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AUTHOR: mihaela · Updated: 29th Nov 2021

Best Slot Sites

Looking for the top online slots in the US right now? You’re not alone, because slots are among the most popular games played at online casinos across the nation. Whether you like simple, retro-style slots, or prefer the newer games with immersive storylines and big bonus rounds, they’re all ready to be taken for a spin. Find out more with our handy guide to online slots, and check out our handpicked list of the best slot sites right now.

How We Choose the Best Slot Sites

There’s a heck of a lot of US casino sites out there, but we use a strict set of criteria to separate the best slot sites from the rest. Here are the factors we look at.


It’s crucial that any slot site you join is licensed by your state’s gaming authority. To get a license, an online casino has to meet stringent conditions to ensure its games are fair, customer data is secure, and much more. We only recommend licensed sites, but please note that you must ensure the site you’re playing at is licensed to operate in the state you’re playing from.

Games Selection

Slots come in countless flavors. There are Egyptian-themed slots, space-themed slots, Irish-themed slots, slots which plunge you into the worlds of blockbuster movies and TV shows, and slots which mix up their reels with the Megaways mechanic. The top online slots sites cater for all tastes by presenting sprawling games libraries for you to browse. We take a close look at the slots selection available at a site while we weigh up its overall quality.


From welcome bonuses to reload bonuses, our experts keep a close eye on what kinds of promos are out there. Free spins packages will be of particular interest to fans of online slots, though matched deposit deals can also come in handy. As well as considering the size of the bonuses, we also pay attention to the T&Cs, and award brownie points for low, player-friendly wagering requirements.

Customer Support

It’s always good to know that if you ever have issues or questions regarding your casino account, the staff will be on-hand to help. That’s why we look for slot sites that offer excellent customer service, ideally with 24/7 support, a variety of ways to contact the team, plus quick response times.

Payment Methods

Having a variety of payment methods is always a perk, as that makes it more likely you can make transactions in a way that suits you. We look for slot sites that offer plenty of options for making deposits and withdrawals, including credit and debit cards, e-wallets, bank transfers, pay by phone, and more.

5 Tips to Help You Choose the Best Slot Site

Can’t decide where to play? Here are some tips for zeroing-in on the best US sites for online slots.

Choose a Slot Game from Your Favorite Studio

There are dozens of software studios that create online casino games, and many of them have their own trademark style and approach, whether in terms of the graphics style or gameplay. If you try a game from a particular studio and like it, you may want to check out slot sites which carry a lot of that studio’s titles.

Make Sure the Slot Game is Mobile Friendly

The best slots come in both desktop and mobile-optimized versions. This means you can hit the reels wherever you happen to be, as long as you have a good internet connection. The relatively simple gameplay of slots makes them particularly well-suited to enjoying on the move, so it would be a shame if your chosen game hasn’t been optimized for phone and tablet use.

Select the Right Signup Offer

It’s best to choose a sign-up offer that reflects how you like to play. Free spins are a natural draw for slot fans, but they’re often limited for use on a small selection of games – often just one. That’s great if you want to play those titles, but if you want to try out other slots, you might want to choose a matched deposit offer which hands you a bunch of bonus credits to use across the site. Look out for offers that come with low wagering requirements so you don’t have to play through your bonus many dozens of times before you’re able to withdraw any associated winnings.

Read the Terms and Conditions

The T&Cs aren’t exactly the most exciting part of an online slots site, but it’s very important to read the fine print when it comes to things like minimum and maximum deposits, withdrawal processing times, and bonus terms.

Make Sure the Casino Accepts Your Favorite Payment Methods

Everyone will have their own preferred way to make payments and withdrawals, and the top online slots sites should have you covered. But it’s always wise to double-check which methods are supported, especially if you’re using a particular e-wallet or prepaid method.

Top 10 Online Slots

We’ve taken lots of factors into account when choosing the top online slots at US online casinos. These include fun themes, engaging gameplay and player-friendly RTP percentages. Here are some of the best slots you’ll find at many licensed US casinos.

Gonzo’s Quest

Released by NetEnt back in 2011, Gonzo’s Quest is inspired by the story of real-life explorer Gonzalo Pizarro, who sought out El Dorado, the fabled lost city of gold. This five-reeler takes you on your own gold-seeking adventure, with stone mask symbols cascading down the screen against a lush Incan backdrop. The game has an overall RTP of 96%, and you’ll find it on sites including 888 Casino and DraftKings.


Dating back to 2012, the space-themed Starburst is perhaps the most iconic slot game from NetEnt, and its fuss-free gameplay makes it ideal for newbies. The five reels are adorned with sparkling gems, and the vibrant colors make it a pleasure to play. With Starburst, you can ‘win both ways’, meaning symbols can be matched from left to right and right to left, boosting your chances of a winning payline. Add to that the 96% RTP, and it’s no wonder so many players seek it out at sites like BetMGM Casino and Bet365.

Book of Dead

Another stone-cold classic, Book of Dead lets you follow intrepid explorer Rich Wilde into the Tomb of the Pharaohs to find the treasures buried deep inside. Book of Dead was first released by Play’n GO in 2014, and its Indiana Jones-like vibe has helped make it a hugely popular game at countless casino sites across the world. As with most other top slots, Book of Dead has five reels. It also has a player-friendly RTP of 96.21%.

Mega Joker

Mega Joker is a fruit-filled three-reeler that consciously calls back to the old one-armed bandits from the golden years of Las Vegas and Atlantic City. Released by NetEnt in 2011, its appeal comes from its sheer simplicity and the fun way it simulates the look and feel of physical slot machines – complete with a second set of three reels at the top of the screen. It also boasts a pretty impressive RTP of 99%, making it a top find at operators like Golden Nugget Casino and Hard Rock Online Casino.

Mega Moolah

Microgaming released Mega Moolah in 2006, and this progressive jackpot has since become famous for the massive, seven-figure prizes won by some very lucky players. The five-reel game has vivid and colorful animal graphics but not much in the way of story, so it’s perfect for those who just like to play without too many distractions. The RTP is lower than others on this list at 88.12%, but if you prefer to chase those bigger jackpots rather than a more frequent string of little wins, this might be for you.

Goblin’s Cave

Goblin’s Cave is an enjoyable little three-reel game from industry leaders Playtech. The cartoonish graphics give it a fun vibe, with the goblin character himself a curiously cute creature complete with slippers and spectacles. The gameplay is noteworthy because there’s an element of strategy involved. When you hit spin, only the bottom set of reels comes up. You can then pick which of the symbols to hold – these are added to the other two reels, and you then spin again. If played using optimal strategy, the RTP reaches as high as 99.32%.

Jackpot 6000

Jackpot 6000 is a retro-style game released by NetEnt in 2014. Like Mega Joker, it’s designed to resemble a real-life Vegas slot machine. It even depicts the wider casino floor behind the machine itself. If you like the simplicity of three-reel slots, without the distraction of storylines and mini-games, then Jackpot 6000 could be the ideal game for you. You can even opt to gamble your winnings with a heads or tails flip, and the game offers a high RTP of 98.9%.


There are more Ancient Egyptian slots than you can shake an ankh at, but Cleopatra is one of the earliest examples of the genre. Released back in 2002 by International Gaming Technology (IGT), it’s still a staple at sites like BetMGM Casino and Ocean Online Casino. This 95.13% RTP game has five reels emblazoned with hieroglyphs and scarab beetles. While it doesn’t look as glossy and advanced as more contemporary online slots, it’s worth seeking out for nostalgia value alone.

Lucky Leprechaun

Irish-themed slots are a major genre in online casinos, and Lucky Leprechaun is a top example from Microgaming. Released in 2015, the game has five reels and goes all-out on the Irish imagery with fiddles, pints of Guinness, and leprechaun hats among the symbols. Vibrant and colorful, it’s a lot of fun to play even if you aren’t blessed with the luck of the Irish. It also has a respectable RTP of 96.33%

Book of 99

Book of 99 is one of the newest kids on the block, having only been released in 2021 by Relax Gaming. It whisks players to Ancient Greece, so the visuals include classical architecture and mythical creatures featured across its five reels. While the esthetic is bound to appeal to lovers of historical slot games, one of the biggest draws here is its frankly superb RTP percentage of 99%.

Slot Game Features

While online slots vary widely in terms of how they look, there are certain features that are common to the majority of slot games.

Bonus Features

Many online slots have bonus features that can be unlocked at any point. You’ll usually be able to access these when a certain number of scatter symbols come up on a given spin. Bonus features can consist of free spins rounds, prize multipliers, and arcade-style mini-games, and many top video slots really push the boundaries on this front.


Wilds are symbols on slot machines that can take the place of any others, allowing you to create winning lines. For example, if you play a three-reel game and have the same symbol on reels one and three, with a wild symbol in the middle, this will count as a winning line.


Scatter symbols have the power to trigger bonus features if the right number comes up after a spin. The good news is they don’t necessarily need to be lined up to work their magic. For example, getting three scatter symbols anywhere across the reels might take you to a bonus round or grant you bonus spins. The exact ins and outs will be explained in the specific game’s instructions.


When triggered in certain games, multipliers do exactly what the name suggests – they multiply the amount that you win. They’re often found in bonus rounds, where the multiplier will be applied to the number of free spins or the amount of cash you’ve won in the round.

Frequently Asked Questions

  • Can you win real money playing online slots?

    Yes, it’s absolutely possible to win real money by playing slots online. You can either place bets using your own funds, or make use of any bonus credits or free spins offered by the best online slots sites. Just keep in mind these may come with terms and conditions such as maximum win caps and wagering/playthrough requirements.

  • Do you need to make a deposit to play slots online?

    Most often, yes. However, some online slot sites offer bonuses with no deposit needed. You might get a batch of free spins just for signing up as a new member, for example. Of course, strings may be attached in the form of wagering/playthrough requirements, so check the fine print to make sure you’re comfortable with the T&Cs.

  • Can you trust our slot site reviews?

    The slot site reviews at Gambling Deals are completely impartial and written by industry experts, so you can trust us to give you honest and accurate information about each website. We only list legit, licensed sites, so you can feel confident clicking the links to our recommended online casinos.

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