Best Online Slots Sites 2023 – Play Top Real Money Slots

The leading online slots sites offer hundreds and even thousands of games, covering a wide range of themes, styles, and bonus features. Moreover, you can benefit from massive bonuses and frequent promotions to help boost the profits from the spinning reels.

Online slots are by far the most popular casino games and it can be difficult to find the best sites. In this guide, we will provide detailed reviews of the top casinos online, go through the legal aspect of gambling online for real money, and much more. Continue reading to learn all about the best slots, the top sites, and how to start playing today.

Top Online Casinos for Slot Games

  1. BetMGM – The best online casino for playing slots in the US, offering more than 2,800 options and a generous welcome bonus that can go up to $1,000.
  2. FanDuel – Play the featured online slots for the chance to win your share of the $65,000 prize pool available every month, on top of other exclusive promotions.
  3. BetRivers – Browse one of the best libraries of online slots in the US and choose from more than 100 progressive jackpot games with prizes that can exceed $500,000.
  4. DraftKings – Choose from two welcome bonuses before checking out the many slot games, including DraftKings exclusives with a shared progressive jackpot of over $2 million.
  5. Caesars – The most rewarding loyalty program for online and land-based casino gaming, giving players points that they can redeem for bonus credits and other perks.
  6. Barstool – Join the PENN Play rewards program and claim points on every game in order to unlock unique benefits and special promotional offers for slots.
  7. Bet365 – Offers a mix of slots from IGT, Playtech, NetEnt, and other developers, along with exclusive creations under the Bet365 Games studio for more variety.
  8. Borgata – Claim a $20 sign-up bonus, a 100% first deposit bonus, and other offers for slots and take part in the exclusive Borgata Bucks jackpot draws.
  9. Betway – Browse selected slots for real money from Microgaming, NetEnt, IGT, Yggdrasil, Scientific Games, and other providers and play online and on mobile.
  10. WynnBet – The most straightforward loyalty program for online slot machines, with points that can instantly be redeemed for bonus credits to keep the reels going.

Reviews of the Best Online Slots Casinos

Given the popularity of online slots, you can find various games at any of the top online casinos in the US. However, the collection varies from one site to another and there are also other factors to take into account, like the bonuses, the banking methods, and the customer support service. Learn more about the best 10 online slots sites from the following reviews:

1. BetMGM – The Best Library of Online Slots Games in the US

Casino facts:

  • Website: betmgm.com
  • Payout time: 3-5 days
  • Established: 2018
  • License: Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: New Jersey, USA
  • Available states: Michigan, New Jersey, Pennsylvania, West Virginia

BetMGM Casino Online Slots Site

Our Verdict (9.6/10)

BetMGM is one of the biggest brands for online casino gaming in the US. Operated by both MGM Resorts International and Entain (formerly known as GVC Holdings), the platform comes with an impressive library of games and has the backing of a renowned casino operator. MGM runs more than 20 resorts throughout the country and online casino players can use the earned rewards points in any of these locations.

BetMGM Casino is now available in four states, with licenses from the local regulatory bodies. Players can connect to the site directly or use the native mobile apps to play the games on iPhone or Android devices.

After a quick sign up, BetMGM customers will receive a $25 no deposit bonus for slots. There is also a 100% welcome offer available on the first deposit that goes up to $1,000. Additional promotions are available every week and these can include extra jackpot drops, leaderboard competitions, and rewarding “Bet & Get” offers for selected games.

Moreover, BetMGM Casino has the best collection of slots, with over 2,800 options currently on the platform. Availability can depend on the state, but you can generally find titles from IGT, NetEnt, Everi, High5, Play’n GO, Novomatic, EveryMatrix, Ainsworth, and other studios. Some slots share a progressive jackpot worth over $2 million.

Sections Overview

  • Bonuses: 10/10
  • Desktop Experience: 10/10
  • Mobile Experience: 10/10
  • Registration Process: 10/10
  • Account Verification: 9/10
  • Payment Methods: 9/10
  • Casino: 10/10
  • Live Casino: 9/10
  • Customer Support: 9/10
  • Responsible Gambling: 10/10

BetMGM Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Sign-Up Bonus $25 Casino Bonus N/A 1x No Deposit
Welcome Bonus 100% Match up to $1,000 N/A 15x $10

Pros & Cons:

Pros:

  • More than 2,800 slots from top developers
  • Massive progressive jackpots on the network
  • New slot games added to the site every month
  • Welcome bonus includes $25 for signing up
  • Online casino promotions target slot games

Cons:

  • Doesn’t have the fastest casino withdrawals

2. FanDuel – Play Exclusive FanDuel Casino Slots and Win Daily Jackpots

Casino facts:

  • Website: casino.fanduel.com
  • Payout time: 1-2 days
  • Established: 2009
  • License: Connecticut Department of Consumer Protection, Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: New York, USA
  • Available states: Connecticut, Michigan, New Jersey, Pennsylvania, West Virginia

FanDuel Casino Daily Jackpots Online Slots Site

Our Verdict (9.5/10)

FanDuel was already one of the leading Daily Fantasy Sports operators before it launched its standalone online casino in 2021. Starting in New Jersey, it later expanded into other states with regulated real money gaming online. While it is called Mohegan Sun Casino in Connecticut, the site uses the same FanDuel platform found in states like New Jersey and Pennsylvania.

As a result, players can easily access the site and enjoy a variety of online casino slots. FanDuel has quite a few exclusive creations that share a progressive jackpot, awarded daily. This prize can exceed $25,000 and players can win it from any of the 50+ Daily Jackpots slots on the site. Around 500 other options are available as well.

The casino ensures safe transactions through multiple payment methods, including Visa, Mastercard, PayPal, Venmo, Apple Pay, Play+, PayNearMe, and online banking. The limits are more than reasonable as FanDuel is one of the best $10 deposit casinos, but it also caters to high rollers.

After making a first deposit, new players benefit from a money-back guarantee on the first 24 hours, up to $1,000. If you lose, you receive the cash back to try again. Other appealing slots promotions at FanDuel include weekly sweepstakes drawings with large prizes, daily spins of the Reward Machine for extra bonuses, and referral bonuses, all of which only have a 1x wagering requirement.

Sections Overview

  • Bonuses: 8/10
  • Desktop Experience: 10/10
  • Mobile Experience: 10/10
  • Registration Process: 10/10
  • Account Verification: 9/10
  • Payment Methods: 10/10
  • Casino: 9/10
  • Live Casino: 10/10
  • Customer Support: 9/10
  • Responsible Gambling: 10/10

FanDuel Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Welcome Bonus 100% Refund on Losses, up to $1,000 N/A 1x $10

Pros & Cons:

Pros:

  • Progressive jackpots awarded every day
  • Special promotional giveaways for slots
  • Convenient banking methods with low limits
  • Ensures fast withdrawals for winnings
  • Fair play bonuses with a low 1x rollover

Cons:

  • Casino is missing a dedicated rewards program

3. BetRivers – Play Rush Race Slot Tournaments with Large Prize Pools

Casino facts:

  • Website: betrivers.com
  • Payout time: 0-3 days
  • Established: 2012
  • License: Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: Illinois, USA
  • Available states: Michigan, New Jersey, Pennsylvania, West Virginia

BetRivers Casino Online Slots Tournaments

Our Verdict (9.3/10)

BetRivers is the official online casino launched by Rush Street Interactive in the US. As one of the biggest companies in the casino industry, it provides a reliable and secure gaming platform for online gaming. The operator is already licensed in multiple states and plans on expanding further as more markets legalize online casinos.

Inside, players can find an impressive library of over 1,500 games, featuring slots from the likes of NetEnt, Scientific Games, IGT, AGS, Konami, Big Time Gaming, and Red Tiger. Having top developers on the platform not only ensures a large collection of options, but also a high level of quality for the spinning reels.

BetRivers Casino hosts exclusive tournaments with large prizes. Known as Rush Race events, these slot tournaments can award big payouts every day. To take part in the action, simply buy a tournament entry from the Bonus Store using your accumulated points. Come back to the event after it starts and play your rounds to score points for the chance to win big.

The iRush Rewards program also unlocks other perks as you play on the site, including luxury gifts, exclusive promotions, and boosted points. New players can start with a 100% welcome bonus to double their bankroll and then check out the many slots for real money.

Sections Overview

  • Bonuses: 9/10
  • Desktop Experience: 10/10
  • Mobile Experience: 10/10
  • Registration Process: 10/10
  • Account Verification: 9/10
  • Payment Methods: 8/10
  • Casino: 9/10
  • Live Casino: 10/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

BetRivers Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Welcome Bonus 100% Match up to $500 CASINO500 10x $10

Pros & Cons:

Pros:

  • Outstanding variety of online slot games on the site
  • Fast casino withdrawals approved immediately
  • 100% welcome bonus with a good wagering rate
  • Online casino licensed in PA, NJ, MI, and WV
  • Daily slot tournaments and random draws

Cons:

  • Could use more banking methods for withdrawals

4. DraftKings – Play 100+ Slots with Progressive Jackpots of over $1,000,000

Casino facts:

  • Website: casino.draftkings.com
  • Payout time: 0-2 days
  • Established: 2012
  • License: Connecticut Department of Consumer Protection, Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: Massachusetts, USA
  • Available states: Connecticut, Michigan, New Jersey, Pennsylvania, West Virginia

DraftKings Casino Online Slots Jackpots

Our Verdict (9.2/10)

DraftKings is a popular betting brand in the US that started as a Daily Fantasy Sports operator back in 2012. In more recent years, the company focused on online sports betting and casino games, being among the first brands to launch in regulated states. It is a top choice in New Jersey, Pennsylvania, Michigan, and West Virginia, and even secured an online casino license in Connecticut.

DraftKings stands out as one of the best online slots sites with a selection of over 1,000 options from renowned developers. We also found more than 100 slots with progressive jackpots. In fact, many exclusives and iconic titles share a DraftKings progressive jackpot network that can award prizes of over $1 million on a regular basis. You can also check out the demo version and try out the best online slots for free before betting cash.

Banking is handled well, despite having multiple products to choose from on the same site. During our DraftKings review, we were able to easily add funds through cards, web wallets, prepaid cards, and bank transfers. New customers can choose between two casino welcome bonuses on the first deposit.

Sections Overview

  • Bonuses: 8/10
  • Desktop Experience: 9/10
  • Mobile Experience: 10/10
  • Registration Process: 9/10
  • Account Verification: 9/10
  • Payment Methods: 10/10
  • Casino: 9/10
  • Live Casino: 10/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

DraftKings Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Bonus Match Offer 100% Match up to $2,000 N/A 15x $5
Casino Credit Offer 100% Match up to $100 N/A 1x $5

Pros & Cons:

Pros:

  • Big progressive jackpots up for grabs from slots
  • Exclusive giveaways for earning Crown points
  • Can play free slots online and practice on the site
  • Two casino offers for different bankrolls now available
  • Leaderboard prize pool of $400,000 for active users

Cons:

  • Doesn’t always have casino promotions running

5. Caesars – Take Advantage of the Caesars Rewards Program for Online Slots

Casino facts:

  • Website: caesars.com/sportsbook-and-casino/csn/
  • Payout time: 0-2 days
  • Established: 1996
  • License: Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: Nevada, USA
  • Available states: Michigan, New Jersey, Pennsylvania, West Virginia

Caesars Casino Online Slots

Our Verdict (9/10)

Caesars is easily one of the most popular casino brands in the world. The main company, Caesars Entertainment was founded in 1996 and continues to have its headquarters in Reno, Nevada. It owns more than 50 properties across multiple casino brands, including Harrah’s, Tropicana, and Horseshoe.

In 2021, Caesars Entertainment acquired William Hill, a renowned betting brand, in order to expand online in the US. As a result, the Caesars Online Casino may appear as being at WilliamHill.com in certain states, like New Jersey. The company also owns the World Series of Poker and can redirect players to the online poker room with ease.

Despite the different Caesars Casino brands available online, the main platform remains the same. There can be some variations from state to state, but players can generally expect to find more than 500 online slots, along with various other games. It features titles from NetEnt, Scientific Games, Yggdrasil, IGT, Slingo, and other licensed developers.

The bonuses can also depend on the state. Caesars Casino players are normally welcomed with a sign-up bonus of 25 spins, no deposit needed, plus a 100% match on the first transaction. Plus, online players benefit from the Caesars Rewards program, earning Tier Credits and Reward Credits for every bet to advance in levels and redeem the points for online and offline perks.

Sections Overview

  • Bonuses: 9/10
  • Desktop Experience: 9/10
  • Mobile Experience: 9/10
  • Registration Process: 9/10
  • Account Verification: 9/10
  • Payment Methods: 9/10
  • Casino: 9/10
  • Live Casino: 9/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

Caesars Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Sign-Up Offer 25 Reward Spins SPINS25 10x No deposit
Casino Welcome Offer 100% Match up to $2,000 N/A 10x $20

Pros & Cons:

Pros:

  • 25 bonus spins on registration, worth $1 each
  • Large casino welcome bonus of up to $2,000
  • Mix of classic slot machines and modern slots
  • Caesars Rewards with offers in 50 destinations
  • Mobile apps are easy to use on iOS and Android

Cons:

  • Bonus wagering must be met within seven days

6. Barstool – Check Out the Best Slots on the Casino Floor and Play Online

Casino facts:

  • Website: barstoolsportsbook.com/casino
  • Payout time: 1-2 days
  • Established: 2003
  • License: Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board, West Virginia Lottery Commission
  • Headquarters: New York, USA
  • Available states: Michigan, New Jersey, Pennsylvania, West Virginia

Barstool Casino Online Slots

Our Verdict (8.8/10)

Barstool Sportsbook & Casino has grown to become a popular brand for online betting and is now available in four states. The interface has a unique design that can take a bit to get used to. Users can find the casino section from the menu on the left and then browse more than 300 games on the site.

In addition to featured images, the lobby also presents the minimum and maximum bets, with extra info regarding the RTP, features, and paylines. This can help players find the perfect online casino slots to fit their bankroll and playing style. There are also some Barstool exclusive options worth checking out, with Legendary Larry coming highly recommended for its progressive jackpot.

Online players will benefit from the PENN Play loyalty program, where they can earn points by betting. There are exclusive giveaways within the program as part of special promotions that can award $1.5 million in prizes. After depositing through any of the available payment methods, you will benefit from a 100% insurance on your casino bets for the first 24 hours, up to $1,000.

Sections Overview

  • Bonuses: 8/10
  • Desktop Experience: 9/10
  • Mobile Experience: 10/10
  • Registration Process: 9/10
  • Account Verification: 9/10
  • Payment Methods: 9/10
  • Casino: 7/10
  • Live Casino: 9/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

Barstool Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
New Player Casino Insurance 100% Refund on Casino Losses, up to $1,000 N/A 5x $10

Pros & Cons:

Pros:

  • Extra promotions every month for slots players
  • Highlights slots found in casinos in your state
  • Wide betting limits, starting from $0.01 per line
  • Access to the PENN Play rewards online & on apps
  • Casino insurance for a refund on losses in the first day

Cons:

  • Doesn’t have as many online slots as other sites

7. Bet365 – Handpicked Online Slots from the Best Developers in the US

Casino facts:

  • Website: bet365.com
  • Payout time: 0-24 hours
  • Established: 2000
  • License: New Jersey Division of Gaming Enforcement
  • Headquarters: UK
  • Available states: New Jersey

Bet365 Casino Online Slots

Our Verdict (8.6/10)

Bet365 is one of the top online betting brands in Europe and it is growing in popularity in the US as well. Although it is only available in New Jersey at this time, the gaming site stands out as one of the top online slots casinos. It is fully licensed and regulated by the Division of Gaming Enforcement in the Garden State and ensures a safe gaming platform.

During the Bet365 New Jersey review, we found premium games from top developers, like Playtech, IGT, and NetEnt. It also has its own Bet365 Games creations for extra options. The site is as simple as they come, with only a few styling touches. The good news is that the games are presented well, with large images and extra information regarding the reels, lines, RTP, volatility, and slots features.

The extra details make it easy to compare multiple slots and pick the preferred ones. There is also a category for bonus slots in the lobby, highlighting games with bonus rounds that can result in large wins. As for the jackpots category, this is quite slim and only has a few gaming options at this time.

The online casino offers a 100% welcome bonus that is great for playing slots, although the 20x wagering requirement is quite high. The 50% weekend reload bonus can be more beneficial as it only has a wagering rate of 10x for the total sum. Additional bonuses are available through the “Everyone’s a Winner” campaign that grants rewards for playing.

Sections Overview

  • Bonuses: 7/10
  • Desktop Experience: 8/10
  • Mobile Experience: 9/10
  • Registration Process: 9/10
  • Account Verification: 9/10
  • Payment Methods: 10/10
  • Casino: 7/10
  • Live Casino: 8/10
  • Customer Support: 9/10
  • Responsible Gambling: 10/10

Bet365 Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
New Player Bonus 100% Match up to $1,000 N/A 20x $10

Pros & Cons:

Pros:

  • Premium slots with high-end graphics
  • Extra info for RTP, volatility, and more
  • Bet365 originals with thrilling features
  • Simple deposit and withdrawal options
  • Dedicated help section for more details

Cons:

  • High wagering rate for the welcome bonus

8. Borgata – One of the Top Online Slots Sites with Daily Jackpot Drops

Casino facts:

  • Website: casino.borgataonline.com
  • Payout time: 0-24 hours
  • Established: 2003
  • License: New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board
  • Headquarters: New Jersey, USA
  • Available states: New Jersey, Pennsylvania

Borgata Casino Slots Borgata Bucks

Our Verdict (8.6/10)

Operated by BetMGM, Borgata Online Casino comes with an impressive library of slots and various other games. It also has the backing of a trusted operator and guarantees safe and secure banking through convenient payment methods. The site is now live in New Jersey and in Pennsylvania, which makes it a bit less popular than some of the other casinos covered above.

The good news is that it has loads of thrilling games and the bonuses to match. A major highlight is the collection of over 2,100 slots that cover classics, jackpots, bonus games, and the latest releases from Microgaming, NetEnt, IGT, Novomatic, Red Tiger, High5, Play’n GO, and other studios.

The online casino hosts exclusive jackpot drops known as Borgata Bucks. These are special events where players just have to bet on the featured slots to be eligible for random jackpots. Some of the events have a shared jackpot pool, meaning that one player wins half of the jackpot, and the other half is shared by all eligible players.

As one of the best New Jersey online casinos, Borgata offers generous bonuses, especially for new players. There is a $20 no deposit bonus for signing up and a 100% match on the first deposit. Promos often feature top slots and some campaigns can even award vacations to a Borgata casino resort with the credits to play the slots live.

Sections Overview

  • Bonuses: 8/10
  • Desktop Experience: 9/10
  • Mobile Experience: 9/10
  • Registration Process: 8/10
  • Account Verification: 8/10
  • Payment Methods: 9/10
  • Casino: 9/10
  • Live Casino: 8/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

Borgata Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Sign-Up Bonus $20 Casino Bonus N/A 1x No Deposit
Welcome Bonus 100% Match up to $1,000 N/A 15x $10

Pros & Cons:

Pros:

  • Borgata Online Rewards provide exclusive offers
  • Multiple slots promotions with large prizes
  • More than 2,100 online slot machines right now
  • Secure banking methods with same-day approval
  • 24/7 customer support by live chat and email

Cons:

  • Only available in a couple of states at this time

9. Betway – Enjoy More than 400 Mobile Slots for Real Money Wins

Casino facts:

  • Website: betway.com/casino
  • Payout time: 1-2 days
  • Established: 2006
  • License: New Jersey Division of Gaming Enforcement, Pennsylvania Gaming Control Board
  • Headquarters: Malta
  • Available states: New Jersey, Pennsylvania

Betway Casino Online Slots

Our Verdict (8.4/10)

With a large following in Europe, Betway already had loads of experience when it launched in New Jersey in August, 2021. It also didn’t waste any time expanding in Pennsylvania that same year and is now looking at other states with legal online slots sites.

The platform comes with a mobile-friendly design and a collection of titles from multiple developers. In total, we found more than 400 slots, along with various other games on the site. The lobby makes it easy to browse and play the games on desktop computers and mobile devices. You can expect fast loading on iPhone and Android smartphones.

The online casino is a bit lacking when it comes to bonuses and promotions. However, you can claim a 100% welcome bonus on the first deposit and then access a calendar of offers after signing in on the site. We recommend checking the wagering requirement in advance as the rate can go up to 30x, which is higher than what some of the other top online slots sites require for their bonuses.

Sections Overview

  • Bonuses: 7/10
  • Desktop Experience: 8/10
  • Mobile Experience: 9/10
  • Registration Process: 9/10
  • Account Verification: 9/10
  • Payment Methods: 8/10
  • Casino: 8/10
  • Live Casino: 8/10
  • Customer Support: 8/10
  • Responsible Gambling: 10/10

Betway Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
New Customer Offer 100% Match up to $1,000 N/A 30x $10

Pros & Cons:

Pros:

  • Slots from NetEnt, Microgaming, Scientific, IGT
  • Multiple banking methods for deposits and withdrawals
  • 100% casino welcome bonus and monthly promos
  • Improves the library with new slots every month

Cons:

  • High bonus wagering requirement at 30x

10. WynnBET – Simple Rewards for Extra Bonuses on Slots Online

Casino facts:

  • Website: wynnbet.com
  • Payout time: 2-3 days
  • Established: 2020
  • License: Michigan Gaming Control Board, New Jersey Division of Gaming Enforcement
  • Headquarters: Nevada, USA
  • Available states: Michigan, New Jersey

WynnBET Casino Online Slots Jackpots

Our Verdict (8.3/10)

Although lower in our ranking, WynnBet is definitely one of the best online slots sites in the US. First of all, the Wynn Resorts brand is popular with casino players in the US and also in Macau. As a result, the online gaming site is safe, secure, reliable, and operates with licenses in New Jersey and Michigan. We also expect WynnBet to launch in other states soon.

As for the gaming site, the theme looks dated and the color scheme can use some work. The good news however is that the casino has more than 1,000 slots and it will take a while to browse the full list. There are some extra categories in the lobby for WynnBet exclusives, slots with Rapid Rewards bonuses, Mega Jackpots, Mega Drops, high-limit slots, and more.

You can even browse by developer from the lobby, with IGT, NetEnt, Konami, High5, Big Time Gaming, and Ainsworth being quite popular among slots players.

Moreover, WynnBet Casino has a 100% welcome bonus, reload bonuses, game of the week promotions, and a dedicated rewards program. Players collect FREECREDIT when betting on the games and can then go to the Rewards Store to redeem casino bonuses for free.

Sections Overview

  • Bonuses: 8/10
  • Desktop Experience: 8/10
  • Mobile Experience: 8/10
  • Registration Process: 9/10
  • Account Verification: 8/10
  • Payment Methods: 8/10
  • Casino: 9/10
  • Live Casino: 8/10
  • Customer Support: 7/10
  • Responsible Gambling: 10/10

WynnBET Casino bonus:

Bonus name Bonus amount Promo code Wagering Requirements Minimum Deposit
Welcome Bonus 100% Match up to $1,000 N/A 10x $30

Pros & Cons:

Pros:

  • Easy to earn points and redeem them for bonuses
  • Can filter slots by main features and providers
  • Online slot games for all bankroll sizes on the site
  • IGT’s Mega Jackpots can easily exceed $500,000

Cons:

  • Offers limited casino promotions

Comparison of the Best Online Slots Casinos

To sum up the reviews and to make it easier for you to find the perfect site, we present the following comparison table. Check out which online slots sites have the best bonuses, what platforms host the most games, and where you can find the most progressive jackpots.

Casino Number of Slots Welcome Bonus Number of Jackpots Withdrawal Processing Available on Mobile
BetMGM 2,800+ 100% up to $1,000 + $25 60+ 3-5 days

FanDuel 500+ 100% Refund, up to $1,000 80+ 1-2 days

BetRivers 1,500+ 100% up to $500 100+ 0-3 days

DraftKings 1,000+ 100% up to $2,000 110+ 0-2 days

Caesars 500+ 100% up to $2,000 + 25 Spins 10 0-2 days

Barstool 300+ 100% Refund, up to $1,000 6 1-2 days

Bet365 250+ 100% up to $1,000 4 0-1 day

Borgata 2,100+ 100% up to $1,000 + $20 110+ 0-1 day

Betway 400+ 100% up to $1,000 10 1-2 days

WynnBET 1,000+ 100% up to $1,000 90+ 2-3 days

Are Online Slots Legal in the US?

Yes, online casinos are legal in multiple states and slots remain the most popular gaming options.

The legal aspect regarding online casino gaming in the US changed a lot over the past decade. 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 could legalize and regulate different forms of gaming over the internet.

Players can now access multiple slots sites in New Jersey, Pennsylvania, Michigan, West Virginia, Connecticut, and Delaware. More states are looking into passing their own regulations that would allow them to license operators for real money online slots within their borders.

Top 10 Online Slots

Some casinos can offer more than 1,000 games, so finding the best online 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 slots 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 Slots

The American hard rock band is now available on the spinning reels. The Guns N’ Roses online slots 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 Slots

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 Slots

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 Slots

9 Masks of Fire is an online slots 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 Slots

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. Tome of Madness is available on leading new online slots sites, like BetMGM and Borgata.

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 Slots

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 Slots

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 Slots

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 Slots

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 slots online, you simply have to sign up and make a deposit. We will go through the steps required to start spinning the reels right away.

  1. Go to the site of any of the recommended casinos. We will use BetMGM.
  2. Once on the homepage, look for the “Register” button and click it once.

BetMGM Register Button

  1. You will need to enter some personal details in the registration form in order to create your own secure casino account.

BetMGM Register Form

  1. Some verifications are needed in order to comply with online gambling regulations in the US. Verify your phone number and upload a photo ID to secure the account.

BetMGM Verify Phone Number

  1. Make a deposit on the site by clicking on the “Deposit” tab at the top, selecting a payment method, and entering the details. You will also benefit from a 100% welcome bonus on the first deposit.

BetMGM Online Gambling Deposit

  1. Open the casino section, select the slots category and browse the many options available. To start a game, simply click it once.

BetMGM Casino Play Now

  1. 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.
  2. Spin the reels by pressing the large spin button. You will automatically receive a payout if you land a winning combination of matching symbols.

88 Fortune Slot Bets and Spin

How do Online Slots Work?

Slots are casino games that can come in many styles and cover a wide range of themes. At the core however, most slots follow similar mechanics. The standard game 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 online 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 at Online Slots?

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 games can have just one line, while most slots 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.

Understanding Online Slots RTP and Volatility

The return to player rate (RTP) 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, such as Bet365, 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 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 slots. We recommend checking out DraftKings 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.

Best Payment Methods for Real Money Slots

To play slots for real money, you first need to add funds to your account. You can do this through various banking methods, but the available options can depend on the site and on the state from where you are playing. In general, you can find these payment methods at online slots sites:

  • Credit and Debit Cards: These remain popular options for online gaming and are available at all of the featured sites. Visa and Mastercard are two main operators in this segment, while some casinos also accept Discover and American Express.
  • E-Wallets: PayPal, Skrill, and Apple Pay are now the most frequently used electronic wallets for casinos in the US. They require customers to create accounts and fund them through other methods, but transactions afterwards are secure and fast, with low fees. They also make for quick withdrawals online.
  • Online Banking: Online banking is a secure way to add funds to an online gaming account directly from your bank account. It is preferred for larger amounts given the reduced fees and the high transaction limits. For withdrawals via online banking, players may have to wait 3-5 days for processing.
  • Prepaid Cards: Most casino brands now have their own Play+ prepaid cards. Customers can sign up and request a card that they can then fund through other methods. The Play+ card is great for managing the bankroll since it allows users to set clear limits and make fast transactions to and from the casino.
  • Cash: Paying in cash is an option that is available at many top online slots sites in regulated states. Players can simply go to the local partner of the online casino and make a deposit in cash that will instantly be available in the account balance. Withdrawing is also supported via cash.

Types of 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, as is the case with BetMGM and Borgata. While the amount is only worth around $20, this allows players to try out a few slots for free.
  • Bonus Spins: 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

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

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 Online Casino for Slots

BetMGM is our top recommendation for playing slots online in the US. It is available in multiple states with an impressive library of games. You can claim a no deposit bonus when registering, browse more than 2,800 slots, and double your bankroll with a 100% bonus on the first deposit, up to $1,000. Moreover, BetMGM Casino runs frequent promotions and players benefit from the exclusive MGM Rewards program.

The online gaming platform is secure and supports popular banking methods that cover cards, e-Wallets, prepaid vouchers, online banking, bank transfers and even cash. Easily deposit funds and then withdraw the winnings from your favorite online casino slots.

FAQs

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US Online Slots Casinos Resources

To learn more about the laws and regulations in different states with legal online slots, you can check out the regulatory bodies here:

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 Casino.org and Covers. Vlad has a Master’s Degree in Economics and enjoys the occasional esports game.

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