Most Popular Slot Machines of All Time


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Anyone with experience in a casino, whether online or land-based, can understand the thrill that comes with playing a slot machine. The lights, the sounds, and the graphics create an experience, unlike any other casino game. It’s no surprise that a major portion of a casino’s revenue is derived from slot machine games.

People have enjoyed slots for decades, and while the variety of slots available is part of their appeal, there are several that stand out as the greatest, most popular slot machines of all time.

Wheel of Fortune Slots

Wheel of Fortune remains one of the most popular games created by IGT. IGT, International Game Technology, is a multinational gambling company known for its slot machines and other gambling technology. Wheel of Fortune was introduced to casino-goers in 1996 and was an almost immediate hit. Since then, it has remained a favorite among slots players.

What is it about Wheel of Fortune Slots that has made it such a big hit? Perhaps it is because the popular game reminds players of the long-running TV show. Wheel of Fortune has been on the air for so long that there are likely many memories involved for the players that enjoy it. Additionally, many versions of the game, including online versions with various details, have been released, adding to the appeal of the slots game. With the right casino bonus, you can get free spins to get you started, so you can experience the famous slot game for yourself.


If Wheel of Fortune isn’t the most popular slot machine developed by IGT, then it’s because Cleopatra has earned that title. Alongside Wheel of Fortune, Cleopatra is a slot machine game that proved IGT is one of the best in the business when it comes to creating slot machines guaranteed to be a hit.

Whether played online or in a brick and mortar casino, Cleopatra is an ancient Egypt-themed slot that provides hours of entertainment. Players especially enjoy triggering free spins or bonus rounds multiple times during gameplay. Although there are several variants of this game now available, it’s the original that has proven time and time again to be one of the best in the industry.


No conversation about popular slot machines would be complete without at least a mention of Megabucks. Megabucks, like Wheel of Fortune, was developed by IGT in 1986 and became the first wide-area progressive jackpot machine in the world. That means that no matter where Megabucks is played, all games contribute to the jackpot which is seeded at $1 million.

Megabucks is the slot machine responsible for paying out some of the biggest slot machine jackpots ever. One of the most notable was a jackpot of $39.7 million won by an anonymous software engineer at Las Vegas’ Excalibur in 2003.

Double Diamond

Double Diamond is another slot machine developed by IGT that highlights the popular treasure theme. Double Diamond first hit the casino floor in 1989 and proved to be just the beginning of several major IGT successes. The format is relatively simple, but it has proven to be not only effective but timelessly entertaining.

The name Double Diamond comes from the Double Diamond symbol that doubles your winning combinations. If you get three Double Diamond, you’re one of the few lucky ones to get the game’s top jackpot.

Several versions of the original have been released in the years since its introduction, including:

  • Double Diamond Deluxe
  • Triple Double Diamond
  • Double Diamond 2000
  • Double Triple Diamond Deluxe with Cheese

If you have the opportunity to play any of the above versions of Double Diamond, do yourself a favor and try it out. You will be surprised by just how long you can be entertained by a single slot machine.

Blazing 7’s

Blazing 7’s, also known as Hot Shots, is a progressive jackpot game developed by Bally. The number seven has always been a significant one for gamblers and superstitious people, so it makes sense that Bally would choose the number seven for its hit slot machine game.

There really isn’t much to the game itself, especially in terms of design and features, but it’s a classic slot machine that has earned recognition as one of the most popular of all time. Considering Blazing 7’s has been around since the 1970s, they are clearly doing something right.


In the world of online casinos, NetEnt is the go-to developer for hit games. Starburst is arguably NetEnt’s most famous slot game and if you have spent any amount of time in an online casino there is a good chance you have at least seen it. Many online casinos and affiliates offer free spin bonuses that are exclusive to Starburst, but you don’t need free spins to get started.

Starburst is a pretty straightforward slot machine game that makes it surprisingly easy to walk away from a winner. If you are super lucky, you may even see the words “super mega win” flash across your screen!

Mega Moolah

Mega Moolah is one of the newer slot machine games on our list. It was developed by Microgaming in 2006 and became a mega-popular slot machine in 2015. That year, Jon Heywood, a British soldier, won €17,879,645, one of the jackpots in history won in online slots.

As thrilling as it is to try for a chance to win a huge jackpot, it’s the entertaining theme of Mega Moolah that keeps players loyal to this particular slot machine. Instead of more traditional numbers and bars, Mega Moolah features a jungle theme with wild animals and African safari music.

Players enjoy taking advantage of the many unique features of Mega Moolah, including a wild symbol pictured as a lion and free spins appearing as a monkey. The bonus wheel that randomly appears allows players to spin for a variety of prizes including the Mini, Minor, Major, and Mega jackpots. The Mega jackpot is the biggest, progressive jackpot that has the ability to instantly transform you into a millionaire.