We’ve rounded up the best online slots that are legal to play in the US for real money online. In this article, we’ll be running through each site to help you choose which ones to sign up to, and we’ll be explaining why we chose each site and who they’re ideal for.
We’ve based our criteria off the reputation of each casino, as well as slots variety and RTP (return to player). We’ll also be answering your most popular questions related to slots for real money at the end of the article.
Which Online Slots Payout the Most?
- 5 Wishes – 97.58% (available at Red Dog Casino)
- Sugar Pop – 97.6% RTP (available at SuperSlots)
- Totem Tumble – 97% RTP (available at Wild Casino)
- Asgard Deluxe – 96.48% RTP (available at Slots Empire)
Best Online Slots Sites
1. Red Dog Casino – Best Online Slots Site Overall
- High RTPs
- 200+ slots
- Brand new look
Red Dog Casino might still be a fairly new online casino in the US, but it scoops our award for best overall online slots site for a few reasons. For one thing, its overall slot RTP is very high. Indeed, the game 777 which has a fair RTP of 96.62%, which is one of the highest we’ve ever seen.
Other things that stand out about this casino site include a choice of over 1,000 slots, an excellent mobile experience, and the fact that the games are provided by RealTime Gaming, which is one of the biggest names in online gambling.
Some players will be disappointed by the lack of live dealer games, but if you’re mainly here for the slots, there’s not too much to argue with.
Moreover, at Red Dog Casino you’ll also find the popular slot game 5 Wishes. This quick-fire game is based on the adventures of Aladdin, and you can win as many as 100 free spins if you’re lucky.
2. Cafe Casino – Best Slots Site for Bonuses
- Generous welcome bonus
- Amazing layout
- Great selection of 300+ real money slot games
Cafe Casino’s aesthetics is based on a US coffeeshop, with the idea that you can waltz into a virtual coffee shop – and start playing online slots.
We think it’s a cool concept that’s great for US players, and the site looks fantastic on the eyes. It’s also an industry leader in bonuses and promotions and offers a very generous welcome bonus and an extremely attractive loyalty program.
Its slot games include brand new games alongside classic titles, and they’re provided by multiple software providers, including RealTime Gaming and Rival.
It’s slightly disappointing that deposit and withdrawal options are limited, but payout times are fast and Bitcoin is accepted.
A Night With Cleo, meanwhile, is one of the standout slot games. This is a progressive jackpot slot game developed by the Bodog Group. It comes with 20 fixed pay lines and you’ve got the chance of winning 180 free spins.
3. InterTops – Most Established Slots Casino
- 100+ real money slots
- Two casinos in one
- Established since 1996
InterTops Casino has been around since 1996, which helps to make it the most established and trustworthy real money online slots site in our review guide. And while it hasn’t really changed that much over the years in terms of its design and aesthetics, it continues to offer a classy online casino experience that will especially appeal to old-school players.
In fact, it’s essentially two casinos in one. As such, it boasts a solid selection of games, including lots of high quality slots. There are also blackjack variants, video poker, roulette, and baccarat games.
The lack of live dealer games might disappoint some US players, but there’s a wide variety of slot games to play here. These include progressive slots and 3-reel slots..
Our pick of its online slots games is WildFire 7s, a classic 4-reel slot game available on mobile that has 5 paylines and bumper rewards.
4. Super Slots – Best For Live Casino
- Two live casinos
- Blackjack tournaments
- 2000+ slot games
As its name suggests, Super Slots is an online casino dedicated to slot games. It’s legal to play in the US, there are over slot games to choose from, as well as a good selection of table games.
Super Slots actually offers two live casinos where you’ll find live dealer progressive jackpots and live dealer blackjack.
Wagering requirements are a tad on the steep side compared to most other sites in our list, but this casino site still has a lot going for it. It might be new (it was launched in 2020), but its playability is excellent and its graphics are top-notch.
It’s also home to Sugar Pop, an action-packed online slot game developed by BetSoft that has a 97.6% RTP.
5. Las Atlantis – Best Themed Online Slots Casino
- Live casino
- 240+ casino games
- Excellent site design
Las Atlantis looks the real deal with its underwater city theme. If you enjoy playing at casino sites that look spectacular, this might be the one for you.
It’s a safe-to-use, new 2021 slot site for US players that offers a sizable welcome bonus, a variety of payment options, and it’s backed by Visionary Gaming and RealTime Gaming. Reputability and excellent gameplay are therefore ensured.
The rollover requirements are a bit high but it’s hard to argue with the game selection. Alongside hundreds of casino games is a live casino, as well as a great selection of slot games. These include the popular Ancient Gods, a RealTime slot with 25 paylines and a 96% RTP.
There are also lots of slot bonuses, including a 280% slot match bonus when you make your first deposit.
6. Ignition – Best Real Money Online Poker Site
- Frequent poker tournaments
- Bitcoin accepted
- 90+ real money slots
If you want to find a casino site that fares well on both the online slots front and the online poker front, Ignition might be worth a closer look.
With its high volume of traffic (there are always at least 2,000 players online), regular tournaments and variety of players with different skill levels, Ignition has sealed its place as the U.S.’s premier casino site for poker.
The site is reputable, easy to use and there are over 90 slots at the time of writing. These include 21 Wilds, which is currently Ignition’s most popular slot game. You can play it for free or for real money, and it has a 96.7% RTP.
Overall, we’d say that Ignition probably has fewer classic casino games than other sites. But the graphics are smooth and the gameplay is unbeatable.
7. Bovada – Best Real Money Slot Site for Sports Betting
- Huge sports variety
- Reduced juice
- Prompt customer service
It’s not always easy to find a US casino site that’s great for both online slots and sports betting, but we think Bovada is a solid option. It might not be perfect (no online casino is), but the way it lets you seamlessly flip flop between the casino section and the sportsbook, and the way it easily links your accounts, gets our thumbs up.
Sports variety is great, and along with all the major sports, many minor sports are covered, too. The odds are competitive, live betting is available, and Bovada is available in most US states.
We’d probably argue that its sportsbook is better than its casino, but that’s simply because Bovada is more aimed at sports bettors. Bovada is still able to offer a huge choice of slot games, including Temple of Luxor. This slot game has 100 paylines and 11 wheels, as well as a 97.1% RTP.
8. Slots.lv – Best Real Money Slots Site for Recreational Players
- 400+ games
- 100+ online slot games
- Video poker available
While most of the online slots sites in our list can be used by recreational players, Slots.lv is aimed purely at those who just want a bit of casual fun. The games are provided by the likes of BetSoft and Rival, which, while it doesn’t guarantee outstanding quality and jackpots, does at least ensure action-packed, non-stop entertainment.
There are over 400 games to choose from, including many that are popular with US players, such as roulette and blackjack variants.
Slots-wise, it’s no surprise that Slots. lv offers a strong selection. Choices include our personal top pick, Goblin’s Gold, a classic instant play 5-reel game which has a 96.5%. You’ll also find almost 50 jackpot slots at this site, too.
9. Wild Casino – Best Online Slot Machines for High RTPs
- 24/7 customer service
- High RTP slot games
- 300+ slot games
- Established online slot site
Wild Casino is one of the oldest US online casinos still in existence. It was founded in 1991 and continues to offer an excellent user experience that will please both seasoned players and newbies alike.
As one of the oldest casinos around today, Wild Casino has had enough years to get things right. Customer service is prompt, there are bonuses galore and most payment methods are covered.
The site has also moved with the times and is able to offer mobile games and a clean and classy user interface.
In terms of its slot games, Wild Casino actually offers a smaller selection than most other sites in our list. However, it also offers some of the highest RTPs in our list. For example, its popular slot game Totem Tumble – a slot machine provided by Nucleus Gaming – has a 97% RTP.
10. Slots Empire – Best for Free Games
- Quality live dealer games
- Early payouts available
- Great range of video slots
- Play online slots for free
Slots Empire is another highly rated slots and casino site aimed at US players who just want to have some fun. There’s nothing especially fancy about it, but with the games provided by the likes of Visionary iGaming, you’re at least guaranteed great graphics and big jackpots.
We feel it excels when it comes to live dealer games. The look of the games gives them a real authentic feel, and you can enjoy blackjack, baccarat and roulette here.
There are some great promotions on offer, too.
When it comes to slots, there are lots of video slots available to play, and you can play demo games to help you get some practice in.
Meanwhile, our pick of the slot games is Asgard Deluxe, an entertaining if challenging video slot game that has a 96.48% RTP.
11. El Royale
- 24/7 customer service
- 200+ slot games
- Excellent selection of table games
12. Big Spin Casino
- Superbly designed website
- 3D slot games
- Video poker available
- Sportsbook included
- Cryptocurrencies accepted
- 3D slot games
- Fast payouts
- Early odds
- 200+ slot machines
How Do Online Slots Work?
Online slots rely on a random number generator to determine the outcome of each sequence. This also ensures that every single spin is completely random. Your chances of winning depend on the RTP, as well as the probability of the symbols lining up on the pay line you’re betting on.
Are Online Slots Rigged?
Online slots that are provided by fully licensed online slot casinos aren’t rigged – and it’s impossible for them to ever be rigged. This is because they use a random number generator to determine the outcome of each sequence.
Ranking Methodology – How We Chose Our Sites
Reputation – To help verify the reputability of each casino site, we checked their licenses, user reviews as well as their overall professionalism. As such, every casino in our list is fully licensed and trustworthy.
Variety of Slots – We wanted to find casinos that offered a variety of slots for real money in terms of types of slots, such as multi-reels and video slots, as well as their overall choice of slots.
Payout Percentage – We looked for online casinos with high return to player RTP slots to ensure your chances of winning (and winning big) are strong.
Slot Bonuses and Promotions – The casinos on our list were chosen according to the size, frequency and types of bonuses and promotions on offer. We also made sure to round up online casinos whose bonuses came with low wagering requirements.
User-friendliness for USA Players – Lastly, we factored in things that matter to the US player, including payment methods accepted, currencies, other popular casino games, and the overall look and theme of the online casinos.
Which Bonuses and Promotions Can I Get When Playing Slots?
Free spins – This is the most popular bonus you can get when playing slots. Free spin rounds are available on most slot machines, but the exact amount – which can often range from 10 to 100 – depends on the game
Wheel-based bonuses – Sometimes, a bonus game comes with a wheel which you need to spin in order to win more credits and, sometimes, cash prizes.
Click Me bonus – Some slot games take you to another screen during the bonus round where you need to click on random items to unlock prizes. Each prize hidden behind each item has a different value to all the others, so it’s really just a matter of luck whether you win big or small
What Are Free Slots?
Free slots – otherwise known as “demo slots” – give you the chance to play slot machines without wagering any of your own cash. The catch is that you can’t win any money. Instead, you can play for free, either for a bit of fun to pass the time, or to see if you can come up with a strategy which you can then implement on real money slots.
You can play slots for free at some casino sites, such as Slots Empire, but not all.
What Are Real Money Slots?
Real money slots, which you can find at nearly every single online casino, are slot games that require you to wager real money to see if you can win real money.
How to Choose the Best Slots Casinos?
While you should definitely choose slots casinos based on whether or not they have your favorite slot games, the number one thing to check first is a casino’s licensing. This tells you how trustworthy and safe-to-use the site is.
Other things to then look at include user interface (is the casino easy to navigate?), mobile experience, customer support (what customer support channels are available?), payment methods (is your preferred banking option supported?), and types of casino games (alongside slot games, what other games are available?).
Best Online Casinos for Slots: Final Thoughts
Playing slots online is always better when we’re playing at the best online casinos for slots! These are legal to play in the US and have the best variety of games, the biggest bonuses and the best UX for American players.
All the casino sites in our list are great for slot games, but it’s also important that you do your own research before creating an account. Whatever you decide to do, make sure to gamble responsibly and we wish you the best of luck!
If you suffer from a gambling problem or suspect somebody you know does, then we strongly suggest that you call Gambler’s Anonymous at 1-626-960-3500 to talk with an advisor for help and to make gambling safer for you or your loved ones.
Underage gambling is an offense, all sites are 18+ ONLY. Gambling can be addictive, please play responsibly and only bet what you can afford. Casinos listed on our site may not be available in your region. Check your local laws to ensure online gambling is available and legal where you live.
Visit these organizations for free gambling addiction resources:
The news and editorial staffs of The Denver Post had no role in this post’s preparation.