Best Casino Sites to Play Online Slots in the US

Published: Aug 30, 2020 Updated: Jan 10, 2022

Top online slots casinos for 2022 – our guide to playing real money slots online in the US. Discover the best slot machine games, types, jackpots, FREE games, and more in the article below.

Best Online Casinos to Play Slots

Detailed 888 Online Casino Review & Bonus Code

Detailed 888 Online Casino Review & Bonus Code



Party Casino Online

Party Casino Online



BetMGM Casino

BetMGM Casino



Play now
PokerStars Online Casino
PokerStars Online Casino




SugarHouse Casino
SugarHouse Casino




Tropicana Review: the Best Online Casino
Tropicana Review: the Best Online Casino




Show More

In Which States Online Casinos Are Legal?

Several states allow online slots in US for real money casino gambling with the vast majority still in in the process of application. The largest current market with more than a dozen licensed and legal casinos with online slot machines is New Jersey. Michigan is another as well as Pennsylvania and Delaware. More states as well as Tribal casinos that were held back due to lock-down, include West Virginia

Why Should You Play Online Slots for Real Money?

online slots

The most popular casino games are by far real money slots. These online casinos games offer players the ability to have fun while potentially winning. You do not need to think or make mathematical sums as real money slots online are a game of chance. However, it offers lows stakes while very easy to play and with the introduction of progressive slot machines for real money jackpots the money that can be won increased exponentially. Slots come with extraordinary features and mini-games within a game, wild symbol, scatters, bonus rounds, free spins as well as jackpots.

Progressive jackpots are a brilliant way that casinos attract players with these jackpots increasing every time a player adds funds to it. These games are played on multiple casinos simultaneously with a single winner with amounts rising to insane amounts. The sheer fun and high winning probability of slots make them the number one game in any casino.

How Do Online Slot Machines Work

Modern slot machines range from classic 3-reels, 5 reels to mega reels, but they all work on the same basic principle. Our experts tell you more about how these works to help you understand how slot machines operate:

Auto Start/Auto Stop

Players have an advantage of using auto-spin which is a feature that most online slots have. This means they can set their bet amount, choose a specific number of spins, for example, 20 x spins and let the machine spin itself without the need to respin every time a spin is complete. A slot will be able to auto spins, auto start as well as stop.


When you hear how may lines a slot machine has, it might sound confusing at first, but it is straightforward. Lines can vary from 3 or 5 to hundreds or even thousand plus. The higher the number of lines means there are more ways to win as you can bet on so many lines. If you hear a slot has hundreds of winning lines, it is no reason to think it will be confusing and at the same time can these lines run in any direction from diagonal, vertical horizontal while others run across reels or in a zig-zag shape.

Bet Per Line

The difference in lines is its adjustability. Some US slots online have fixed lines which means you cannot adjust a bet, but betting is on all lines while others allow you to choose on how many lines you want to bet. These are adjustable lines and you can choose to bet specific amounts on lines that you choose.

Bet Max

When you don’t feel like continuously choose a bet or decide to bet the same amount on all your spins at maximum bet, you have that option unless you play at free slots. Simply use a bet max button on the slot and every bet that you spin is at its highest possible bet.


There is one button that you use to spin while it doubles as a stop button too. You can press the button to start the reels and when you want it to stop immediately without finishing its cycle, press stop and all the reels with come to a halt.


Not all slots have this feature, but it is something that most players relish as it adds to the excitement of a win. Slots that have this feature allows players to double their winnings by choosing either a card colour or suit. It is a 50/50 choice with the downside if you pick wrong, you lose your entire winnings. A large number of Microgaming slots feature a gamble button and allows players numerous chances to continue doubling.


When you won a hand on a slot with real money gambling and you decide not to gamble the winnings, or continue playing, you press collect. This will end the game and you can play at another slot when the current coins are transferred to your player’s account.

Slots Bonuses

Players have plenty of opportunities to play longer and win more with an abundance of welcome bonuses and loyalty rewards offered by online casinos with a vast number of top slots. These include:

Welcome Bonus

Players that register an account at an online casino is rewarded by a welcome bonus. This is something that all casinos offer unless you choose to play in free mode (demo) with the main difference that they offer different kinds of welcome bonuses. You often have a combination of more than one bonus type, for example, may operators like to combine a no deposit bonus with a matching deposit bonus, etc.

No Deposit Bonus

No deposit slots bonuses are what most players want as these are for new registration which gives players either cash money bonuses or most popular is free spins. No deposit means you are not gambling with your funds and when you get free spins, casinos often have prerequisites which slots are eligible for free spins.

Match Deposit Bonus

Matching deposit bonuses are at most online casinos. Here operators offer new players a percentage of what the player deposits. The most common is 100% match bonuses while it is not uncommon to get varied percentages like 200 or even 500%. You might get a 100% matching bonus for your 1st deposit and up 10 your 3rd – 5th deposit with varying percentages for each.

Bonus Time Limits

Every bonus regardless of its type and what the wagering requirements are, have a time limit. This is just as important as the wagering requirements when you look at online casino bonuses. For example, you might get a no deposit bonus with great wagering requirements of 10 x playthrough but the time limit to meet these wagering requirements might be short like 3 days. You might not have adequate time to meet these requirements. Other time limits range from 7 days, 14 days or even 30 days. It is something that plays a role when you look at slot’s bonuses at gambling websites.

Bonus Wagering Requirements

Wagering requirements are the number of times you must rollover a bonus before attempting to withdraw funds. You always look at the bonus type then at the wagering requirements or play through as many calls it as well. Good playthrough requirements range from 20 x to 35 x with 35 x in the middle as higher than that is considered steep. You get lower wagering requirements too which are scares while you get zero wagering which is even more difficult to find.

Finding the Best Bonus Spins at the Top Online Slots

online slots

To find the best bonus spins, you must find the best slot machine first.

  • Look at the highest RTP online slots as you want one with the highest return to player percentage.
  • The next thing you look out for is the slot volatility. Low volatility slots give better winning chances with increased winning combinations. A high volatility slot pays more when you do strike it lucky, but the winning combinations are few and far apart.
  • Avoid penny slots to increase your playtime and choose a slot where you can place higher bets instead. If you do play on penny slots do not be tempted to continue betting at its lowest but raise your bet level to maximum.
  • Pick your platform from one of our recommended slot casinos where we list the best bonus.

Popular Real Money Slots

  • Kitty Glitter – renowned slots developer IGT is behind the 30-paylines, 5 reels slot with cool feline symbols. It is an instant -play slot with free spins, scatters as well as wilds. 3 scatters ensure a bonus game as well as 15 free spins. Access this slot via desktop or mobile for real money or free.
  • Family Guy – another top slot from IGT that comes from the television show “Family Guy” with its graphics, icons and music from the show. Here players get a 3 x 5-reel games with 6 progressive jackpots. Here too players get bonus games within and ready for play on desktop, Android or iOS.
  • Hexbreaker 2 – yet another IGT favourite slot with 720 winning ways with a minimum bet of $0.50 while you can bet up t- 2, 500 coins. Play it on any device from desktop to mobile.
  • Siberian Storm – another 729 ways to win slot from IGT with 5 reels, it has an RTP of 96%. Play it for free or real money via mobile and desktop.
  • Double Diamond – from developer IGT, Double Diamond is 3 reels, 5 paylines slot with 27 ways to win that includes bonus rounds, multipliers as well as wilds. Players can access it in free to play and real money mode across mobile as well as desktop.
  • Age of the Gods – as a top Playtech slot that you can play via desktop as well as mobile it offers an ancient Greek Mythology theme. It features bonus rounds with 4 different rounds of free spins as well as colossal wins.
  • Deal or No Deal – the developer, Gaming 1 designed this slot based on the TV show of the same name as a 10 fixed paylines, 5 reels slot that has 2 different mini-games hidden within that players can unlock.
  • Thunderstruck II – as the sequel of the top game Thunderstruck, this Microgaming slots features 5 reels as well as 243 winning ways. The Norse mythology slot has brilliant symbols including wilds, scatters and numerous bonuses to unlock
  • Starburst – a top slot that everyone knows is from NetEnt with 10 paylines, 5 reels and a whopping 50, 000 potential win that features bonus rounds. Play it on any device from desktop to mobile to start winning re-spins with wilds, scatters, etc.
  • Gonzo’s Quest – another leading NetEnt slot featuring 20 paylines, 5 reels plus plentiful features including wild, scatters, etc that unlocks bonus rounds and free spins.
  • Buffalo slot – this top slot comes from Aristocrat and called the most-played slot as it is one of the most popular across all casinos both land-based as well as online. Its brilliance lies in zero paylines but 1024 winning ways. Play it for real money or free on any device. While it only has an RTP of 94.58% it comes with bonus rounds, free spins, wilds and scatters.
  • Zeus slot – WMS Gaming is the developer of another highly popular Greek mythology slots, Zeus. It is available of desktop and mobile, for free and real money with bonus rounds, wilds, free spins, etc.
  • Book of Ra – the top developer Novomatic has released Book of Ra that already has six instalments of this hugely popular games. This modern-day adventure theme also combines ancient Egypt within the games with scatters, bonus rounds, wilds and mini-games within. Play it for free or real money on your mobile or desktop.
  • Rainbow Riches – from developer Barcrest it is a 10 paylines, 5 reels slot with 18 winning combinations. Here you should also look out for scatters and wilds that unlock bonus rounds via mobile and desktop play.
  • Cleopatra slot – IGT is the developers on a slot that has been called by numerous as the number one online game. Based on Egyptian queen it is thrilling with plenty of winning opportunities with wilds, scatters, and free spins while you unlock bonus rounds.
  • The Walking Dead – based on the tv series of the same name, the Walking Dead comes from Aristocrat. In 2014 it was named slot of the year for its incredibly clever play, multiple bonus rounds and innovative features that no other game has. It is also one of the top progressive jackpot slots.

Biggest Jackpots Winnings

online slots jackpotIt is more than Las Vegas land-based casinos and Vegas slot machines that offer progressive jackpots with astonishing jackpot amounts as online casinos rival these scales. The largest-ever online jackpot that was won which is listed in Guinness World Record is Mega Moolah online amount of £13.2 million. It was won in 2015 by gambler Jon Heywood a British national. Another massive jackpot win includes the Dark Knight that paid out AUD$10.4 million.

Real Money Slots Vs. Free Games

  • More Bonuses: The top casino sites offer exclusive bonuses from time to time through which you can play for free and earn rewards. But with the free version, you can play as many times as you want but cannot win real money rewards. 
  • Casino Registration: In free games, no registration is required, but in real money, it’s needed. It’s because you play for and earn real money, and you also have to add a payment method.
  • Cash Payouts: Real money slot machines give you payouts based on the winning combination you have made. But free slots are only to have fun, and here even if you do not win, there is nothing to lose. Play slots to win real money, and you can enjoy great rewards. It is better to learn the tricks for free and opt for the real money version.  

Slots Winning Strategy

  • Play Higher Denomination Slots: Playing a higher denomination slot machine online will give you more payback percentage with entertainment value. Dollar slots provide more percentage than quarter slots, so play there. 
  • Play Progressive Slots And Qualify For Jackpots : On progressive slots, a percentage wager is added to jackpots. They are the main events and ensure the bets you place qualifies you for jackpots. In this way, the online slots’ real money will give you more revenues. 
  • Choose Games Wisely : Before starting, choose the games wisely, so you are aware of every aspect. Making a wrong move can waste all the money that you have invested in a wager. Read through the general guidelines and concentrate on making a winning combination. 
  • Play Within A Budget : Fix your budget before you start playing casino slots online. It assures you how much you are interested in investing, and once you have reached the upper limit, irrespective of whether you win or lose, stop playing. 

 Multiplayer Slots Tournaments

Multiplayer tournaments are hosted at plenty of the best casinos, for example, 32Red Casino. These tournaments are free to enter while they have varying prize pools ranging from $50 to $200. As soon as players enter a paid entry tournament, however, prize pools increase significantly to $20, 000 plus. Top software developers who were the only ones to have accepted US players before online gambling was legalized were WGS as well as IGT casino. Casinos like Hard Rock, Party Casin or 888casino and more offers slots tournaments with bonus prizes from $100 to $5000. Players can choose between scheduled as well as sit and go tournaments.


Are real money slot games rigged or fair? Are the games safe?

Slots online to win real money are most definitely nor rigged or all casinos would be closed by now. When you choose an online casino, it must be one that clearly says on its home page that games are fair and operate with a random number generator. Licensing bodies like Gibraltar, Malta, the UK Gaming Commission, etc. makes sure that games are safe and fair while our reviewed casinos are the best casino brands that our experts tested.

Why do I need to submit documents to make a withdrawal?

The best online casinos with real money slot machines require players to submit documents to verify their identity. This is done to verify that a player is indeed who he or she says they are. It safeguards a player’s account so that nobody else can hack their account and make a withdrawal request. Usually, only first-time withdrawals require that players submit verification documents.

What is a payout percentage? What is RTP?

RTP stands for return to player. For example, when playing at online slots real money with an RTP of 97%, it means for every $100 that a player gambles, he will get a payout of $97. This is independently tested by third parties at licensed and regulated casinos to ensure players have a fair chance. That is why players are urged to look at best online slots payout percentage with higher RTP as the winning chances are better.

What is a welcome bonus for new players?

A welcome bonus is given to new players as a way for an online casino to thank them for registering and given to players who played online slots with real money. With the thousands of online casinos, competition is tight and this is how casinos attract players to join.

Are online slots legal in PA/ New Jersey?

Yes, Pennsylvania, as well as New Jersey, are two of the first states that immediately applied for online casino gaming licenses.

How do I know these casinos aren't scams?

Casinos that we list as well as casinos that operate under license from Pennsylvania and New Jersey are licensed through the Division of Gaming Enforcement under individual state licenses as well as other licensing bodies like Malta Gambling Commission. This ensures that the casinos are regulated and fair with safe gambling.

How do you play slots for real money? Which slot machines have the highest payout?

Look at slot machines RTP, the higher RTP the higher a payout will be. Jackpot Slots with high volatility also offer the highest payouts with less frequent small payouts.

How much tax is taken from casino winnings?

Gambling winnings in the US is taxable and the percentages depend on games type. For example, when you win a jackpot casinos are legally obliged to withheld 25% from US gamblers and also supply players with an IRS form requiring players to report winning to US government.

How does depositing and withdrawing work in gambling transactions?

Players make a deposit using real money using a variety of methods that include paynearme, Instadebit, Skrill, Mastercard, Visa, iDebit as well as PayPal to name a few. These funds go to a casino account. When you win real money, access a cashier at a casino and request a withdrawal. Depending on processing periods of a casino your funds will be transferred to your preferred payment method.

Back to top