Play Online Slots for Real Money – Best Slots Sites 2023

Video slots and progressive slots are by far the most popular real money casino games but it can be difficult to find the best online casino sites to play on. The leading online slots casinos offer hundreds of games with a range of themes and features, as well as slots bonuses and promotions to help boost your profits. We reveal the top real money online casinos and the top real money slots you fill find there, plus how to start playing today.

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Is it Legal to Play Real Money Slots in the US?

Yes, online slots for real money are legal at regulated casinos in New Jersey, Pennsylvania, Michigan, West Virginia, Connecticut, and Delaware. In 2011, the Department of Justice changed the interpretation of the Wire Act from 1961. This no longer banned all forms of gambling online on a federal level throughout the United States. As a result, individual states can legalize and regulate different forms of gaming over the internet. Slot games remain the most popular of online casino games. You can also play at offshore casinos too.

Top 10 Real Money Online Slots to Play

Some online casinos can offer more than 1,000 games, so finding the best slots is not always easy. However, there are some titles that are very popular among players and we recommend checking them out.

1. Blood Suckers 2

  • Reels x Rows: 5 x 3
  • Paylines: 25
  • RTP: 96.94%
  • Developer: NetEnt
  • Free Spins: Yes

Blood Suckers 2 Online Slot

The sequel to the very popular online slot game from NetEnt comes with improved graphics and even more bonus features. Blood Suckers 2 has a high return to player rate of 96.94% and it features wilds, scatters, Blood Rose free spins with a 3x multiplier, and a hidden treasure bonus game with multiple levels. You will also benefit from random features as you spin the five reels with 25 fixed paylines.

2. Guns N’ Roses

  • Reels x Rows: 5 x 3
  • Paylines: 20
  • RTP: 96.98%
  • Developer: NetEnt
  • Free Spins: Yes

Guns N' Roses Online Slot

The American hard rock band is now available on the spinning reels. The Guns N’ Roses slot game includes a set list of five of the biggest hits from the band that will be playing in the background as you bet. In addition to the rocking soundtrack, the slots game also comes packed with features, including expanding wilds, a bonus wheel, a multi-level bonus game, free spins, and multipliers.

3. Reactoonz 2

  • Reels x Rows: 7 x 7
  • Paylines: N/A
  • RTP: 96.20%
  • Developer: Play’n GO
  • Free Spins: No

Reactoonz 2 Online Slot

Launched in 2020 by Play’n GO, Reactoonz 2 remains one of the most thrilling real money slots. It doesn’t follow the standard layout and instead shows the symbols on 7×7 grid. Matching aliens on adjacent locations will award a payout and also disappear, making room for other symbols to fall in their place. Consecutive wins fill the meter, which can trigger extra features, like special wilds of various sizes.

4. Dead or Alive II

  • Reels x Rows: 5 x 3
  • Paylines: 9
  • RTP: 96.80%
  • Developer: NetEnt
  • Free Spins: Yes

Dead or Alive II Online Slot

NetEnt’s Dead or Alive II can award payouts of more than 100,000 times the bet. It has a great theme with detailed symbols, immersive sound effects, and impressive bonus modes. All of the five bandit symbols act as wilds and can substitute for other symbols. Three or more scatters will trigger the bonus mode, allowing the player to choose from three free spins games with extra features, such as win multipliers.

5. 9 Masks of Fire

  • Reels x Rows: 5 x 3
  • Paylines: 20
  • RTP: 96.24%
  • Developer: Digital Gaming Corporation / Microgaming
  • Free Spins: Yes

9 Masks of Fire Online Slot

9 Masks of Fire is a slot game developed by Gameburger Studios for Microgaming’s Quickfire platform. It is available in the US from Digital Gaming Corporation, which also provides additional free online slots from Quickfire. 9 Masks of Fire has five reels with three rows, 20 paylines, and nine jackpots. You need to land at least three mask symbols to win the respective jackpot, which can go up to 2,000x.

6. Rich Wilde and the Tome of Madness

  • Reels x Rows: 5 x 5
  • Paylines: N/A
  • RTP: 96.59%
  • Developer: Play’n GO
  • Free Spins: No

Tome of Madness Online Slot

Developed by Play’n GO, The Tome of Madness follows Rich Wilde on a dark adventure into another world. It is played on a 5×5 grid that pays for matching symbols in adjacent positions. Consecutive wins charge the portal on the left, which will trigger special features, such as different types of wild symbols.

7. Siberian Storm Mega Jackpots

  • Reels x Rows: 5 x 3
  • Paylines: 720
  • RTP: 88.93% – 93.03%
  • Developer: IGT
  • Free Spins: Yes

Siberian Storm Online Slot

Siberian Storm is a popular slot machine from IGT that comes with a diamond layout for the five reels. The game has Multiway Xtra, which means that any combination of matching symbols on adjacent columns, from left to right and from right to left, will award a payout. It is also part of the Mega Jackpots series that can award progressive prizes of over $500,000 by landing five Mega Jackpots symbols at the same time.

8. Cleopatra

  • Reels x Rows: 5 x 3
  • Paylines: 20
  • RTP: 95%
  • Developer: IGT
  • Free Spins: Yes

Cleopatra Online Slot

When it comes to classic slot machines available online, there aren’t many titles that are as popular as Cleopatra. This IGT creation has a long history in casinos throughout the US and is also live at the best sites. The 5-reel slot has straightforward features that include a free spins mode with tripled wins, triggered by five scatter symbols.

9. Thunderstruck Wild Lightning

  • Reels x Rows: 5 x 4
  • Paylines: 40
  • RTP: 94% – 96.10%
  • Developer: Digital Gaming Corporation / Microgaming
  • Free Spins: Yes

Thunderstruck Wild Lightning Online Slot

The Thunderstruck series of slots from Microgaming, powered by DGC, is based around the Norse Gods. For the Wild Lightning slot, the focus is on the electrifying jackpots that can award wins of up to 15,000x the bet. Any of the four jackpots can be won during the Link&Win bonus game, triggered by six or more Thunderball symbols. There are also five types of free spins that can be unlocked and improved as you play.

10. Bonanza

  • Reels x Rows: Up to 6 x 7
  • Paylines: Up to 117,649
  • RTP: 96%
  • Developer: Big Time Gaming
  • Free Spins: Yes

Bonanza Online Slot

Bonanza is one of the most popular slots from Big Time Gaming. The number of symbols per reel varies as the icons can take up different sizes. There is also an extra horizontal reel on the top that adds even more symbols to the screen. Every way to win from left to right is always covered, resulting in up to 117,649 lines. Four scatters trigger free spins with an unlimited win multiplier that increases with every reaction.

How to Sign Up and Play Online Casino Slots

In order to start playing online slots for real money, you have to sign up and make a deposit. We’ll go through the steps required.

  1. Go to the site of any of our recommended casinos.
  2. Once on the homepage, hit the “Register” or “Sign Up” button.
  3. Enter any required personal details in the registration form.
  4. Verify your account.
  5. Make a deposit on the site by clicking on the “Deposit” tab (usually at the top).
  6. Open the casino section, select the slots category, and choose from the many options available.
  7. Set the size of the bet from the buttons at the bottom. These can depend on the game, but you can generally choose from a wide range of stakes.
  8. Spin the reels by pressing the large spin button.
  9. You will automatically receive a payout if you land a winning combination of matching symbols.

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Types of Popular Slot Games

There are several types of real money slots available at online casinos, which can be in their own categories or grouped all together.

Classic Slots

A classic slot game doesn’t usually come with a lot of features or flashy animations. Instead, the gameplay is simple and there are fewer symbols on the reels. Moreover, many classic slots have three reels, instead of the standard five found in more modern creations. These machines generally have a wilds and scatters, but only 1-5 paylines.

Progressive Jackpot Slots

A progressive jackpot is a prize that increases as players bet money on the game. A small percentage of the stake goes to the jackpot, which can be won at any time. The way the jackpot is awarded depends on the game. Some real money online slots with progressive jackpots use a random system available on every spin, while others award it in the bonus game.

Video Slots

Online video slots are the most popular type in this category. These cover a wide spectrum of gaming options, with some online casinos offering more than 1,000 titles. Video slots generally have five reels and three rows, often showing immersive themes and coming with bonus features, such as wilds, scatters, free spins, and bonus rounds.

How Do Real Money Slot Games Work?

Slots games are online casino games that come in many formats and cover a wide range of themes, but follow similar mechanics. The standard real money slot games will have five columns, known as reels, and three visible rows of symbols.

After placing a bet, the symbols fall in random positions on the screen. Payouts are awarded if matching symbols land on active paylines, on adjacent positions, and from the leftmost reel to the right. Some real money slots will also pay from right to left or even in any position as long as the symbols are next to each other.

The size of the payout depends on how many symbols are in the winning combination and also on the rarity of the symbol. Some icons will pay more than others because they appear less frequently on the reels.

How to Win When You Play Slots Online

Winnings are awarded automatically when you get a matching combination on the screen. Keep in mind that the symbols must be on the same payline for them to form a combination. Some real money slots can have just one line, while most slot machines have around 20-30 active lines. Other titles can have more than 10,000 lines due to an increased number of symbols.

There is no real strategy that can guarantee a win when playing slot machines. You just set the size of the bet and spin the reels. Some factors that can influence the size and the frequency of wins are the RTP and the volatility.

Online Slots Return to Player (RTP) and Volatility

The return to player (RTP) rate is a theoretical payout percentage based on the game mechanics and paytable. This is usually around 90% but some of the best online casino slots can have an RTP of over 96%. In theory, a higher RTP means better results in the long run, but short-term outcomes can vary significantly in both ways.

The volatility refers to the way the payouts are allocated. A game with a high volatility rate will rely on large wins, but these take place on rare occasions. A lower volatility means that players will receive smaller wins more frequently. This can affect the playing style and may also influence the size of the bet for longer sessions. Higher volatility means that you will need to have more spins available to cover losing periods.

Some of the new online slots sites make it easy to view the RTP and the volatility of the slots in order to better choose the right option.

How to Play Free Online Slots

A great way to practice new slots and learn how to play is to try out the demo version. This basically allows you to play slots online for free while using demo credits as a way to keep score of the results. You start with a large balance and can even try out various betting strategies in the process. Plus, if you run out, you can just refresh the game and start again.

Unfortunately, not all casinos offer free online slot games. We recommend checking out Wild Casino as the best site for free games in demo mode. Here, you don’t even have to register an account to start playing. Simply go to the site, find the game you want to play and click on the “Demo” button on the featured image. You can always switch to real money play when you feel ready for the best real money slots.

Types of Slots Bonuses at Online Slots Sites

When playing online, you can easily claim bonuses and benefit from promotions for extra funds and other perks. This gives online gaming an edge over land-based casinos, since there aren’t many establishments that will double your money as soon as you walk through the doors.

Moreover, online bonuses are often designed for playing slots as these are the games that will contribute 100% for the wagering requirement, with some exceptions. So, it is important to know what bonuses are available to you and how they work. We will cover the main types of bonuses here:

Welcome Bonuses

Generally available on the first deposit, the welcome bonus provides a big incentive to join the casino. This is usually a 100% match of the deposited amount in bonus funds, or a 100% refund on losses from the first 24 hours of play.

No Deposit Bonuses

While rare, no deposit bonuses can provide good value for casual players. Some sites will provide a no deposit bonus just for signing up, which allows players to try out a few slots for free.

Free Spins Bonus

Promotions that award bonus spins on selected slots are quite popular online, especially when it comes to new releases from top developers. Users can take part in the campaign, meet the eligibility criteria, and claim the spins to play the featured slots for free.

Loyalty Programs

A great way to earn rewards based on how much you play is through online casino loyalty programs. The details vary a bit, but the concept is often the same. You earn points for every real money bet you place and can then exchange the points for bonus credits to play games.

How to Play Mobile Slots

Online mobile slots keep the same mechanics and bonus features, while allowing you to spin the reels on mobile devices. Most modern games are compatible with iPhone and Android devices, loading directly from the browser.

The controls can change when switching from the desktop version to the mobile one in order to provide easier access. Most games have a large spin button on the right side when holding the phone in landscape view. This disappears when spinning the reels to better show the symbols and the resulting wins.

Blood Suckers 2 Mobile Slots

Some mobile slots also support portrait mode, with the spin button lower down, but this doesn’t always provide a great view of the symbols.

Furthermore, leading online slots casinos can have native apps for both iOS and Android operating systems. These are available for free download from the respective store and can be installed on the device within minutes. A mobile casino app can provide faster access to the slots, along with extra security features, such as logins via Face ID.

Best Online Slots Game Developers

When it comes to filtering down a large collection of games, going by developer can be very useful. Most providers have their own style that can be seen across multiple slots, even if the theme changes. So, if you like some options from one provider, we recommend checking out more from the same studio since you might find other appealing games. These are the top slots developers in the US:


NetEnt is a hugely popular game developer that is now available on most online slots sites. It is known for creating eye-catching options that come packed with themed bonus features. Moreover, NetEnt slots often have a high RTP, making them more profitable in the long run.


IGT became popular in land-based casinos throughout the US before it launched the online versions of its top creations. It is a player favorite, especially among those with a fondness for old-school machines, such as Cleopatra, Wolf Run, and Siberian Storm.

Play’n GO

Play’n GO is a relatively new software developer that was founded in 2005. However, it quickly became popular for its immersive online slots, many of which come with innovative features. Players can also find detailed themes with thrilling animations.

Digital Gaming Corporation

Known as DGS, this provider brings handpicked slots from Microgaming to US casinos. It powers games like Ariana, 9 Masks of Fire, Immortal Romance, and many other titles that are worth checking out for their visuals and rewarding mechanics.

Big Time Gaming

Big Time Gaming is the software developer behind the innovative Megaways feature, which allows slots to have symbols of different sizes on up to 117,649 ways to win. While the feature is licensed to other developers, BTG also uses it in its top slots, such as Bonanza.

Tips for Playing the Best Online Slots

The following tips and tricks for playing slots can help you have more fun, stay in control, and even win more. There is no sure way to make a profit from the spinning reels, but large payouts happen quite often. Check out these tips to learn how to win at online slots:

  • Practice for Free: Before betting real money, try playing free slots online. This way, you can learn the different bonus features and see if you really like the game. You can also start small and play penny slots without breaking the bank.
  • Claim Casino Bonuses: The featured online slots sites have multiple bonuses for playing slots, usually including a welcome bonus and following promotions. These can provide you with extra credits and thus more spins of the reels for free.
  • Try Out New Games: There are loads of online slots worth checking out and so you should try out different options. We recommend starting with our top 10 slots recommendations and then browsing more on the casino to see what stands out.
  • Check the RTP & Volatility: A good way to choose between more than 1,000 slots is to look for games with an RTP of over 95% and a volatility that matches your playstyle. If you are looking for large wins, also consider progressive jackpot slots.
  • Set a Budget: Play responsibly by setting a budget and spending limits for every session. Slots are meant to be fun and so you shouldn’t bet money that you can’t afford to lose. Don’t go over the limits and simply stop playing when it’s no longer fun.

The Best Real Money Online Casino for Slots: Wild Casino

Wild Casino is our top recommendation for playing slots online. It offers an impressive library of real money online slots, epic bonuses, plus ongoing promos for existing players.


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US Online Slot Casinos Resources

To learn more about the rules in different states to play online slots legally, check out the regulatory bodies here:

Vlad Grindu

Vlad has more than a decade of experience in the gambling industry, specializing in analyzing and reviewing online betting platforms. He is an expert in casino games and sports betting, providing detailed guides for major publications in the iGaming industry, including and Covers. Vlad has a Master’s Degree in Economics and enjoys the occasional esports game.