Real Money Online Slots

Play online slots for real money on your laptop, PC or smartphone! At Gambling.com, we have the lowdown on the best online casino slots from the most reputable developers. Every one of our recommended slot machines is licensed in the US so you can play safely and securely at regulated slots casinos in your state. And we don’t stop at online slots. We’ll also highlight some of the top regulated casino sites where you can find classic steppers, slots with bonus features and progressive jackpot slots. Every gambling site on our list boasts hundreds of exciting online slots for real money. On this page, you will find our experts’ top-rated online casinos. Read the reviews and sign up today!

Our Recommended Slot Sites in 2021

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Every online gambler deserves a safe and fair place to play. Our mission at Gambling.com is to create a safe online environment for players through free, impartial and independent reviews of the best online gambling companies in the US so that you can play with confidence and security. All ratings and reviews are made independently of the operator by our team of gaming experts and with every company being fully licensed to operate in the US they can be trusted to offer fair play. We accept compensation from the companies advertised on this page and this may affect the brand positioning. We endeavour to continuously update this list so we can bring you the most current sites and the best available offers but we cannot review every site in the market.

Recommended Slot Games

How We Pick the Best Online Slots for Real Money

Only the best online casino slots make it onto our list. Here’s what we look for in a great real cash video slot:

RTPs (Return to Player percentages): All real money online slots have a theoretical return-to-player percentage (RTP). This is the average return made to the player. The best online casino slots will have an RTP of 95-98%. You can easily access payout information via the slot paytable. Some operators also place this information within their FAQ or Help section.

Volatility: All real money slot games have volatility or variance. The volatility is the frequency with which a slot pays out. High-variance slots payout large but infrequent payouts. Low-variance slots pay lots of small and frequent jackpots. Our team tests out every slot to check its volatility and payout frequency.

Game Design & Playability: No one wants to risk their bankroll playing dull slots. We always review every slot for graphics and playability. You can always test out a game in the free slots demo mode if you're feeling curious, but unsure.

Licensing & Reliability: Your bankroll should be safe whenever you play online slots for real money. All of our recommended online slots carry proper licenses in the US. Games are tested for fairness before they reach the slots casino lobby..

Online Availability: The best real money slots will be available at multiple legal online casinos in your state. Whether you have just one or several casino accounts, you’ll be able to find a broad range of great slots.

Advantages of Playing Real Money Slots at Online Casinos

You can now play legal online slots for real money in many US states. Here are five reasons why online slots beat land-based slot machine games:

Enjoy Your Favorite Land-Based Slots Online: Many US slot developers have adapted their land-based games for online casinos. The good news is that online versions are virtually identical to their land-based cousins.

Play Slots Anywhere, Any Time: Why travel miles to have fun at your nearest brick-and-mortar casino when you can gamble online? That’s the beauty of playing online casino slots. Just fire up the PC or laptop and gamble for real cash any time you like.

Find Higher RTPs Online: Some of the best land-based slots have RTPs up to 95 or 96%. Depending on the state, land-based casino slots' RTP may be in the mid-'80s. You won't find that at our recommended real money online slots; period. There are plenty of legal online slots in states like New Jersey that have RTPs up to 98%. Ultimately, if you are looking for a win, an online slot casino might be the better choice.

Gamble on Your Tablet or Smartphone: You can find hundreds of great slots to play for real cash on your mobile device. As long as you have a strong Wi-Fi connection, you can turn your iOS or Android smartphone into a portable casino.

Claim Free Spins or a Deposit Match Bonus: An online casinos will often boast a better slots bonus than land-based casinos. Claim free spins on your favorite games or earn a deposit match when you open a new account.

Popular Online Slots Types in 2021

What online slots pay real money? In 2021, you can play a range of exciting online slot machines for real cash. Just make a deposit and open a game in your browser.

Classic/3-Reel: Relive classic Vegas and Atlantic City steppers on your PC or tablet! Classic 3-reel slots are provided in the US by major developers like Bally, Barcrest and NetEnt. Enjoy nostalgic slots action with a few paylines and no bonus features.

5-Reel: The majority of legal online slots in the US are 5-reel games. Slots with 5 reels boast more paylines and often feature bonus rounds such as free spins.

6-Reel: You can now find a growing number of 6-reel online casino slots. 6-reel slots often feature many hundreds or thousands of paylines, plus exciting bonuses like stacked wilds and free spins.

Slots With Bonuses: Most online slots for real money feature at least one bonus round. Trigger free spins, a prize wheel, or an instant cash win when you land three or more scatter symbols. Or hit a prize win simply by landing matching symbols on adjacent reels. Multiway slots can feature anywhere from 243 to 100,000+ possible win ways.

Branded Slots: Relive your favorite movie, TV program, or singing star with a branded slot. Branded games may feature actual video or audio footage from the source material. The bonus features will be generous and the jackpots can be huge.

3D Slots: 3D online slots utilize the latest online casino technology to provide an amazing gambling experience. Games feature slick animated graphics, amazing sound and music and innovative bonus games.

Real Money Progressive Slots

Progressive slots are games that feature a special jackpot that grows with every qualifying bet. Some progressives are linked across multiple online casinos.

Usually, you must bet the maximum stake to trigger a progressive jackpot. The jackpot may activate at random, or you may be required to play a special bonus game first. In general, the more you bet, the better your chance of triggering the progressive.

Popular progressive slots feature the biggest jackpots. They are played by more gamblers at more online casinos. And the longer the jackpot goes unclaimed, the bigger it gets. The best games may also feature a series of tiered progressive jackpots.

Best Progressive Online Slots for Real Money

The top US casinos online spread up to a dozen progressive slots. Here are 5 of the top progressive jackpot slot games in at US casinos:

Divine Fortune (NetEnt): NetEnt’s Divine Fortune has one of the largest online progressive jackpots in the US. The game features a bonus game where you can win one of three jackpots: Minor, Major or Mega.

Gong Xi Fa Cai (IGT): Gong Xi Fa Cai is an Asian-inspired progressive that features free spins, multipliers and the Lucky Fortune Progressive Picker. Keep choosing lucky red envelopes until you match three colored gems and win the respective jackpot.

Loot’EnKhamun (WinStudios): WinStudios’ Loot’EnKhamun is part of a group of online progressive slots that can be played at legal casinos in the US. The game features a “BigOne Jackpot” that contains five levels of prize: Blitz Cash, Quick Cash, Super Cash, Mega Cash and Colossal Cash. The BigOne Jackpot has regularly reached over $3 million.

Stellar Jackpots with Silver Pride (Lightning Box): This African-themed progressive slot has 1,024 ways to win and a free spins bonus. Three Spaceship symbols will trigger the Stellar Jackpot Bonus where you can win one of three prizes: the Mini, Minor or Major.

China Shores with Quick Strike (Konami): This exciting Asian-themed slot features Action Stacked Symbols, free spins and a linked two-level progressive. The mystery jackpot is awarded at random during any base game. The more you bet, the higher your chance of hitting the progressive jackpot.

Highest Paying Slots Online

Not all online slot games are equal. If you want to win real money slots, you should know what to look for. A Return to Player Percentage, or RTP, is important. Sifting through 100s of games for the best RTP slots is probably something you're not eager to do. We've done a bit of that work for you. Below are the top 10 highest-paying online slots in the US right now.

Slot GameRTPWhere to Play
1429 Uncharted Seas98.5%Play at 888 Casino
Bloodsuckers98%Play at Hard Rock Casino
StarMania97.867%Play at Golden Nugget Casino
Opal Fruits97.75%Play at Caesars Casino
White Rabbit Megaways97.7%Play at Caesars Casino
Guns N' Roses96.93%Play at BetMGM
Jimi Hendrix96.9%Play at BetMGM
Imperial Riches96.88%Play at Golden Nugget Casino
Butterfly Staxx96.8%Play at Hard Rock Casino
Fruit Shop96.71%Play at TwinSpires

Online Slots Software Providers

In 2021, you can find approximately a dozen licensed and regulated slots software developers in the US. Some developers already supply land-based slot machines to US casinos while others are exclusive online manufacturers. Here are some of our favorite developers supplying online slots.

WMS Gaming

WMS Gaming/Williams Interactive provides top-quality online slot machines to many of the world’s best casinos. WMS is now a subsidiary of SG Gaming (Scientific Games) but continues to produce world-class gambling titles like Raging Rhino, Fire Queen and Epic MONOPOLY II.

Bally

Bally is one of America’s oldest slot machine manufacturers. Like WMS, Bally is now part of the Scientific Games giant and supplies legal and licensed games to many US online casinos. Popular online Bally games include adaptations of their land-based favorites like Quick Hit Super Wheel, Anchorman and Cash Spin.

IGT

IGT (International Game Technology) is another giant of the land-based slot machine market. You will find lots of IGT mobile and online slots at licensed casinos in the USA. Try classic slots like 7s Wild and Double Diamond or hit the big stakes in games like Cleopatra Plus and Gong Xi Fa Cai.

WINStudios

WinStudios is the development team behind the bwin/partyGaming brand. They provide many of their exclusive slots to partner online casinos in the US. The developer offers nearly a dozen linked progressive slots like Loot’EnKhamun and Melon Madness.

NextGen

NextGen forms part of the NYX Group, and supplies games and software to many US online casinos. Popular NextGen slots include Astro Cat and Big Foot, plus classic games like Bars & Bells and Ambassador.

NetEnt

NetEnt is a Swedish provider of online slots to the global casino market. It provides legal games to most US online casinos. Among the most popular NetEnt slots are Gonzo’s Quest, Jack Hammer and Starburst, as well as big progressives like Divine Fortune.

Other notable software developers include:

Is Playing Online Slots on Mobile Possible?

You can also play hundreds of online slots for real money through your portable device. Download a native app or log in and play through your web browser. Real money slots apps are easily available and you can even make deposits using your smartphone.

Mobile slots differ from online slots as they are adapted to work on your specific OS. The game screen will be smaller and you can access the paytable and other information with the swipe of a finger. We find that playing slots on a casino app can be enjoyable and very easy to get started.

How To Download A Casino App

iOS (Apple): Most regulated casinos in the US offer download apps for the iPhone and iPad. After registering your account, simply visit the App Store and download the client. The software is free but you will need to have iOS10+ running on your device.

Android: The Google Play Store doesn’t supply native apps in 2020. Alternatively, you can download mobile apps direct from the casino’s homepage. When prompted, choose the Settings and turn the ‘Unknown Sources’ option on. For most casino mobile sites, you will need to run Android 5.0 or higher.

Instant-Play: Many regulated casinos also let you play mobile slots through your browser. Simply log in to your favorite casino site through your smartphone or tablet and load up a game in your mobile browser. Slots programmed in HTML5 work perfectly on whatever platform you are running.

US Mobile Casinos with Video Slots in 2020

Several US states now offer legal and regulated mobile slots for real money play. Here are some of the most popular mobile casino apps and sites in 2021.

Casino NameStateApps AvailableMobile Slots
partyCasino New Jersey iOS (download); Android (instant-play) 30+Play Now
888casino New Jersey iOS, Android (download) 100+Play Now
Golden Nugget Casino New Jersey iOS, Android (download) 550+Play Now
Betfair Casino New Jersey iOS, Android (download) 80+
Unibet Casino NJ New Jersey iOS, Android (download) 40+Play Now
Caesars Casino New Jersey iOS, Android (download) 100+Play Now
Harrah’s Casino New Jersey iOS, Android (download) 150+Play Now
Tropicana Casino New Jersey iOS, Android (download) 100+Play Now
BetMGM Casino New Jersey iOS, Android (download) 80+Play Now
Pala Casino New Jersey iOS, Android (download) 75+
Borgata Casino New Jersey iOS, Android (download) 380+Play Now
Hard Rock Casino New Jersey iOS, Android (download) 150+Play Now
Mohegan Sun Casino New Jersey iOS, Android (download, no-download) 200+Play Now
Resorts Casino New Jersey iOS, Android (download) 150+Play Now
Scores Casino New Jersey iOS, Android (download) 80+
Virgin Casino New Jersey iOS, Android (download) 50+Play Now
BetAmerica New Jersey iOS, Android (download) 150+Play Now
SugarHouse Casino New Jersey iOS, Android (download) 200+Play Now
Unibet Casino Pennsylvania iOS, Android (download) 50+Play Now
Play SugarHouse Pennsylvania iOS, Android (download) 50+Play Now
Hollywood Casino Pennsylvania iOS, Android (download) 45+Play Now
BetRivers Casino PennsylvaniaAndroid (download) 50+Play Now
Parx Casino PennsylvaniaiOS, Android (download)75+

You can also check out some of the top New Jersey slots sites here

Online Slot Machine Basics

Little to no skill is needed to play slots. Let us guide you through the basics of slot machine play.

How to Play Online Slot Machines

Online slots are played on a series of vertical reels filled with symbols. In every game, the reels spin and randomly come to a stop thanks to a random number generator (RNG) that is regularly audited to ensure fairness. You win money by lining up matching symbols on paylines that run horizontally across the reels (though a few games have vertical or diagonal paylines, too).

First, you need to select your coin size and the number of paylines you want to bet on. Some slots have fixed paylines where you will have to bet on every possible combination.

Online Slot Bonus Features & Rounds

Most modern online slot machines feature a bonus round. The bonus can be triggered at random or by landing the required number of scatter symbols. These are symbols that payout regardless of where they land on the reels. Common slot bonuses include:

Free Spins: You receive a number of free games, sometimes with a prize multiplier attached.

Prize Wheel: You win a spin of a prize wheel that contains free spins, multipliers or jackpot cash sums.

Wilds: Wilds are joker symbols that help complete a winning combination across the reels. Wilds sometimes have prize multipliers attached.

Cascading Reels/Re-spins: In a slot with cascading reels, winning symbols are removed from play, allowing symbols sitting above on the reels to fall into their place. You then receive a free reel re-spin. Consecutive winning cascades are usually awarded with a progressive multiplier.

Pick ‘em Bonus: In a pick ‘em bonus, you get to choose from 10-12 hidden symbols on the screen. Behind each symbol is a cash prize, free spins or multiplier. Keep choosing symbols until the “Collect” sign appears.

How to Create an Account for Online Slots

If you want to play slots for real money, you'll need to begin with setting up an account. In most US states, you must be 21 or over to play real money slots on an app or online. The registration process is simple. You will need to:

  1. Create a unique account name and password
  2. Provide personal details such as a home address and cellphone number
  3. Provide the last 4 digits of your Social Security number (sometimes your full SSN will be required
  4. Verify your account by clicking on the email link
  5. Make a first deposit; you may have to provide personal documentation like a scan of your passport or driver’s license, or utility bills to further establish your age, identity and address
  6. Claim a welcome bonus; you can sometimes play online slots for real money with no deposit. Good casinos will offer a no-deposit bonus where you receive free spins on popular games. You may also received a slots bonus such as a deposit match. Make sure to read through all the wagering requirements as they differ from casino to casino.

How to Deposit & Withdraw Funds

Deposits at US online casinos are usually instant and operators will generally not charge a fee. However, in the US, some banks still won’t permit card payments and online bank transfers. You may have to choose an alternative banking method such as an e-wallet or prepaid card like Play+. You can also make deposits in person at a participating land-based casino if you live near one. Should you have any concerns, you can always reach out to the customer support

US deposit options include:

You can also learn more about payment options here.

Online Slot Strategies to Consider

Online video slots are simple to learn and play. But how can you make the most of your gambling bankroll? Follow our five easy tips.

1. Choose the Highest RTP

Every slot has a theoretical RTP built into the game. Always check the paytable first to see what the average payout is. The higher the RTP, the better the long-term payouts and the better your chances to win.

2. Choose a Game You Enjoy

There are thousands of online slot machines to choose from. It’s important to select a slot that you won’t get bored of. Choose a game with an interesting theme or characters, and make sure you care about the bonus features.

3. Test the Volatility with Demo Play

Some slots will have a low hit rate. That’s the frequency with which a game pays a prize. Volatile slots might decimate your bankroll before awarding a big prize. Test these games out with play credits first to see whether they have high or low variance by playing free online slots.

4. Increase Your Stakes for a Progressive Jackpot

Progressive slots award a big jackpot at random or through a special bonus game. But progressives will usually award big prizes to players who pay the highest stakes. Try increasing your coin size and take a shot.

5. Claim Your Casino Free Spins

The best US gambling sites will award free spins to new signups. As a regular player, you can also claim bonus spins on a Slot of the Week. Take advantage of these bonus promotions when you play online slots for real money.

Ready to start playing online slots for real money? Sign up to one of our top-rated casinos today and discover a world of exciting online slot machines!

Online Slots FAQ


The legal age to play at slot casinos is typically 21. Some states do have varying laws so it is best to confirm beforehand. You will also need to be in a legal state such as Michigan, New Jersey, or Pennsylvania.

Nothing beats the excitement of real cash gambling online. For small stakes, you can win big prizes and even a progressive jackpot. Maximum online stakes can be as much as $500-$1,000, or more.

No. Only tested and licensed games make it into the lobbies of reputable US casinos. Every game’s RNG (Random Number Generator) is audited for complete fairness, the online operator is also heavily monitored by the respective states' gaming board. This is what makes our recommended casinos so safe and fair.

A payout percentage is an amount paid back to players over the long term. An online slot with a payout percentage of 95% pays on average $95 of every $100 gambled on it.

Many legal online slot machines in the US have high payout percentages. We recommend 1429 Uncharted Seas (98.5%).

A common misconception of online slots is that they aren’t 100% random. Regulated online slots are completely random from one spin to the next.

Variance, or volatility, is the frequency with which a slot pays out over the long term. High-variance slots payout big jackpots infrequently. Low-variance slots pay lots of small and frequent prizes.

Yes. The best US casinos online let you try Demo Play slots with no financial risk involved. That means you can play free online slots without committing a penny to make sure you like the game.

Yes. Online slot machines are tested by independent auditors before they hit the casino lobby. Casinos will have regular audits of their software, including for their table games, to ensure fairness.

Paylines are typically horizontal combinations of symbols that award prizes. The number of paylines varies from slot to slot and can affect the volatility of the game. Some slot machine games have vertical or diagonal paylines, too.

Paylines vary from slot to slot. Classic 3-reel slots may have 1-5 paylines, while 5-reel slots can spread many thousands of win lines.

High-stakes slots allow max bets up to $500, and sometimes higher. Low-stakes slots allow for bets starting at just $0.01 a spin.

A good US casino site should have exciting games, a user-friendly lobby, and interesting bonuses. Fast deposits and withdrawals are essential, as is great customer support for players. And their bonuses should have reasonable wagering requirements that can be achieved.

Most online slots for real money have max bets around $500. However, you can often bet from just $0.01 a payline.

Yes. You can play for and win real cash. You can also withdraw your winnings to a bank account or e-wallet within a few days.

References

  1. State of New Jersey Division of Gaming Enforcement
  2. Pennsylvania Gaming Control Board
  3. Michigan Gaming Control Board
  4. US Department of Justice
  5. American Gaming Association
  6. National Council on Problem Gambling

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Contributors

Hi, I'm Jim Tomlin

"More than 20 years of experience in online gaming and journalism. I've tested, played and reviewed a multitude of slot games, looking for the best one for you that that differentiate them in terms of themes, features and jackpots."

Interests
  • Online slots
  • Soccer
  • Online casinos
  • Motorsports

Reviewer since November 2018

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