Over the years, the universe of online slots has greatly diversified, many new games have appeared. Machines that often paid out a large number of small prizes gradually gave way to a plethora of slot machines that are distributed have much larger wins, even if they are rarer. Currently, Zodiac Casino biggest payouts come from progressive jackpot slots, which have made some very lucky, life-changing prize winners happy in recent years.
If you're looking for slots capable of giving out millionaire prizes, keep reading our list of the top 6 highest paying slots.

6 Gene Millionaire
Obviously Millionaire Genie is not limited to winning the mega jackpot, but in its offer it includes free spins, side games and small jackpots that pay out up to 500,000 euros. All these features make it one of the most profitable slots on the market.
5. Book of Ra
Book of Ra is the first exciting installment in producer Novomatic's saga, and its sequels include a large number of titles that have expanded its story. It is undoubtedly one of the most popular slot games, not least because its version is available in most physical slot machines around the world. After rewarding players from the four corners of the earth, the benevolent Egyptian God turned his eyes on our local players and in 2016 rewarded a lucky Roman user with €480,000 of his Mega Jackpot.
4. Avengers
Marvel-inspired slots are among the most loved by players and are also particularly generous. In particular, The Avengers has 4 unusual progressive jackpots that can brighten up the future happy days of the winners. The Power Jackpot, Extra Power Jackpot, Super Power Jackpot and Ultimate Power Jackpot are 4 tools that will allow you to win prizes that easily exceed 200,000 Euros.
In addition to these rewards, there are many special features available in the game, such as: free spins, the Wall of Heroes side game, and an exclusive free spins feature specific to each of the various Avengers components. If you like superheroes, this slot is definitely for you.
3. Mega Fortune
It is one of the most successful slot games developed by NetEnt, a famous Swedish slot machine manufacturer. The main theme is the luxury evoked by objects and icons that symbolize unbridled wealth, such as limousines and yachts. These images are not placed here by chance, but they point to the fact that if you win in this online slot, the rewards received can make us live a comfortable life and no longer worry.
Over the years, Mega Fortune has raffled off many prizes for millionaires. In fact, the highest win on the slot machine came from Mega Fortune: in 2015, an English player, kissed by luck, managed to win a prize of 13.2 million pounds (about 15.4 million euros) thanks to a single spin of 25 cents.
2. Monty Python spamalot
Monthy Python has created successful comedy series, several musicals and films that have become legendary throughout their history. Their creations are inspired by Monthy's Python Spamalot slot, where the main theme of the game is the quest for the Holy Grail. This slot is known in England for often topping the £1 million jackpot, and also in Italy for often handing out very large winnings. Among the slot machines created by Playtech, Monthy's Python Spamalot is the one that has won the highest prize: the Holy Grail jackpot of approximately 1,700,000 euros.
1. Mega Moolah
The undisputed champion of progressive jackpot slots is definitely Mega Moolah. This game virtually guarantees anyone who wins their "mega jackpot" to become a millionaire. The Mega Moolah mega jackpot on online slot sites often exceeds 2 million euros.
Like Marvel slots, there are also multiple progressive jackpot prize tiers. Three different tiers are available: Mine jackpot, Minor Jackpot and Major Jackpot, with expected prizes ranging from a few hundred euros to several hundred thousand. In addition to these main prizes, the game has an additional jackpot that pays out up to 15,000 coins; this means that there are 4 different jackpots available in Mega Moolah that can delight users with fantastic prizes.
As a reminder, two of the biggest wins in history have gone to Mega Moolah, which awarded a young Swede in his thirties on November 28, 2015 and another lucky New Zealander in June 2016 with jackpots of €8,577.20 and €6,200,000 respectively.