The Best Online Casinos for Real Money Slots in 2021

Today is your lucky day if you’re searching for the best online casinos that offer slot games for real money because we have just the sites that fit that bill. For the best online slots with jackpots, look no further than our top-rated recommendations featured in this post.

Rank Gambling Site Deposit Bonus Get Started
Las Atlantis
280% Up To $14,000 Visit Site
Wild Casino
250% Up To $5,000 Visit Site
Super Slots
250% Up To $6,000 Visit Site
BetUS Casino
200% Up To $5,000 Visit Site
Bovada Casino
100% Up To $3,000 Visit Site

What’s more, we will discuss the types of slots you will find at each site, focus on some strategies for getting the most out of your gambling experience, and some of the benefits to playing jackpot slots for real money as well as in free play mode.

If this sounds exactly like what you’re looking for today, check out our favorite real money online casinos below and create a new account right away, in as little as five or ten minutes. Hefty bonuses and promotion offers, flexible banking, top-rated customer support, and a wide range of gaming are only a few of the amazing things you will experience using one of our favorite sites.

These are the best online casinos for playing slots and progressive jackpots in 2021. Are you ready to make this year the best on record for sweet slots action? It all starts when you join one of our favorite top-rated online casinos today. Click on one of the links in the table above and begin creating your new account.

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Best Real Money Slots Casinos Online

Best Slots Casinos by Type

Best US Slots Casinos for Real Money

Best UK Slots Casinos for Real Money

Why These Online Slot Casino Sites are the Best Choices

Now we want to take just a bit of time to go over exactly why we chose these online slots sites.


Online slots bonuses are a fantastic way to spruce up any slot playing experience! All of the slots casinos that we recommend will have plenty of different bonus options to choose from. Including bonuses such as:

  • Free Spins
  • Deposit Bonuses
  • Comp Points
  • Signup Bonuses
  • …and many more!

There are many casino bonuses you can take advantage from that can help take your money to the next level, online slots only scratches the surface of how far a casino bonus can take you!

Best Payouts

When you’re playing online slots, there is no doubt you’re looking for the game that offer the best payouts. Every one of the real money online slots casinos we recommend are the top of the line when it comes to how they handle their payouts. Their customer services is always tested and proven to be top-notch, just in case there are any problems that may arise during the payout process.

Most Quality Games

We’re not only talking about only how many games are provided, here. Just because a slot casinos site might offer an unmeasurable amount of casino games, doesn’t always mean that they are all going to be the highest quality. We always ensure during our vetting process that all the games provided are from high quality providers, and also adhere to all RNG standards and gaming certifications that are needed for the best online slots. All of the real money online slots casinos you will find recommended here will have numerous slots of the highest quality.

Benefits of Playing Online Slots for Real Money

Slots Bonus at El Royale CasinoThere is more than one good reason to join one of our favorite online casinos for slot games. Here are some of the best benefits and perks our customers have experience when they have created a new account.

Generous Welcome Bonus

When it comes to welcome bonuses and promotions for newcomers, these top-rated casinos are in the running for some of the most generous offers to date. Additional funds in the form of great welcome bonuses and weekly promotions are great for new players who are looking to increase their bankroll, getting them off to a great start playing real money slot machines online.

Top-Rated Gaming Software

When it comes to slot machines at our favorite US online slots casinos, they are some of the top-tier games in terms of eye-capturing graphics, exciting themes, and phenomenal navigation and handling. And this is all made possible by some of the most renowned names in the world of slots software developers. It is these companies that make for the best slots action at our recommended gambling sites.

Free Play Slots

Are you new to the slots scene and unfamiliar with how they work or how they are played? No matter what you skill level or how knowledgeable you are with slots games, it does not matter when you factor in the free play slots option at our favorite sites. With free play slots, you never need to worry about playing for money and can spend your time enjoying the leisurely nature of playing strictly for fun. Free play slots also allow you some practice time on the machines to become familiar with the rules and get comfortable with them.

Online Slot Games With the Best Payouts in 2021

If you’re adamant about winning some real money playing great online slot titles, you may want to look into a few of these, all with high jackpot values and return to player percentages. These are the heavy hitters for the most avid slots fanatic, by far.

Highest Payout Slots

Rank Slot Game Return to Player Jackpot Value
#1 Gladiator 91.50% $2,000,000 Minimum
#2 Cleopatra 95.02% $2,000,000
#3 Mega Moolah 88.12% $1,000,000 Minimum
#4 Gold Fish 96.00% $1,050,000
#5 Lucky Leprechaun  96.83% $500,000
#6 Carnival Cash 95.96% $500,000
#7 Buffalo  94.85% $405,000
#8 Book of Dead 96.21% $250,000
#9 Wheel of Fortune 94.22% $250,000
#10 Rainbow Riches 95.00% $25,000

Real Money Online Slot Games Reviews

One great way to find out about the best slots in the market is to read reviews online. Here are a few that you should probably check out.

Free Online Slot Games

For some players, free online slots are the way to go. Free play slots are a great way to give players some practice time on the machines and get them used to how the game works before having the bet any real money. And another great aspect of playing free slots is there is not sign up required and no need to divulge any personal or financial information.

There are many great free slots apps and downloads available online. Check out any of these slot titles above and play the free version now and get a feel for the action today. Before you know it, you’ll be playing slots for money like a pro!

Learn More About Slot Machine Creators

Great gaming companies and slots software providers play a huge role in the success of slot games and their role at our favorite online casinos. Check out our list of top-rated game providers, the people who make the best slots action at our recommended gambling websites a reality for our customers. These are some of the best, most trusted names in the market.

 Top Game Software Providers

Click on any of the names below to find out more about each of these phenomenal software creators.

What to Expect From the Best Online Casinos for Slots

Three-Reel Slot FaceHere are the factors and aspects our expert team looked for when preparing our top-rated recommendations list for online casinos with great slot games. We can state with confidence that the best slot games are in your near future when you create a new account at one of our favorite sites today.

Safe and Secure Signup

The process to sign up at one of our recommended online casinos takes no more than five to 10 minutes. And it’s easy and user-friendly for new customers. Each site carries safety protocols like Personal Identifiable Information (PII) and Know Your Customer (KYC) that vet new customer sign ups and they employ safety software that guards customers’ personal and financial information against misuse and mishandling.

A Variety of Slots Games

They say that variety is the spice of life and that holds true at our favorite online casinos when it comes to casino games and slots in particular. It is not uncommon to visit one of these sites and find well over 100 top-rated slot titles. A good mix of games are not only exciting, but they ensure that customers, new or old, can stay engaged and satisfied for days, week, and months.

Lucrative Bonuses and Promotions

One of the earmarks of a great online casino is their ability to provide customers with additional avenues to generating real money outside of their gaming. This is where great bonuses and promotions come in, an opportunity for customers to grab up some extra funds for their bankroll for performing acts depositing a certain amount of cash as a newcomer, getting in on cashback programs, and grabbing up free spins for a chance at more cash.

Fast Payouts

The best online casinos for slots offer their customers fast payouts. This can generally be accomplished in the quickest fashion when you use Bitcoin as your depositing and payout method, within 48 hours. However, there are many other great options that can get the job done in a reasonable amount of time as well such as money orders bank wire transfer, and such.

A Variety of Banking Methods

Gold BitcoinThere are plenty of ways for customers to make deposits and collect their payouts when they play slots at one of our favorite online casinos. These sites know that banking is not a “one size fits all” matter. So, they’ve created multiple ways for customers to operate in this realm, including Bitcoin, credit cards, bank wire transfers, money orders, PayID, Person to Person, and many more.

Great Customer Service and Support

Our expert team made sure that each site we added to our list had customer service that could be reached 24/7 via a toll-free phone number, an email address or contact form messaging, and a live chat feature that allows customers to speak to a representative directly. Our team also vetted each site’s customer service channels and found that all their representatives are knowledgeable and carry themselves in a professional and helpful manner.

Mobile Compatibility and Connectivity

Each site on our recommendation list is compatible on both iOS and Android devices and, through the use of an app or downloadable version of the site, every one of these sites can be use on a mobile device for an on-the-go gaming experience. Customers can now play their favorite slot games for real money on their phone, tablet, or other smart device an experience the same sights, sound effects, handling, and navigation that they usually would on their desktop computer.

Different Types of Slots Available Online

You may begin to play some slot games and notice that some of them are different from others. There are more than one type of online slot machine format. In fact, there are five to seven different varieties.

Three-Reel Classic Slots

This is the most basic form of the game and probably the one that jumps to most people’s minds when they think of slot machines. Although they can come across as simple and basic to the avid slots player, these machines only contain three reels, which means there is a reduced number of symbols. As a result, the symbols will tend to offer a higher payout if they appear on these reels. This really helps out with your bankroll as well because there are only one or two paylines to deal with.

Autoplay Slots

These are an option at many online casinos where the player can set the reels to spin consecutively without having to manually press any buttons to initiate the spins. While it can allow players to experience a quicker pace for their slots gaming, it is not a preferred method of play if you need to do any adjustments like changing the coin size or number coins you play per payline.

Fruit Machines

These are sometimes referred to as “fruities” and are probably the most simplistic and stripped-down version of slots play that you can get. The symbols consisted simply of fruit. These were really popular back before the 1970s and consisted of placing a bet, pulling the handling (or in today’s case, push the spin button), and waiting for the result. In many instances, it was a uniform, set bet with little variation.

Multi-Payline Slots

These are slots that have more than one winning line. Each time a player puts in more coins, they are able to activate more paylines until the maximum number of lines is reached. One coin allows the middle paylines to be active. Winning combinations that hit on paylines that were not activated will not count toward the players wins. Players will have to keep betting more coins to open more lines. The maximum number of lines depends on which slot game you are using.

Multi-Reel Slots

Where multi-payline slots have more paylines available to players, multi-reel slots have—you guessed it—more reels to play off. Sometime these can range from four to nine reels. Players can increase their number of winning combinations when they increase the number of reels they are using. Because there are more options on the table, players can create combinations vertically, horizontally, and diagonally.


These types of slots feature multipliers that allow players to maximize their wins, many aiming to double or triple their winnings. When it comes to multiplier symbols, some will multiply wins while others may only count toward the line bets or total bets. Multipliers can come in the form of free spins or bonus rounds. Some slots machines have wild or scatter symbols that double as multipliers as well. Much of this is conditional on the specific slot you are playing so be sure to read as game rules for each game you pursue playing.

Progressive Slots

Slots are referred to as progressive when a portion of the player’s bet go toward increasing its maximum jackpot. The jackpot is set to go off at a random time so, with ever bet a player makes, they come closer and closer to winning the big prize. If not, the bet contributed to an increase in the prize and the player is now more likely than ever to seize the win.

Online Real Money Slots vs. Free Play Slots

Nearly all of the slots found at one of our favorite online casinos can be played at a shot to win money prizes and rewards. There are also some free play slots that are available for players who are looking for some leisurely play or practice time on the reels.

Pros and Cons of Real Money and Free Play Slots

Each type of gaming carries with it many benefits and some drawbacks. Check out some of the pros and cons of real money and free play slots below.

Real Money Slots Free Play Slots
Players can win real money rewards and prizes Players can use these to practice playing
Players can take part in progressive jackpots They can be played without giving any personal or financial information
Real money slots can access bonuses and loyalty perks for players No signup is required, nor is any download needed
With real money on the line, there is not as much leisurely fun These cannot be used to gain loyalty points
Payouts can take some time to be added to your account Free games do not qualify for real money bonuses or progressive jackpots

How to Play USA Online Slots for Real Money

Do not let the title of this section intimidate you by any means. Slots are fun to learn and easy to pick up playing. Check out our simple step-by-step guide below to get the gist.

Mobile Slots Apps

Mobile slots are slots games that have been specifically created for mobile use only on smart devices like iOS and Android. Many times, these mobile slot apps come with more enhanced effects, gameplay, game bonus features, and jackpots than the average online slot game provided by an online casino. They are worth looking into.

Mobile SlotsHere are some of the best mobile slots currently on the market.

  • Esqueleto Explosivo
  • Jack Hammer
  • Raging Rhino
  • Royal Masquerade
  • Starburst

General Slots Strategies and Tips

Online slot games are largely based on chance and Lady Luck casting an admiring glance in your direction. In fact, slot machines (both online and physical machines at land-based casinos) use random number generating software, or RNGs, to ensure that all combinations on the reels are completely random and unplanned.

In spite of the nature of slots and the factor that luck plays in how they operate, there are some strategies and tips that you can use to increase your chances of scoring more wins than losses. There are also some methods that can help you keep your losses under control. These are simple and somewhat subtle tactics that can allow you play slots in a more thoughtful and intentional fashion, ones that will hopefully generate some strong real money wins.

Slot Machine Strategies

Check Out RTP Percentages

Nowadays, you can hop online and find out almost anything about your favorite real money slot games online. This includes any Return to Player percentages that pertain to certain slot titles. If you’re serious about making some coin of playing slot games online, you best look into which have the best RTP percentages. A higher RTP rate will ensure a greater chance of you taking home some greater wins and heftier payouts.

Take Advantage of Free Play Slots

Free play slots are perfect for the player who is looking to get more face-time with the game or trying to become more familiar with how it works. Use free play slots to you advantage and get the feel for a slot game you may not be familiar with, perhaps a slot that has a high Return to Player percentage. Becoming more knowledgeable of the slot games can help you to become more aware of the details, nuances, and patterns. Who knows? Maybe you can find some sort of edge to give you an advantage.

Make a Budget and Stick With It

We cannot stress this tip enough. Set up a budget, a predetermined amount of cash you could part with in the event that your luck should go south. Setting a budget will help to minimize any potential losses and get you used to the idea of parting with the money. This can help you to move on from the loss and not allow it to cloud your judgement or decision making faculty in future gaming sessions. Believe it or not, this has been known to happen to many individuals who could not deal with an excruciating, crushing financial blow. Do yourself a favor for your bankroll and mental health and create a budget.

Play Smaller Jackpots

Smaller jackpots are known to payout more often. When was the last time your heard of a giant, multimillion-dollar jackpot paying out like crazy? That’s right, you have not seen that because the general rule of thumb is that larger jackpots are less likely to pay out for you. Conversely, the smaller the jackpot, the more likely you can get it. Place your bets on the smaller jackpots to maximize your opportunities of winning.

Look at the Pay Tables

This is a strategy that could potentially be overlooked. Find out which symbols are paying the most and use this information to adjust your bets and payline activity accordingly. This will allow you to not waste your time chasing winning combinations on lower paying symbols.

Tips for Playing Slots Online

Choose a Reputable Site

It’s plain and simple. Find a site that you can trust. Make sure they have a proven track record of treating their customers well and that they’re conducting their business in an honest and trustworthy manner. This can put many potential issues or headaches to bed.  

Join the Loyalty or VIP Club

Earning points for your time and gameplay is always a great thing to use to your advantage. Many online casino loyalty schemes also offer enhanced betting limits, personalized customer support, and access to exclusive tournaments or events.

Use Bonuses and Promotions

Take advantage of any real money prizes, incentives, or perks that your online casino is offering. This means more funds available in your bankroll which means more funds to use playing your favorite slot games.

Use Bonus Rounds

Bonus rounds take the heat off of your bankroll balance. You are getting free spins, courtesy of the site. It would be stupid not to use these. This one is obvious.

Use Simple Games

Flashy slot games with have more “bells and whistles” are fun but are ultimately going to feature a lower payback percentage than a simpler slot game. in most cases, you will win far more often playing a slot game with a simpler format, theme, and presentation.

Check Out More About Real Money Slots Online

Frequently Asked Questions About Slots Online Casinos

Are Real Money Slot Casino Sites Safe to Use?

Online casinos that we recommend in this review are safe to use. Each site can legally accept bets and wagers from players in the US. Every single one is fully licensed by a reputable gambling authority in a reputable jurisdiction.

As far as safety protocols go at each site, there are systems in place to vet new customers like Know Your Customer (KYC) and Personal Identifiable Information (PII). Safety software can also be found at each site that protects all personal and financial information shared against any sort of mishandling or misuse.

Can I Win Real Money Playing Online Slots?

You can win real money playing slots at any one of our favorite online casinos. In fact, most games at each gambling site can be played for real money prizes, rewards, and bonuses. There are also free play slots that allow you to play without it costing you anything.

These are a great tool for those looking for some extra face-time with a slot machine or anyone looking to get familiar with the game and get in some practice time before playing for real money.

What Is a Progressive Jackpot?

A progressive jackpot does not have a fixed amount for players to win. No, it is much more interesting. The jackpot will payout at a random time determined by a random number generator and typically once the jackpot amount has reached a lucrative total.

Every time a player tries their hand at the jackpot by making a bet or wager, the price of the jackpot will continually increase. The thrill of playing these kinds of jackpots is the anticipation that it could payout at any given moment. If you do not win, there is always the next time around, and your odds that time will be even better.

Can I Play Slots at Online Casinos for Free?

Yes, you can play slots for free at online casinos. These are called free play slots, and they allow customers to enjoy select slot titles without having to pay anything to play. This gives new players a great outlet to get in some practice time or just some leisure to enjoy their favorite slots without having to think of their bankroll balance.

What Is the Best-Paying Online Slot Game?

The Gladiator slot has the best jackpot value minimum, which is set at $2,000,000, but some of the biggest wins have come from the Mega Moolah slot game like $22.4 million in September 2018 and $19.9 million before that in the UK.

Are Online Slot Games Rigged?

Online slots games are not rigged. The factor that keeps slots creators from rigging the machines is the compulsory inclusion of a random number generator to decide results and outcomes. RNGs are computer-based programs that randomly create the combinations that customers will receive ensuring that all combinations are completely by chance and not predetermined. These are the same programs that are used in the land-based casino slot machines as well.

What Should I Look for With Online Slots Casinos?

Look for a casino that, first and foremost, is a reputable outfit, legal for US players to use and equipped with safety software and protocols to guard customers’ personal and financial information. Customers should also make sure there is reliable and helpful customer service that is available 24/7 via email, phone, and live chat.

It is important for each site to offer a great variety of real money bonuses, top-rated slots titles, and banking methods for deposits and payouts. It also never hurts when the site is compatible with you mobile device through an app or a downloadable version of the site.

What Is the Best Site to Use for Slots?

We love every site we include on this recommendations list, but Las Atlantis really is a cut above the rest. Most of this lies in their generous welcome offer of 280% up to $14,000. The site offers great variety in its gaming selection, the options for banking including deposits and payouts, and their lineup of additional real money bonuses.

The theme and graphics are also truly unforgettable. They have a really good grasp on their branding and what they are. They are an all-around winner.