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Best Online Casino Slots  

Online slots are arguably the most popular games at casino sites. There are plenty of reasons why players always choose to play slots when they register at a particular casino platform. First off, these games have straightforward gameplay. Once you’ve studied the paytable, all you must do is set your bet and spin the reels. 

The best online casino slots offer big jackpots, especially the progressive ones. There is also a tremendous choice of slot games, which can vary according to:  

  • Payline mechanic 
  • Theme 
  • Bonus features 
  • Number of reels  
  • Jackpot 
  • Volatility  

When you consider these options, you can see there are countless types of slots, so if you wish to play real money slots online, the gaming experience will never be dull. Finally, all of the best online casino slots are powered by the latest HTML5 technology, meaning they are optimized for mobile use. That makes them extremely easy to access and play on all devices.  

Best Casinos for Online Real Money Slots 

Of course, if you wish to play the best slots games, you must register at the best online casinos. The more reputable the casino is, the more secure and entertaining the overall gaming experience will be.  

Not only that, but the best casino sites also offer bonuses and promotions that you can claim and use on the best casino slots games. We are more than happy to help you find the top-rated sites, which is why we reviewed a plethora of casino platforms. 

After a thorough process, we’ve come up with the top candidates. 


Caesars casino offers hundreds of quality slots, all with unique gameplay and featuring numerous in-game bonuses. If you wish to play the best real money slots on this platform, you will have to register an account. It takes only a few seconds to fill in the registration details.  

After you successfully register, you gain access to many of the best online casino slots, such as:  

  • 88 Fortunes Megaways 
  • Reel Linking 
  • Lady of the Dead Deluxe 
  • Book of Slingo 
  • Silver Pride  


Betway casino has over 600 unique online slots that you can enjoy. Many of them are labeled as the best online slot games. Thanks to the variety, your gaming experience at this site will never be dull. Betway is powered by the 128-bit SSL encryption software, which means your private information will always be kept out of harm’s way.  

Golden Nugget 

When it comes to having the best slot payouts online, it doesn’t get any better than Golden Nugget casino. What’s more, Golden Nugget has a plethora of promotions that each registered player can claim. The slots section at this casino site features several sub-categories:  

  • Jackpots 
  • Megaways 
  • Slingo 

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Once you register and make your first deposit at DraftKings, you will have the chance to gain a 100% welcome match bonus that goes up to $2000. Free casino credits worth $50 are also on the table. DraftKings is mobile-friendly, utilizes the latest SSL encryption software that keeps players safe, and launches new slot games all the time.  

The registration process at this reputable casino site won’t take more than just a minute of your time.  

draftkings slots


BetMGM is among the most reputable US casino sites. Even though this platform mainly focuses on sportsbook services, it also has a dedicated casino section where you find many of the best slots to play. Some of the providers that have supplied BetMGM with quality titles include:  

  • Ainsworth 
  • NetEnt 
  • Red Tiger 
  • DGC  

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Each of these slots comes with a variety of in-game bonuses. BetMGM also offers several bonuses and promotions that can be used to boost your rewards.  

Best Online Casino Slot Games 

Now that we’ve taken a look at the best casino sites, it is time to uncover the best casino slots to play. Below, we’ve listed the top three online slots based on their rewards, features, graphics, and mobile compatibility.  

Book of Dead  

First off, we have Book of Dead, one of the most popular and most legendary slot games by Play’n GO. This title is among the best online slot machines because its RTP rate is above the average, and it has a few interesting bonus features.  

Book of Dead’s RTP is 96.21%, and this game has a high volatility rate. The grid features 5 reels and 3 rows, and to form a winning combination, you must land at least three identical symbols on the ten paylines. Bonus features here include: 

  • Free spins 
  • Expanding symbols 
  • Wild symbol 

Buffalo Rising Megaways  

Next up, we have Buffalo Rising Megaways, the top-rated Megaways-powered slot. This title is developed by Blueprint, and there are up to 117,649 ways to win on each spin.  

The RTP rate of Buffalo Rising Megaways is 96.50%, and the volatility rate is medium. You will also be pleased to know that there are quite a few interesting bonus features here, including win multipliers, cascading reels, free spins, and Mystery symbols. You can also purchase free spins with the Bonus Buy feature. 

Mega Moolah 

Finally, we have arguably the most rewarding slot game in history. The progressive jackpot is the reason why Mega Moolah is considered by many to be one of the best slots games to play. It is developed by Microgaming, and its maximum jackpot exposure often exceeds millions of dollars.  

So far, the biggest payout of this title is around $20 million. Even though the RTP rate of this game is significantly lower than a majority of slots (88.12%), the massive jackpot is the reason why so many players, especially high rollers, are keen to try it. 

Best Online Slot Sites 

Because online slots are the most popular casino games, many platforms decided to shift their full focus to these games and away from traditional casino table games. Slot sites feature tons of quality slots by many of the world’s most reputable providers, and if you are looking for the best online slots for real money, these websites are a perfect choice. 

Below, we’ve listed some of the best slot sites on the market, so let’s have a look at them.  


As a slot site that is available in over 100 countries, you can rest assured that Unibet’s reputation is unmatched. This platform offers a tremendous welcome bonus, but it also has a fantastic array of online slots to enjoy. You can play both classic and video slots, jackpot slots, and Vegas slots on this platform. Some of the most popular picks are:  

  • 9 Blazing Diamonds WOWPOT 
  • Sherlock and Moriarty Wowpot 
  • Book of Dead 
  • Legacy of Dead 
  • Big Bass Bonanza  


FanDuel is one of the most popular operators in the US, and the diverse slot section is one of the reasons why. You can enjoy some interesting titles on this platform, like Divine Fortune, Fortune House, Gonzo’s Quest Megaways, and Joe Exotic.  

Even better, you can claim several bonuses and promotions such as Sunday Slots Bet & Get, Deposit Bonus Monday, Rapid Rewards, and Saturday Deposit Bonus.  


Next up, we have WynnBet, a popular platform that focuses on featuring the top online casino slots. There are hundreds of titles to choose from here, and if you wish to play them for real money, you just need to register an account. 

As for the bonuses, you can claim promotions such as the New User 100% Deposit Match Bonus up to $1000 and the Game of the Week. 


Apart from being known as one of the most popular land-based casino sites, Borgata also has its own slot site where you can enjoy many well-known slots. The welcome bonus at this platform features a 100% match deposit that goes up to $1,000 as well as a free $20 on sign-up.  

Space Invaders, Divine Fortune, Starburst, Guns’N’Roses, Temple Fire, and Dragon Power are just a fraction of the most popular slots that you can enjoy for real money once you register an account here.  


Finally, we have BetRivers, a reputable US platform that offers much more than just slot and casino gaming. Registering an account here won’t take more than just a minute of your time, and the welcome bonus will reward you with up to $250.  

Some of the providers that have supplied these games are:  

  • Red Tiger 
  • Pragmatic Play 
  • NetEnt 
  • Every 
  • AGS 
  • Inspired  

Most Popular Online Slots for Real Money  

Now that we’ve shared all the details about the best slot sites, it is time to unveil the most popular slots that you can play for real money online. These games are known for being entertaining and accessed by thousands of slot fans each day. Let’s check them out.  

Immortal Romance  

Immortal Romance is considered one of the most popular slots, but it is also viewed by many as one of the best online casino slots. Microgaming developed it, and its maximum jackpot exposure goes as high as 12,000x the stake.  

To form a winning combination, you need to land three matching symbols, and there are 243 ways to win. Some of the in-game bonuses include:  

  • Free spins 
  • Wild Rules 
  • Wild Desire 

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Next up, we have Starburst, which is the most popular release by NetEnt in the provider’s history. This title has a low volatility rate and a 96.09% RTP. It was released in 2012, and thanks to its dynamic and interesting gameplay, it remains a popular choice to this day.  

There are 5 reels and 3 rows in Starburst, and bonus features in this game include Wilds, Win Both Ways, as well as Respins. 

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Bonanza Megaways 

Finally, we have Bonanza, a well-known slot by Big Time Gaming. Thanks to the Megaways mechanic, you can expect up to 117,649 ways to win on this title, and what’s even more impressive is the fact that there are several interesting bonus features such as free spins and win multipliers.  

The RTP rate of Bonanza Megaways is 96%, and if you are playing this game for real money, you can set your bets as low as $0.20 and as high as $20.   

bonanza slots

Frequently Asked Questions 

Are Real Money Online Slots Legal in the US? 

Currently, there are five US states where you can find the best slots to play online and enjoy them legally – New Jersey, Michigan, Pennsylvania, West Virginia, and Delaware.  

How Do Welcome Bonuses Work? 

Welcome bonuses are only available to newly-registered players at online casinos. You must make your first deposit to claim them, and if you wish to withdraw winnings made with the bonus, you must meet the T&Cs.  

Is It Safe to Play Online Slots for Real Money? 

If you register and verify your account at a licensed and regulated online casino, then you are free to play online slots for real money as these casino sites utilize the latest SSL encryption software.  

How Do Online Slots Work? 

Slots feature many paylines on which you can form a winning combination. Before you can spin the reels, you need to set your preferred bet. To ensure fair play, providers power them with Random Number Generators, which create random outcomes.  

Can I Play Slots for Free? 

Yes, there are certain sites and online casinos where you can play the best online casino slots for free.  

Which Online Slots Have the Best Payouts? 

Online slots that have the best payouts are those that have a high RTP rate and a high volatility rate. You can check out RTP on the paytable information screen or search online.  

Can I Play Real Money Slots on My Phone? 

All of the best slots to play online are powered by the latest HTML5 technology, which means that you can play them on your phone. 

What Is the Best Online Slot Site? 

Determining the best online slot site is difficult as personal preferences play a huge role. However, we’ve listed the top five slot sites according to their features, and all of them offer a safe and entertaining gaming experience.  

Slots's Features

Discover the best online blackjack casino site in our extensive guide. Read now and make sure you claim your welcome bonus.



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