15 Best Online Slots for High Payouts and Real Money Wins

Then you need to sign up to the top-rated online casinos that have the best slot games. 

There are a lot of online slots sites out there, and some are better than others. To help you out, we’ve created a list of the best online slots sites that have personally been verified by us. Each one is fully licensed and secure to use, and for each site we’ll be highlighting their standout slot, as well as what else they have to offer in terms of online slots. 

First look at the best online slots:

1. Ancient Gods - available at Red Dog Casino
2. Ocean’s Treasure - available at Cafe Casino
3. Caesar’s Empire - available at Ignition
4. Stacked - available at Super Slots
5. Aztec’s Millions - available at Las Atlantis
6. Atlantic Treasures - available at Slots.LV
7. Arrogant Pirates - available at Bovada
8. Popinata - available at Slots Empire
9. Tower Fortuna - available at Wild Casino
10. Asgard - available at El Royale

The Best Slots Sites Online, and Their Top Games

1. Red Dog Casino - Best for Ancient Gods

• 140+ slots
• Brand-new online gambling site
• Poker available 

Red Dog Casino is home to Ancient Gods, a popular 96% RTP slot produced by RealTime Gaming. It has mid-range volatility, you can play it in demo mode, and it comes with 25 active pay-lines alongside realistic visuals.

Other than that, Red Dog Casino offers a huge variety of slots. A search bar makes it super easy to find the slots you love to play, while other titles include Princess Warrior and Legend of Helios. 

Other casino games you can play here include poker, blackjack, and roulette.

Red Dog Casino is actually a fairly new online casino that was established in 2020. But while such newness might put some players off, we can vouch for its license, as well as its security. 

Moreover, because it’s so new, Red Dog has all the latest and greatest new slots for real money, it works excellently on mobile, and its stripped-back site design makes it easy to navigate. 

2. Cafe Casino - Best for Ocean’s Treasure

• 200+ real money slot games 
• Generous welcome offer
• Live games available 

Cafe Casino is a popular online slots site where you can take your pick from hundreds of slot games, including the entertaining Ocean’s Treasure. With a 95.66% RTP and a max win of x1500.00, this is a Norse mythology-inspired slot that’s rich with bonus features and cool graphics. 

When it comes to its bonuses, Cafe Casino kicks things off with a generous welcome offer that includes free spins to be used on specific slots. Existing players are then rewarded with a number of subsequent bonuses, promos, and perks, while a rewards program gives you the chance to win some of the weekly prize pool.

All the games at Cafe Casino have been optimized for mobile play, and these include blackjack and roulette variants, as well as a good choice of live dealer games. 

And while payment methods are a tad on the slender side compared to some rivals, payouts are at least super fast and reliable. 

3. Ignition - Best for Caesar’s Empire

• Bitcoin accepted 
• Excellent casino bonuses 
• Great for poker 

Ignition is an online casino that’s primarily known for its poker room. It’s easily one of the best sites in the world in terms of traffic, and there are daily tournaments galore, as well as a variety of different players to compete against. 

As such, if you fancy mixing things up between poker and slots, Ignition might be for you. Moreover, rake is highly generous and the graphics are seamless. 

Alongside its poker rooms, Ignition also offers a very good selection of online slot games. Our top pick is Caesar’s Empire. Its exact RTP is hard to pin down, but there are suggestions it can go as high as 97.50%, which makes it one of the highest paying slots in the world right now. 

Caesar’s Empire was produced by RealTime Gaming, it comes with 5-reels and 20 pay-lines, and it comes with a random progressive jackpot that you can win on any spin (and it doesn’t matter how much you staked). 

Ignition offers a number of casino bonuses that can be used on slots for real money too. 

In terms of its payment methods, this is a Bitcoin casino so there are a number of cryptocurrencies accepted as well as credit card. This is an established online slots site with thousands of satisfied customers around the world. 

4. Super Slots - Best Online Casino for Stacked

• 250+ real money slot games 
• New games added all the time
• Functional website 

As per its name, Super Slots is an online casino heavily focused on slot games. It’s home to more than 250, many of which have a higher-than-average RTP and that are provided by some of the biggest names in online slot game development.

The standout slot has to be Stacked. Produced by BetSoft, Stacked has a 96.39% RTP and comes with low-to-mid volatility. Max win is x664.30, and the game is brand-new for 2021. 

Indeed, Super Slots is constantly updating its library with new slots, and you can find all the latest additions at the top of the homepage.

As well as slots, you can also play blackjack, roulette, video poker, and live casino games. 

We also think players will appreciate the user layout. Super Slots boasts a professional but colorful site design that’s both aesthetically pleasing and functional. Everything is easy to find, and there’s a search function to make it even easier for you to find your favorite games. 

Do we think there could be more games available on mobile? Yes. But if you’re only looking for a desktop slot experience, Super Slots has all the bases covered. 

5. Las Atlantis - Best for Aztec’s Millions

• Unique web design
• Poker available 
• Generous welcome bonus 
• Progressive jackpots available

Las Atlantis is a quirky modern-day online slot machines site that has a unique underwater casino theme. It looks easy on the eyes and will suit players who prefer to play at slots sites that look and feel a bit different.

Its slot selection is as good as its rivals. It’s also got Aztec’s Millions, a progressive slot that has a 95% RTP. That’s not actually the highest RTP around, but Aztec’s Millions is one of the most popular slot games in the world that ― as a progressive ― gives you more than one way to win and lets you have as many as 10+ dry spins. 

As well as slots, you can also play the likes of blackjack, poker, and roulette at Las Atlantis, alongside a solid selection of other casino games. 

It’s a shame that live dealer games are missing, but Las Atlantis at least makes up for this with its arsenal of slots, while a generous welcome bonus is on the table for new players. 

6. Slots.LV - Best for Atlantic Treasures

• 50+ progressive jackpot slots
• Attractive promos 
• Generous bonuses 

Slots.LV is ― as you probably guessed ― an online casino that excels when it comes to slot games. Its range of slots is varied and includes classic slots alongside new ones and lots of progressives, and it’s also got Atlantic Treasures. This is a 95-96% RTP slot (the RTP varies) with mid volatility that comes with lots of free spins and bonus games. 

Other than that, there’s barely a slot that you won’t find at Slots.LV. Indeed, there are over 50 jackpot slots alone, which by far surpasses anything offered by rival real money online casinos. 

Slots.LV also has some of the most attractive welcome bonuses too, which can be used on slot games as well as other casino games.

Speaking of other casino games, at Slots.LV you can also play the likes of video poker, craps, blackjack, and more. However, there are no live dealer games here. On the other hand, all the games that are available were produced by top-notch software developers with bags of reputation for creating some of the best online casino and slot games on the planet. 

7. Bovada - Best Real Money Online Slots for Arrogant Pirates

• Renowned sportsbook 
• High RTP online slot games
• Bitcoin accepted 

Bovada is widely known for its sportsbook. At Bovada, you can bet on all kinds of sports, including all the major popular ones, as well as a large number of niche ones. 

There are hundreds of betting markets, the odds are competitive, and there are bonuses galore. For sports and slots fans, it represents a solid choice. 

Bovada also has an online casino section, which is currently home to over 100 slot games. These include Arrogant Pirates, a value-based slot that comes with a number of special features. Max win is topped at 800, max bet is $120, and there are 15 pay-lines and a huge amount of fun to be had. 

You can also play the likes of poker, while Bovada’s live dealer games are authentic, and max and min stakes vary from table to table. 

And while Bovada’s licensing situation has always been the subject of much conjecture, we can at least say with certainty that it’s a legit, fully established slots site since 2011 that is super secure to use. Moreover, Bovada accepts numerous payment methods, including Bitcoin and Bitcoin Cash. If you are in Canada and looking for an online canada casino, be sure to check out their sister site Bodog casino as well.

8. Slots Empire - Best Slots Site for Popinata

• Bitcoin accepted 
• 200+ slots
• Video poker available 

Slots Empire is yet another online slots casino that’s focused on slots. Here, you can play more than 200 slots, all of which are optimized for mobile devices. 

Our top pick is Popinata, a 96% RTP slot game with a Mexican party theme that was developed by RealTime Gaming. It’s a 50-reel slot that comes with 5 pay-lines and a max payout of 125,000. 

That said, Slots Empire’s slots roster is filled with such a huge variety of slot games that there’s something here for everyone. You can play most of the games for real money, while a number of them are available in free/practice mode too.

Other casino games you can play at Slots Empire include blackjack and video poker, and while payout limits are a tad on the short side and won’t suit high rollers, this slots casino is still ideal for casual players. 

9. Wild Casino - Best Online Slot Site for Tower of Fortuna

• 197 slots 
• Bitcoin accepted 
• Instant play 

Wild Casino is an online slots site that currently has almost 200 slots to choose from. These include Tower of Fortuna, a 96.09% RTP online slot produced by BetSoft that can be played for real money or for free. Max win is x3200, volatility is average, and there are free spins available.

Other slots you can play at Wild Casino include Frenzy Fortune, Madame Margot (brand new), and Voodoo Queen. 

And while slots are where Wild Casino specializes, they also have a good selection of blackjack games (9). There’s a live dealer casino too, as well as video poker games. 

Some players might prefer to sign up to a slots casino that has more slots. But the great thing about Wild Casino is that you’re not overwhelmed by the choice and that this is an online casino that puts quality above quantity. 

10. El Royale - Best Real Money Slots Online for Asgard

• Stylish web design
• Hundreds of popular slots
• Poker available 

El Royale is a stylishly themed real money slots casino that actually looks kind of glamorous. If you like the idea of playing slots in style, this might be the site for you. 

One of the slots you can play here is Asgard. This is a high RTP slot (RTP is pegged at 96.48%) developed by Pragmatic Play. It’s got 25 pay-lines, 5-reels, and lots of bonus rounds and exciting features.

Aztec’s Millions is another popular slot that’s available at El Royale, and altogether there are hundreds to choose from. 

You can also play poker at El Royale (both recreational and professional players are welcome), blackjack, and a range of other specialty games. 

El Royale certainly has a serious look and feel to it, and high rollers are welcome. But if we could have one criticism, it’s that, at the time of writing, live poker isn’t available. Still, poker fans can enjoy a few automated variants, and the welcome bonus is generous. 

11. Big Spin Casino

• 100+ slots
• 3D slots available 
• Live dealer games

13. BetOnline

• Instant play slots
• Sports betting available 
• Poker variants

14. Sportsbetting.ag

• Hundreds of slots
• High rollers welcome
• Authentic live dealer games

Ranking Methodology - How We Chose The Best Online Slots 

Reputation - We checked things like an online casino’s license, customer reviews, and its security to make sure that it’s reputable and therefore we deem it as trustworthy. 

Variety of slots - We know that variety is the spice of life, and as such, you’ll find that the online casinos in our list include a range of slots, such as 3-reels and 5-reels, progressive jackpots, 3D slots, and more. 

Payout percentage - One of our chief aims was to find online casinos that have high RTP slots. This means that your chances of winning may be increased. 

Slots bonuses and promotions - Lastly, we added the best slots sites in terms of the size of their bonuses, as well as their frequency and their VIP programs. 

Guide to Playing Online Slots Sites

Why Play Real Money Slots? 

Real money slots give you the chance to win real money. Sometimes, they give you the chance to win big. They also give you the chance to enjoy bonus rounds, grab free spins, and even earn loyalty points. 

Not just that, but they’re a whole lot of fun. 

Can I Play Free Slots at Online Casinos?

You most definitely can play slots online for free if the specific casino sites offer free slots. A free slot is essentially the demo version of a slot machine. You can play it for free to test out your strategy and get a feel for the game, but you can’t win real money. 

What Are High RTP Slots? 

High RTP slots give you the best chance of winning when playing online slots because their payout percentage is higher than average. This means potentially huge jackpots if you strike lucky (while gambling responsibly, of course).

RTP means Return to Player, and it refers to the amount of times a slot game pays out. If a slot’s RTP is pegged at 96% or higher, you may expect it to pay out much more than a slot that is pegged at, say, 94%. 

Can I Play Slots Online on My Mobile Device?

Yep! As long as the online casinos are mobile-friendly and either let you play slots in your mobile browser or via a mobile app, you can play slots online on your mobile device. 

It's also worth mentioning that all the best online casinos are mobile-ready.

Are Online Slots Casinos Trustworthy?

As long as an online gambling site is fully licensed, there’s minimal reason to suspect that it wouldn’t be trustworthy. Fully licensed online slots casinos have put in place measures to ensure they’re secure to use, as well as transparent and fair. Moreover, it’s highly unlikely that they would then do something that would compromise their reputation.

Are Online Slots Rigged?

Online slot games work in such a way at fully licensed casino sites that they simply can’t be rigged. This is because they use something called RNG (Random Number Generator) to determine the outcome and to ensure fairness and transparency. 

Best Online Casinos for Slots: Final Thoughts

We’ve rounded up the best online casinos with the best slots in 2021. Whether you want to play progressive jackpot slots, high RTP slots, or themed slots that are bursting with bonuses and features, you can find them at these sites. 

As a final word, playing slots for real money is exciting ― but it's important that you also play online slots responsibly at all times. 

DISCLAIMER: 18+ only. Online gambling comes with many risks. Players are advised to gamble responsibly and only use funds they can afford to lose. Remember, gambling is only intended for entertainment purposes and is not a solution to any financial difficulties.

Gambling laws and policies vary from one region to another. Some sites mentioned in this review may not be accessible in your area. Always do your due diligence and check your local gambling policies. It is always better to be safe than sorry.

We are committed to providing our readers with accurate and timely information. The details mentioned in our review may be subject to change as casinos seek to improve their sites to offer their patrons a better gambling experience. 

This guide aims to provide you with the information you need to decide the best gambling site for you. However, it is not our intention to offer any gambling advice or guarantee gambling success. Players must gamble at their own risk.

If you suspect you’re becoming addicted to gambling, seek help immediately by contacting the National Gambling Helpline at 1-800-522-4700.

The following resources may be helpful as well:

• http://www.gamblersanonymous.org/
• http://www.ncpgambling.org/
• http://www.gamblingtherapy.org/