Stories about the lucky ones who hit the jackpot excite the players. Many managed to raise the minimum bid to several million. The biggest online casino winnings are in the Guinness Book of Records. Our editors have collected information about large drifts and successful clients.
10 Biggest Online Casino Wins
The first mention of gambling dates back to the II century. BC. But the peak of the online industry began about 20 years ago. Since that time, thousands of casino users have become owners of huge rewards. Many of them have been happy with progressive jackpot slots developed by Microgaming and NetEnt.

Microgaming’s Mega Moolah slot machine became the record holder in terms of payout volumes and frequency. He owns the 3 biggest payouts:
- €18.9 million was ripped off by an anonymous player. The record was set on September 28, 2018 and issued in a single payment. The client bet 75 cents on a mobile device. For a long time, the winnings took the first place in terms of size among all the jackpots issued in online casinos.
- €17.87 million received at a rate of 25 cents. The British soldier became the owner of the sum in just 7 minutes, he made about 25 rotations. Kush was hit in 2015 and immediately got into the Guinness Book of Records, exceeding the previous one by 17 thousand. Despite a small difference, Microgaming outperformed its main competitor in the gambling entertainment market, the Swedish developer NetEnt.
- €14.2 million raffled in August 2020. At that time, the user became the 8th millionaire over the past year thanks to the well-known Microgaming network. The player decided to remain anonymous lucky.
Microgaming’s progressive jackpot network has given out €1.3 billion all the time. More than 550 players have received from €10 thousand on slots connected to the accumulative payout system. And 75 people became millionaires.
The second biggest payout is NetEnt’s Mega Fortune slot. More than 10 users became the winners of the largest awards, but the following were included in the top 10:
- €17.86 million was received by a 40-year-old resident of Helsinki in January 2013. The biggest casino win in the world, which got into the Guinness Book of Records. The jackpot has been considered the largest in size for more than two years and still remains one of the most sensational.
- €11.2 million issued in 2011. The winner of the payment was a 20-year-old Norwegian who came home from a nightclub and could not sleep. He received the winnings from the bonus money earned by free spins.
- €8.6 million received in the mobile version of the slot machine. A 30-year-old lucky man from Sweden turned into a millionaire by betting €1.50 on a spin. The event took place in 2015, while earlier the slot gave out €4.5 million.
Also in the list of top winnings are:
- €19.4 million was received by a Belgian who spent his leisure time playing the Absolootly Mad: Mega Moolah slot from Microgaming. The jackpot was broken in April 2021, so it became a record for the entire existence.
- €17.5 million was received by a user who placed a bet of €0.94 in the Book of Atem slot. It is connected to Microgaming’s WowPot network. A resident of the UK became its owner in April 2021.
- €8.1 million is the first big win in Blueprint Gaming’s jackpot history. It was issued by the Deal or No Deal machine, which is connected to the Jackpot King network, in April 2021.
- €7.5 million in the slot Hall of Gods from NetEnt was received by a 47-year-old Norwegian in 2017. Also, this device issued several more equivalent payments.
The information is current as of mid-2021. Perhaps soon the world will hear about a new busted bank that will break current records.

How the prize bank is formed
Large winnings are formed with the help of bets made by online casino customers. They are connected to the unified progressive jackpot network of the company. The developer may have several payment options. Each progressive jackpot slot has a certain percentage of deductions from the amount wagered per spin. There are also different conditions for issuing the main prize:
- Randomly during regular spins.
- When activating the bonus game.
- During free spins.
Using the example of Microgaming, which has long become a leader in the frequency of jackpots, you can understand the procedure for forming a prize bank. The famous Mega Moolah series has made many players millionaires. How is the procedure for filling the pool:
- For each of the four jackpots, a certain amount is reserved from the bet.
- The slots of the series are connected to a single system, so the pool is replenished automatically.
- After the drawing of the main prize, the amount is reset to the initial one.
- The provider pays the user a reward.
The popularity of the slot affects the rate of accumulation of the prize fund.
Mega Moolah | Wow Pot |
---|---|
Founded in 2006. 7 machines are connected to the network. The maximum win was €19.4 million. | Launched in 2020. Accumulates from 6 slots. The biggest jackpot was €17.5 million. |
Progressive jackpots are paid out by the manufacturer, so the player receives them in a single check. Many developers organize cumulative reward networks to attract more users. But they failed to overtake the market leaders.
The NetEnt company has 8 machines connected to the network, while the provider decided to get by with one big win. The developer did not use several options, so the slots are included in the top list.
Local jackpots are played in one casino. Typically, such awards operate in land-based establishments and are issued more often. Companies that own several casinos at once can combine prize banks. At the same time, the maximum payouts usually range from $10,000 to $100,000.
The Megabucks slot machine installed in the Excalibur casino (Las Vegas) gave the 25-year-old software engineer $ 39.7 million. The event took place in 2003. In 2000, the waitress Cynthia took the jackpot of $ 34.5 million. The record was broken three years later.
Fixed maximum rewards rarely reach half a million. They are paid by the operator, and cases of their issuance are more common. At the same time, the prize bank does not depend on the number of bets made and the popularity of the slot machine.

Online Casinos With the Biggest Winnings
Each user can get the biggest winnings in the casino. The editors have compiled a list of sites that provide comfortable conditions. Players can find famous slots with multi-million dollar jackpots and place a bet. The rating includes operators with a good reputation and a profitable bonus policy. High withdrawal limits allow you to easily get big winnings.
Criteria for choosing a generous casino
If the user intends to compete for the jackpot and become another chosen one of Lady Fortune, it is necessary to take seriously the choice of a gambling site. The following recommendations will help you find the best casino:
- Legitimacy. Checking that the operator has a license, as well as its relevance, is the first step that the player must take. Information is presented on the main page (at the bottom), and on the regulator’s website you can find data on the authenticity of the documents provided.
- Honesty. The user can study the rules of the casino even before registration. If the information is accessible and understandable, then you should create an account. Another criterion is service. When contacting support, managers must clearly and quickly answer the questions posed.
- Reputation. Feedback from other players is important. It is worth looking at forums and websites for information about the selected casino. User opinions should be predominantly positive, only in this case you can proceed to the next paragraph.
- Diversity. Customers are interested in the choice of slot machines, as well as the opportunity to bet in popular slots. Companies with large networks of funded cash payments cooperate with reliable operators. If the lobby contains software from providers that issued multi-million dollar jackpots, this is another plus.
- Financial security. A large selection of payment methods and high limits for cash transactions indicate that large casino deposits are paid out. It is necessary to take into account the presence of commissions and additional conditions for the withdrawal of jackpots.
If the operator meets all the criteria, then after registration, verification should also be completed. This will avoid misunderstandings when withdrawing winnings in the future.