 – CAD $17.3 Millionon Arabian Nights

NetEnt’s Arabian Nights also produced one of the major progressive-jackpot wins of the early 2010s.A Norwegian player reportedly won approximately CAD $17.3 million (€11.7 million) while playing the slot at Betsson in 2011, making it among the largest online slot jackpots recorded at the time.

Arabian Nights became particularly well known for its progressive jackpot, although wins approaching this size were exceptional rather than normal outcomes.

5 – CAD $17.3 Millionon Mega Fortune

Mega Fortune appears more than once among the largest historical online jackpots.A Norwegian player reportedly triggered an approximately CAD $17.3 million (€11.7 million) jackpot while playing the NetEnt progressive slot, another example of how the largest progressive prizes can grow far beyond the amounts players normally encounter. 

The size of a progressive jackpot doesn’t make it more predictable—the eventual trigger remains governed by the game’s jackpot mechanics.

6 – CAD $11.6 Million on Mega Moolah

Canadian players have also appeared among Mega Moolah’s biggest historical winners.In November 2016, a Canadian player identified as Marcus G. won approximately CAD $11.6 million while playing Mega Moolah, making it one of the largest Canadian wins associated with the game at the time. The amount wagered or time spent playing shouldn’t be treated as a method for reproducing the result—jackpot wins of this size are rare events.

7 – Another CAD $11.6 Million Mega Moolah Win

Mega Moolah’s history includes several eight-figure Canadian-dollar payouts, which is why the game appears repeatedly on lists of major online casino jackpots.Rather than suggesting these wins make Mega Moolah easier to win on, they show what can happen when a progressive jackpot pool grows across a large network of players.

For more on how these games work, see our guide to progressive jackpots.

Why Does Mega Moolah Appear So Often?

Mega Moolah dominates this list because it was built around a networked progressive jackpot.Instead of offering a fixed top prize, progressive jackpots increase as qualifying wagers are made across participating casinos, which allowed Mega Moolah’s top jackpot to reach exceptionally large amounts before being triggered. 

That doesn’t mean Mega Moolah offered players better overall odds of winning money—a large headline jackpot and a game’s RTP are separate considerations.

Biggest Casino Wins Are the Exception

There’s an obvious reason these jackpots made headlines: wins this large are extremely rare.None of the stories above provides a strategy for reproducing the result—a player winning from a small stake doesn’t mean small bets increase jackpot probability, just as playing for longer doesn’t make a major win inevitable.

If you play online slots, treat them as entertainment rather than a way to generate income. Set a budget beforehand, avoid chasing losses and remember that even the biggest jackpot stories represent exceptional outcomes rather than the typical player experience.

You can find further information and support in our responsible gambling resources.