Best Online Slot Casinos
The best online slots sites offer more than 1,000 slot titles from reputable providers such as IGT, NetEnt and Light & Wonder. These can range from classic three-reel slots with basic gameplay to the latest releases, which often have 3D graphics, thousands of paylines and progressive jackpots.
This guide highlights the top five online casinos in the United States for slot players. We will discuss the games they offer, the bonuses they provide and their other features, helping you find the best option for your personal preferences. We’ll also go over slots with high return-to-player rates and additional info about the bonuses that online casinos offer.
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Best online slot sites
Our team has reviewed the best online slot casinos in the country. We focused on the quality and variety of each collection, along with the bonuses, the user interface, the payout speeds, and the customer support. These are the best online casinos for slots:
1. DraftKings Casino slots
DraftKings is the best online slots casino in our ratings right now. In some states, it offers more than 1,000 slots, including exclusives such as 2 Tribes, American Treasures, DraftKings Balloon, Just Kitten Around and Loki’s Luck. It hosts leading games from major suppliers like NetEnt, High 5 and IGT, along with titles from smaller studios.
This online casino runs its own progressive jackpot network. It covers most of the exclusive slots as well as various third-party slots, including Cash Eruption, Cash Machine, Cleopatra, Da Vinci Diamonds, Fortune Coin, Gonzo’s Quest, Jumanji and Starburst Xxxtreme. Some slots have a single progressive jackpot, which may reach seven figures. In some cases, you’ll only need to bet $0.10 per spin to be in with a chance of winning it. Others have four jackpots (mega, major, minor and mini) and a minimum bet of $0.25.
The DraftKings Casino lobby does not have as many shortcuts, categories or filter options as rivals like BetMGM. It does, however, offer a powerful search option, and pages load quickly, so it is not too difficult to find a specific game. Another potential drawback is the lack of customer support options. Caesars Palace, BetMGM and FanDuel offer stronger customer support.
2. FanDuel Casino slots
The FanDuel slots category offers the most user-friendly interface on the market. Navigation is simple, pages load quickly, and many useful sections and shortcuts exist. The homepage is quite busy, with vibrant animations that showcase specific slots.
You will find sections for featured games, new releases, daily jackpots, progressive jackpot slots, bonus buy slots, streaming slots, Megaways slots, casino floor favorites and so on. There is also a section for the top 10 games in each state. FanDuel offers a more sophisticated platform than DraftKings, and it is optimized for mobile play, too. As such, FanDuel Casino has a higher average user rating than any of its key rivals on both Google Play and the App Store.
However, it also carries a significantly smaller range of slots than many competitors. There are around 600 slots in some states, although the library is smaller in states like West Virginia, where there are fewer licensed suppliers. It does not have many exclusives, either. While FanDuel cannot compete with BetMGM and DraftKings in terms of variety, it nevertheless built a diverse library, featuring some of the best games from a broad spectrum of providers, including Red Tiger, NetEnt, High 5, IGT, Lightning Box and Light & Wonder.
3. BetMGM Casino slots
BetMGM is the No. 1 online slots casino in the country by market share. It offers a largely unrivaled breadth of games, which it displays on a sophisticated platform. There are more than 3,200 BetMGM slots available in New Jersey, which is substantially larger than the libraries at most rival sites. It has a smaller selection in other states, which do not have as many regulated suppliers, but BetMGM always excels in terms of variety.
BetMGM Casino is a product of MGM Resorts International and a European company called Entain. The latter is one of the world’s leading online casino operators, with brands that include PartyCasino. It has developed a strong platform, replete with an array of exclusive slots.
BetMGM also has an internal progressive jackpot network that includes games like MGM Grand Millions and Bison Fury. It shares this with sister sites such as the Borgata online casino in some states. These progressive jackpot games have delivered record payouts in states such as New Jersey and Michigan. This has helped set BetMGM apart from the competition, although DraftKings is now fighting back with a similar system.
You can browse new slots, featured slots, exclusives, jackpot slots and so on, or you can filter by provider. Game suppliers include DGC, Light & Wonder, IGT, NetEnt, Inspired, Everi, Anaxi, AGS, High 5, Play’n Go, Novomatic, Ainsworth, DWG and Konami. Pages do not load quite as quickly as those at DraftKings and FanDuel, perhaps due to the size of the game library, but it is still a pretty accessible online casino.
4. Bally Casino slots
The slots at Bally Casino are beginner-friendly and available only in New Jersey and Pennsylvania. It offers a smaller selection of slots than BetMGM, DraftKings and FanDuel, but the interface is clean, accessible and simple to navigate. Sections for trending slots, new slots, jackpots, exclusives and themes such as Western slots help organize the available games.
Bally Casino offers more than 400 slots in New Jersey and 223 in Pennsylvania. Parent company Bally’s Corp., which is based in Rhode Island, purchased a major UK online casino software provider named Gamesys a couple of years ago. It now has in-house development capabilities, so Bally Casino now features exclusive, original slots such as Winfall Wishes, Tiki Island, Sapphire Sorceress and various others.
This online casino also offers the most appealing welcome bonus in the business right now. New customers who sign up using the Bally Casino promo code ROCK50 will receive a $50 no deposit bonus. Then, if they deposit $10 or more, they’ll also qualify for a refund in cash, not casino credit, of up to $100 to cover any net losses in their first week of play. The online casino also offers extra bonuses for all slot players, along with the Bally Rewards program.
5. Caesars Palace Casino slots
Caesars Palace Online Casino offers slot players a large welcome bonus, a strong rewards program and a reasonably broad variety of games. There are more than 550 slots at Caesars Palace Casino New Jersey, from studios that include Big Time Gaming, IGT, Lightning Box, NetEnt, ReelPlay, SG Digital, Wild Streak Gaming and WMS. The casino’s game library is smaller elsewhere, as is generally the case at legal online casinos. There are a couple of exclusives in the mix, including Caesars Fortune.
The lobby is bright, vibrant and full of colorful animations. One useful section highlights the top progressive jackpot slots, appearing in descending order of the top prize available at any given time. It hosts mega jackpot slots from IUFT, such as Wolf Run, Siberian Storm and Elephant King. There are also links to new releases, Megaways, Palace Picks, Diamond Selection and Sizzling Games, which aid the navigation process.
While Caesars Palace lacks the sort of variety BetMGM offers, it does have several key features that could appeal to slot players. For example, it offers 24/7 customer service via phone, live chat and email. The betting limits are broad, ranging from $0.01 per spin to $2,000.
Online slot bonuses and promos
Most online casinos offer a welcome bonus to attract new customers. They may also provide regular bonuses to encourage slot play and to deter you from switching to a rival online casino. These are the main types of bonuses you may come across:
- Deposit match or loss refund bonus: The casino will match a percentage of your initial deposit with bonus credits. For example, DraftKings Casino offers a 100% first deposit match up to $250 to new customers. Some casinos, meanwhile, instead offer a refund to cover any of your net losses during a set period after you sign up. Most pay the refund in bonus credits that will have a playthrough requirement, but some will pay it in cash.
- No deposit bonus: This type of sign-up bonus provides you with casino credits immediately after you create an account. There is no need to deposit or risk your own money to qualify. If you complete the wagering requirements, you can cash out what remains. Bally Casino offers the best no deposit bonus right now, as new players receive $50 in bonus credits straight off the bat.
- Refer-a-friend bonus: DraftKings, for example, offers up to $100 in casino credits via its referral bonus. The person you refer needs to follow your link, create an account and make a deposit. The bonus you receive will depend on the size of that first deposit. The person you refer will receive an identical bonus.
- Bonuses for existing players: Many online slot casinos provide existing customers with ongoing bonuses. These can include bet-and-get promos. For example, bet $30 on a specific slot at BetMGM and get $10 in bonus credits. You may also find leaderboard contests, loyalty rewards and other promos.
- Reload bonus: This is similar to a first deposit bonus, but for existing customers. For example, a casino may offer a 20% reload bonus up to $100 if you deposit money into your account on a particular day.
Online slot bonus advice
It is important to read the fine print before claiming a bonus at a casino for playing online slots or other games.
Check the playthrough requirement of each casino bonus before you make any decisions. This will tell you what multiple of the bonus credits you will need to wager to convert them into withdrawable cash. For example, a $100 bonus with a 10x wagering requirement means you would need to place $1,000 worth of bets.
Most slots count 100% toward completing the requirements, whereas table games may only count 10% or 20%. However, some slots such as high-RTP slots or progressive jackpots may not count at all, so check the terms and conditions carefully.
How to play online slots in 7 steps
The best online casinos make it simple for you to create an account and start playing slots. Just follow these steps:
- Choose one of the online slots sites we have recommended above. Follow the “play now” link or click the promo code to visit the site and claim the sign-up bonus.
- Fire up the slots site’s registration form and fill in your full name, date of birth, phone number, email address, home address and final four digits of your Social Security number. Choose a password. Make sure the promo code appears in the appropriate field.
- Accept the terms and submit the form. The casino will try to verify you. If it is unable to do so, or if it does not offer automatic verification, upload any additional documents that it requests to confirm your identity.
- Visit the online cashier and deposit money into your account. The site will then release the bonus credits if you have redeemed a deposit bonus.
- Select the “Slots” option on the homepage to browse the full library. Alternatively, head to a sub-category, such as Megaways or jackpot slots, or search for a specific game.
- Click on a game. You will see a paytable, which explains the payout rates for the various symbols, along with a description of the game.
- If you are happy, enter the game. Choose your bet amount and click to spin the reels. If certain matching symbols line up on one or more paylines, you will win, and your winnings will appear in your balance. Repeat as many times as you like, but remember to gamble responsibly.
How to choose the best casino for real money slots
There are lots of rival online slots casinos to consider in states such as Michigan, New Jersey and Pennsylvania. These are some of the key traits to look at when choosing an online casino:
- Game variety: Browse the slot library and make sure it includes the games you want to play. For example, if you like playing Megaways slots, high volatility slots or progressive jackpots, you can consider the breadth of options available. It is also helpful to look out for specific games if you have particular favorites.
- Exclusive slots: Most online casinos feature the same games from large providers like NetEnt and High 5, but the best casinos can also stand out by offering exclusive slots.
- High RTP slots: Slots with high theoretical payout rates can boost your chances of enjoying a successful session. We provide a list of some high RTP slots below.
- Bonuses: Promotions and loyalty rewards can also improve long-term chances of success when playing online slots. Consider the size of the welcome bonus, any available recurring promotions and the wagering requirements that you’ll need to meet.
- Payment methods: If an online casino does not offer your preferred payment method, it can be a deal-breaker. Visit the payments page at any casino site to scan the list of deposit and withdrawal options. You might also like to consider the payment limits, as some online casinos are more suited to casual players and others appeal more to high rollers.
Free vs. real money slots
Some online casinos will let you play slots for free in demo mode with virtual credits. You can then play them for real money at any time. These are some of the key pros and cons of each mode:
|Real money slots||Free slot games|
|Offers the chance to win real-money playing online slots.||Playing in demo mode allows you to test the slots to determine which ones you might want to play for real money.|
|You often have a broader range of options at your disposal, as some slots are unavailable in demo mode.||You can extend your gameplay, as your own funds are never at risk.|
|Players can earn bonuses and rewards points while playing slots online for real money.||Some players feel that playing in demo mode lacks the same excitement when compared with real money play.|
|Success is never guaranteed, and you can lose money when playing online slots, so please gamble responsibly.||It can be frustrating to secure a win when playing in demo mode, as you will not earn a profit.|
Legal online slot casinos
Legal online slot casinos are available in six states. Such casinos need a license from the gambling regulator in that state, such as the New Jersey Division of Gaming Enforcement or the Michigan Gaming Control Board.
Software providers must also obtain licenses in each state to supply online casinos with slots. The list of licensed providers varies on a state-by-state basis, which means that the same online casino may offer different slots in each state.
Pennsylvania is the largest state with legal online casino gaming. However, it imposes a 54% revenue tax on online slots, compared to just 15% in New Jersey and 20% to 28% in Michigan. That has dissuaded some providers from launching in the state, so online casinos in Pennsylvania tend to have smaller slot libraries than those in neighboring New Jersey. At the moment, Pennsylvania is home to 19 online casinos.
Online slots have been legal in West Virginia since 2019. BetMGM launched the first licensed online casino in the state the following year. It now has eight rivals in West Virginia, including FanDuel, DraftKings and Caesars Palace. Online casinos in West Virginia have far smaller game libraries than those in states like New Jersey and Michigan. However, one quirk is that casinos tend to offer larger bonuses in the Mountain State.
Delaware first allowed legal online slots gambling more than a decade ago. However, players in the state lack the sort of choice available in neighboring New Jersey and Pennsylvania. There are three online casinos (one from each of the state’s land-based racinos) and they all host the same games, provided by 888 Holdings on behalf of the Delaware Lottery. There are fewer than 100 slots available. The Delaware Lottery recently announced that BetRivers owner Rush Street Interactive would replace 888 as its partner, which could increase the number of online slots available in the state.
You can choose from 28 online casinos in New Jersey. Legal online casino gambling launched in the state in November 2013, and it has grown from there. Online casinos in New Jersey can feature games from a broad pool of suppliers, so they tend to have larger slot libraries than their counterparts in other states. For example, there are 3,217 slots at BetMGM New Jersey and 2,725 at BetMGM Michigan.
There are two places to play online slots for real money in Connecticut: DraftKings Casino and Mohegan Sun Casino. No other online casinos can launch in the state, so they will continue to hold a duopoly unless the state amends its online gambling law. The Mohegan Sun online casino is powered by FanDuel. It is a reskinned version of FanDuel’s online casino, and it is different from the Mohegan Sun online casino in New Jersey.
Types of online slot games
There are thousands of online slots at some casinos. They may be grouped into a variety of sub-categories, which can aid navigation. These are some of the key types of online slots:
- Classic slots: Basic online slots that mimic the gameplay of the old-school mechanical slot machines in Las Vegas or Atlantic City. They often have just one payline, either three or five reels and very few additional features. Some players enjoy the simplicity and speed that these games offer.
- Video slots: These slots offer additional multimedia layers to create a more immersive experience. They also generally have multiple paylines. Video slots dominate at legal online casinos. They tend to offer lots of different themes, volatility levels, features and RTP rates.
- Megaways slots: Big Time Gaming, an Australian studio that Evolution Gaming purchased in 2021, created the Megaways feature in 2015. It revolutionized online slot play, as it allows for more than 100,000 paylines on a single slot. Many other studios now use the Megaways feature, and you will find dozens of these games at top online casinos.
- Progressive jackpot slots: A percentage of your wager amount goes into a communal pool each time you spin the reels on a progressive jackpot slot. One player will eventually land the top prize by matching the correct symbols, often within a bonus round, and the jackpot pool then begins from a small base once again. Some jackpot slots offer seven-figure payouts.
- Bonus buy slots: You can buy automatic access to the top bonus features on these slots. Doing so can increase the RTP rate of the game.
- 3D slots: Many video slots now boast 3D graphics. This does not alter the gameplay, but it can create a more visually arresting and immersive experience.
High RTP and online slot payouts
Every online slot has a return-to-player rate. This tells you the theoretical return that an average player would receive. For example, if the RTP is 95.8%, the average player would get back $95.80 out of wagers totaling $100. All results are random, meaning certain players win and others lose, but selecting games with high RTP rates will theoretically improve your chances of success.
The random number generators that provide the results at each online slot adhere to the stated RTP rates. They receive independent testing for accuracy and fairness, ensuring that they uphold the RTP.
The chart below highlights the games with the highest RTP rates at legal online casinos in the United States. Some of them, such as Blood Suckers, offer a high RTP percentage to all players. Others, including Medusa Megaways, require you to activate the bonus buy feature to benefit from the top RTP rate.
|Blood Suckers||98%||DraftKings, FanDuel|
|White Rabbit Megaways||97.7%||BetMGM, Golden Nugget|
|Medusa Megaways||97.63%||DraftKings, Caesars Palace|
|Secrets of Atlantis||97.07%||DraftKings, FanDuel|
|Halloween Fortune||97.06%||BetMGM, BetRivers|
|Steam Tower||97.04%||BetMGM, BetRivers|
|Gorilla Go Wilder||96.94%||DraftKings, BetRivers|
|Guns N’ Roses||96.98%||FanDuel, Caesars Palace|
|Blood Suckers 2||96.94%||DraftKings, FanDuel|
Online slots FAQs
You can play slots online for real money at legal casino sites and apps in New Jersey, Pennsylvania, Michigan, West Virginia, Connecticut, and Delaware. No other states permit legal online casinos right now, but we will provide updates if that changes.
DraftKings is the best online casino for slot players according to our rankingss. It offers more than 1,000 slots in some states, including dozens of progressive jackpot games. New customers can also claim a large sign-up bonus and earn regular rewards, so it is a popular choice.
Start out by identifying a range of high-quality slots from reputable providers such as NetEnt, IGT, SG Digital and Lightning Box at a licensed online casino. You can then focus on factors such as the RTP rate, theme, volatility level and features when selecting an ideal online slot for your personal preferences.
The most popular online slots include Starburst, Gonzo’s Quest, Cleopatra, Wheel of Fortune and Book of Dead. They all came out years ago, but their popularity has endured, and they feature prominently at the top legal online casinos in the United States.
Blood Suckers, Starmania, Secrets of Atlantis and White Rabbit Megaways are among the online slots with the highest RTP rates. There are some slots with even higher payout rates, such as Book of 99 and Ugga Bugga, but they have not yet found their way onto licensed online casino sites anywhere in the US.
The RTP rate highlights the theoretical return that an average player would receive. For example, if a slot has an RTP of 96.2%, the average player would get back $96.20 from $100 worth of bets. However, the results are random, meaning that some players win and others lose.
The most volatile online slots include Big Bass Bonanza, Dead or Alive II, Extra Chilli Megaways and White Rabbit Megaways. Some players enjoy these slots, as they offer a greater potential for large payouts. However, the wins tend to be infrequent, so others prefer the regular, smaller wins at low volatility slots.
BetMGM typically has the largest jackpots among its slots. It hosts an in-house network of progressive jackpot slots, which it shares with sister sites PartyCasino and Borgata in some states. However, DraftKings regularly offers large jackpots, as well, so you may find higher prizes there at certain times.