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Best Online Slots for Real Money – Get Over $5000 in Bonuses at Top Sites



Casinos and online slots go hand in hand. It may seem daunting at first trying to find the perfect game, but you may ask which are the best online slots?

Well, to answer that question, we will run through the best online slots to wager real money with, as well as explore in more depth the types of online slots you may come across.

The Best Online Slots Real Money 2021 List

At BasketballInsiders, we have analyzed some of the most well-known online slots for real money, and this is our top 10 list:

  1. Starburst – Overall best online slot for real money
  2. Mega Moolah – Popular online slot for real money
  3. Age of the Gods – Fantastic progressive jackpot slot
  4. Rich Wilde – Top RTP online slot for real money
  5. Immortal Romance – Cracking fantasy-themed online slot for real money
  6. Book of Ra – Best free online slot
  7. Dead or Alive – Good online slot for bonuses and free spins
  8. Gonzo’s Quest – Beautifully designed online slot
  9. Cleopatra Gold – Great online slot for re-spins
  10. Ancient Gods – Fabulous online slot for variable paylines

Where to Play the Best Online Slots

Best Online Slots for Real Money Comparison

Now, we have revealed our top list of best online slots for real money, let’s take a closer look at some of the core features of each title. We have referred to elements, such as the payout rate, and the minimum and maximum bet levels in the following table:

Game Payout rate (RTP) Min & Max Bet amounts Jackpot Bonus features
Starburst 96.09% $0.10 min bet
$100 max bet
$50,000 Stacked wilds, expanding wilds, re-spins
Mega Moolah 88.12% $0.25 min bet
$6.25 max bet
$56,250 Multipliers, scatters, free spins, quick spins, retriggering, wild symbols, multiplier wilds
Age of the Gods 95.02% $0.20 min bet
$500 max bet
$500,000 Multipliers, sticky wilds, scatters, stacked wilds, random wilds, wild symbol
Riche Wilde 94.25% $0.10 min bet
$100.00 max bet
$500,000 Expanding reels, free spins, scatters, retriggering
Immortal Romance 96.86% $0.30 min bet
$30.00 max bet
$3,645,000 Multipliers, Scatters, Random wilds, re-spins, free spins
Book of Ra 96% $0.01 min bet
$100 max bet
$25,000 Scatters, wild symbols, free spins, expanding wilds
Dead or Alive 96.82% $0.09 min bet
$18.00 max bet
$45,000 Multipliers, Scatters, Sticky Wilds, Retriggering, Wild Symbol
Gonzo’s Quest 95.97% $0.20 min bet
$50.00 max bet
$125,000 Cascading reels, free spins, multipliers, scatters
Cleopatra’s Gold 95.80% $0.02 min bet
$200 max bet
$200,000 Multipliers, Scatters, Multiplier wilds, Wild symbol
Ancient Gods 96% $0.01 min bet
$25 max bet
$50,000 Wild symbols, Scatters, free spins, Scatter, Multiplier

Everything You Need to Know About Online Slots

Playing online slots for real money has been legalized in several US states. The best online slots will provide immersive gameplay, and they will contain stunning graphics to keep players entertained.

If you are diving into the world of online slots for the first time, there are a few things you will need to get to grips with. In the following section, we will look at the different types of online slots, as well as the basics of how online slots function.

Types of Online Slots

If you are playing online slots for real money, you will want to play at the best online casinos. As you will discover, there are a few things that set apart the best online slots from the rest of the pack.

While some gamblers will gravitate towards a particular theme or jingle played on an online slot, others will discard that, and pick a slot that provides handsome wins. With that in mind, let’s take a closer look at the three different types of online casino slots you will come across.

Video Slots

One of the most popular categories in the online casino industry is video slots. With video slots, there tends to be more animation to the gameplay, and they feature a more computerized version of your favorite games.

With video slots, you can unlock many special features, including scatters, where the player can access different bonuses, such as free spins. At Red Dog, you can tap into a wide range of the latest video slots, including 777 slots.

Progressive Jackpot Slots

Progressive jackpot slots see the jackpot grow each time a player spins. With real money online slots, each time a player spins a reel, their contribution will count towards the overall jackpot. The jackpot will continue to grow until someone wins it, and then the process starts all over again. Mega Moolah is one of the most well-known progressive jackpot slots around.

As they continue to grow at a rapid pace, it is not uncommon to see progressive jackpot slots pay out millions in dollars. The best slot games online will have a tiered system in place for progressive jackpots, ranging from mini through to the grand jackpot. Below, are the top 10 progressive jackpot slots, and the maximum jackpot they offer.

Progressive Jackpot title Software provider Max Jackpot
Megah Moolah Microgaming $1,000,000
Mega Fortune NetEnt $1,000,000
Immortal Romance Microgaming $1,000,000
Age of the Gods Playtech $500,000
Deal or No Deal Endemol $100,000
Jackpot Giant Online Slot Playtech $50,000
Wolf Gold Pragmatic Play $250,000
Divine Fortune NetEnt $300,000
Superman II Playtech $225,000
Gladiator Playtech $250,000

Classic 3 Reel Slots

Although not as popular as they once were, 3-reel slots have three columns attached. Players will bag a win if they can get three symbols matched up on the reels.

NetEnt is among the big software developers that serve up classic 3-reel slots at online casinos, and they are ultimately preferred by the purists. These nostalgic slots may have little in the way of bonus features, but there are plenty of paylines to capitalise on, and they still have their place. If you are a fan of 3-reel slots, you should check out Precious Treasures, A night with Cleo or Caesar’s Triumph, which are all served up at Bovada.

Caesar's Triumph are among the best 3-reel slots offered at Bovada

How Online Slots Work

It may come as little surprise that there is relatively little skill in mastering online slots. Slots can be bright, flashy, and fast, but they need not be confusing. Rather, real money slots online rely heavily on luck.

Online slots are played on a series of vertical reels, where you will find symbols. In every game, the reels will spin, and will stop randomly thanks to a random number generator (RNG). The randomness of these prevent games from being rigged, and RNGs are licensed by third parties. They are there to ensure fairness throughout the online slots experience.

To get started, you will need to select a bet credit, and the number of paylines you wish to wager on. If you elect to play with maximum betting credits, then this will make you eligible to win the progressive on specialty slot machines.

Once you have wagered a credit, you will need to pick the payline. Classic slot machines simply have reels that go straight across, while more contemporary online slots will have paylines, where you can win vertically, horizontally or diagonally. This is in part down to the scatter symbols where you can activate dozens of paylines. The more paylines you select to play, the more credits the online slot will require.

With online slots, there are a variety of key features, such as free spins or cascading reels. With the latter, winning symbols are taken out of play, and you receive a free re-spin. Consecutive winning cascades will be awarded a progressive multiplier. When it comes to taking out winnings, cryptocurencies are accepted, and they can expedite the withdrawal process.

Best Online Slots Software Providers

The best online slots sites will work closely with a wealth of top slots software providers to launch the latest titles to engage with gamblers. They will be truly immersive, and the experience will be seamless for those playing on either the desktop version of an online casino or on mobile.

Either way, there are a plethora of renowned software developers, which you may have heard of. Below, we will give you the lowdown on each of them, and the sort of game titles that are flying off the production line.


Widely considered one of the best on the business, NetEnt’s origins lie in Scandinavia, and with headquarters in Sweden and Malta, they are renowned for producing state-of-the-art games. With over 200 games in the casino library, NetEnt has a proven track of creating slots and poker games.

No corners have been cut by NetEnt, and there are a raft of memorable online slots games in their roster, including Gonzo’s Quest and Starburst.


Since releasing their first online casino in 1994, Microgaming are a heavyweight in their own right, and they are known for producing games for land-based casinos as well. You can find it all at Microgaming from slots and tables games to software for live dealer suites, and multi-player titles.

Microgaming’s slot titles have been extensively reviewed, and while they may not be as dramatic as NetEnt, they are still a triumph. If you want to play slots online, you could well encounter a Microgaming title. Among the titles in its library, includes Mega Fortune, Divine Fortune, and Megah Moolah.


Also, another powerhouse featuring in this list, is Playtech. From its humble beginnings in 1999, Playtech rose to prominence quickly, and it has become one of the foremost developers of slots titles. Playtech prides itself on being able to produce cutting-edge games that will resonate with a wide casino audience.

Playtech has crossed over into the land-based casino environment, but when it comes to real money slots online, you can be guaranteed quality. There is a mixture of themes running through their titles, and there is a heavy focus on 3D graphics, and progressive jackpots. Some of the most popular Playtech titles you can try out, include Age of the Gods, and Superman II.

Pragmatic Play

One of the most venerable software developers in the world, Pragmatic Play has been delivering exceptional online slot games for many years, and they are certified, and licensed in over 20 jurisdictions. Pragmatic Play has tried to push the boundaries to make their games innovative, and mobile-focussed, and gamblers will have no qualms when they play one of their titles.

With over 200 HTML5 games at their disposal, Pragmatic Play provides an award-winning service. Among the titles offered by Pragmatic Play are Sweet Bonanza and Fruit Party.

Realtime Gaming

More commonly referred to in casino circles as RTG, Realtime Gaming are one of the biggest providers of online slot games on the Internet. If you are a regular online slots player, you will probably have heard of RTG, and you would have tried out their games.

Most RTG-powered casinos have myriad slots in relation to other games. While there may not be as many slot titles compared to Microgaming or NetEnt, games such as Cleopatra’s Gold, and Stardust are reputable, and they are free to play too.

Bonuses for Online Slots

Bonuses come in various forms and guises at online slots for real money. The best online slots sites will endeavour to roll out some exciting promotions, and offers, which will act as crowd pleasers. When you initially sign up, you may be entitled to several of qualibonus spins, and some of the best bonus slots, include Starburst and Riche Wilde & the Book of Dead. Winnings generated from free spins are paid as bonus cash, and you will need to fulfil all the wagering requirements before you can make a withdrawal.

So, with that in mind, let’s take a look at some of the bonus offers you may receive when you sign up to new online slot sites. We have also produced an eye-catching table below to illustrate some of the bonuses available at the aforementioned casino sites, and along with that, you can find details of promo codes and wagering requirements.

Matched Bonus

A slots site will match the deposit you place in your account with the same amount of bonus cash if it is a 100% bonus. So, if you pop $10 into your account, you will get a $10 bonus. If for example, you put $10 in for a 200% bonus, you will get $20 in cash. The top online slots will always offer matched bonuses, and they will have favorable terms and conditions. Cherry Casino comes up trumps for matched bonuses.

Cherry Casino offers an enticing matched bonus for new customers

Free Spins

When you open a new account, you will be able to use free spins on the games of your choice. However, at some sites, you must be wary that the free spins offer may only apply to particular titles. Free Spins can sometimes be a standalone offer, while sometimes it may combine with a deposit bonus. Usually, you have to play through the qualifying game, and they have an average playthrough of 30x before they can be cashed out as winnings.

At Raging Bull, you can tap into the welcome bonus, and gain free spins on Fucanglong by entering the promo code ‘Bigger is Better’. But what is good here, is that the free spins don’t have any additional wagering requirements or come with delays for processing withdrawals.

Raging Bull throws in free spins for specific online slots titles

No Deposit Bonuses

Essentially, these act like free bet credits. This is usually a straight-up cash offer where the casino will put money into your account. All you will have to do, is sign up to a site to activate the offer. rewards players with generous no deposit bonuses


Casino Bonus Promo code Wagering requirement Expiry date
Wild Casino 250% bonus up to $1,000 WILD250 35x 30 days
Raging Bull 350% bonus + 50 free spins No code needed N/A N/A
Red Dog 225% slots bonus WAGGINGTAILS 35x N/A
Ignition 100% first deposit match up to $1,000 IGBITCOIN200 25x N/A Up to $5,000 No code required 30x N/A
Café Casino 100% up to $1,000 CAFE100 25x 180 days
Cherry Casino 200% slots match + 200 free spins BIGPLAY200 30x N/A
Bovegas $25 Free Chip 25WISH 25x N/A
Exclusive casino 250% slots match 250MAGICSKY 30x N/A
Bovada 75% bonus up to $750 BTCSWB750 30x N/A

Best Payout Online Slots

When it comes to finding the best online slot, variety is always paramount. However, RTP, which stands for ‘Return to player’ is critical for gauging how frequent a slot pays out. The best RTP slots will have an RTP of between 95 to 97%. In theory, the RTP shows how much money you would have after a prolonged gaming session. So, if you have $100 to wager with, and you are playing Starburst that has an RTP of 96.09%, you should have $96 remaining after the first hour.

Slots, as we know, can be highly volatile. Players can be prone to winning big or crashing hard, but RTPs are highly sophisticated. They are generated by supercomputers that have simulated millions of spins. RTPs are a good way to measure the effectiveness of the payout rate of a slot, and it is therefore more beneficial to play with a higher RTP than a lower RTP, as you will be able to pick up wins more consistently.

The RTPs of a slot can be found either through a quick google search or by visiting the online slots sites where information about the RTP will be clearly displayed.

So, without further ado, let’s check out 10 of the best RTP slots which qualify as the best payout online slots in terms of return-to-player.

Slot title RTP
Blood Suckers 98%
Caesar’s Empire 97.50%
777 97%
Immortal Romance 96.86%
Dead or Alive 96.86%
Starburst 96.09%
Ancient Gods 96%
Book of Ra 96%
Gonzo’s Quest 95.97%
Cleopatra’s Gold 95.80%

Free Online Slots

Many casino operators will now allow you to play online slots for free in the demo or practice mode. Ultimately, these are great as you can trial the game and decide which games best suit you before choosing which real money slots online to pursue.

Free online slots are supposed to be fun, and you can get a feel for the gameplay, and theme before parting ways with your hard-earned cash. Some of the best free online slots will be available at the casinos we have mentioned in this guide, including Wild Casino and Ignition.

There are several benefits attached to trying out free slots online before playing for real money, and this includes:

  • No account needed – You don’t need an account to try out the demo mode. You can head over to any casino site, and have a play around on the titles that have demo modes.
  • Practice at your own pace – There is no need to feel rushed when you play online slots. You should go at your own pace, and once you feel more comfortable, then you can transition to the real money version.
  • Study advanced paylines – Some of the slots will enable you to figure out how different paylines can be created, and within that, you can focus on your own strategy.

Of course, there are some downsides too with practicing slots online for free:

  • No bonus offers – If you have a fully-fledged account, you will be able to access some of the most generous bonuses, and the best online slots for real money will offer matched deposit bonuses or free spins.
  • Limited slot game variety – Essentially, when you try slots in demo mode, you won’t be able to advance too far in the game without playing for real money. This can to a certain extent, become repetitive over time.
  • Minimal customer support – While account holders will be able to call upon customer support through a variety of measures, if you are playing in demo mode, you will generally be overlooked by the casino site until you sign up.

Best Mobile Slots

Since the creation of HTML-5 in the mid to late 2010s, slots have become more conducive to mobile play. Before that, slots were created using Adobe Flash, but these presented a serious issue to iPhone users. Nowadays, many online casinos will have apps where you can enjoy a seamless experience of playing your favorite slots, and depositing cash into your account.

With mobile slots, you can download cached browser content, and as they are small files, they take barely any time to download. As long as you have a decent Wi-Fi connection, you will be able to navigate to the slots you wish to play.

Many of the top software providers have worked tirelessly to make sure the mobile product of their games are as efficient as the desktop version. Although the screen will be smaller, the sound effects, and gameplay won’t be too dissimilar to their desktop counterparts.

Indeed, many mobile slots are compatible with a wide range of devices, and software providers will install 3D graphics to make playing slots hassle-free if you are on the move.

Top Tips for Playing Online Slots Real Money

Playing online slots for real money can be a thrilling experience. And if you want to get the most out of them, here are five top tips to ensure that your time spent reel-spinning is a fruitful one.

Don’t get trapped in a slotting rut – It can be very easy to get too bogged down playing the same slots, and not get much joy from them. Instead, shake things up a little, and explore new slot titles or slots sites to make things more exciting.

Choose slots with high RTPs – This might seem like a bit of a no-brainer. However, you should always choose slots with higher RTPs than low RTPs. Slots by their very nature, can be highly volatile, but we recommend choosing slots with an RTP of 95-97%, so you can generate wins more regularly.

Take advantage of bonuses – If you are playing new slots sites, you will be deluged with welcome offers. Some of these bonuses will enable you to bet without the risk of losing your own cash.

Manage your bankroll – Always bet within means, and don’t bet more than you can afford. Ultimately playing slots should be fun. So, when the fun stops, stop!

Don’t Play when you are tired – While poker players can tilt when they make bad decisions or they are overly emotional, the same principlehard earne applies to playing slots for real money. Always play when you are at your sharpest, as you need to be level headed. If you are feeling tired, take a break and come back to the slots when you are feeling refreshed.


Real money slots have become a staple of the online casino world. With more and more titles being released on a regular basis, players are spoilt for choice as to which games to play. Of course, 3-reel slots still have their place, and they are relevant. However, those who want to challenge themselves may opt for 5-reel slots that come with an abundance of paylines.

Either way, in this guide, we have tried to shed light on how real money online slots function, and how you can profit from them. If you have enjoyed what you have read, then you should try out the best online slots for real money we have mentioned.


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Charles is an experienced freelance writer who specialises in iGaming and sports, producing informative and engaging content that resonates with a digital audience. This includes news articles, tips, as well as sportsbooks reviews.