Biggest Online Casinos in the USA

The United States of America might be enormous, but its gambling market is far from it. Still, there are more than enough gambling sites there, and many ended up on our list of the biggest US online casinos. If you find the largest casinos in the USA appealing, you’ll love what we have here for you.

The USA is a growing iGaming market, thanks to the loosening of the strict laws in place regarding gambling. For the past few years, US states have had the right to ban or legalise gambling on their own, which led many to open their doors to legal online gambling. Many US state markets are growing and flourishing, and that means only one – so are the casinos.

Even though they are flourishing in terms of legislation, the number of games is lower due to the fact that fewer content creation companies work there. But your favourite slot and live game producers are expanding their business in North America, so it’s a matter of time before we get a unique US market full of US-only gambling games.

In our guide below, we will introduce you to some of the biggest online casinos in the United States. We will focus both on delivering a list of large online casinos in the USA, but we will also show you how to recognise a high-quality casino in the USA, safe payments, and top gaming choices.

Stick around and find out what makes big casinos the largest ones out there and check out payments most US players use for casino deposits and withdrawals.


Biggest Online Casinos in the USA in 2024

Even though US online casinos aren’t as large as those in Europe or the UK, they are every bit as fantastic and entertaining as those overseas. Regretfully, we failed to find those with thousands of online games, as not many providers work in the USA at the moment (but we’re getting there).

Check out our top choices for the biggest US online casinos and discover the best games from Realtime Gaming, Betsoft, Evolution, and others. You can play both online and live games, claim massive casino bonuses, and pay with leading e-wallets and even cryptocurrencies. Use the filters to narrow down the search and enjoy the best of the best.

5 Biggest Online Casinos in the USA FOUND
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125% up to $3,000 Sign-Up Bonus
Target Markets: Australia, Canada, South Africa, United States Software: Betsoft Games: 320+ Cash Out Time: 24-48
Top casino and sportsbook in the USA and Canada. Curacao-licensed. Sports betting and casino bonuses. 320+ casino games.
$1,000 Welcome Bonus
Target Markets: Russia, South Africa, United States Software: Slotland Entertainment Games: 75+ Cash Out Time: 12 hours
Proprietary software & unique game offering. Wild range of bonuses & promotions. Low rollover. Fastest, safest possible withdrawals. Bitcoin
100% Match Bonus up to $3,000
Target Markets: United States Software: Betsoft, Realtime Gaming, Rival Games: 350+ Cash Out Time: 72 H
Reputable gambling operator. US Friendly Casino. Over 350 games. Massive welcome offers. Mobile-friendly casino platform.
325% Sign-Up Bonus up to $9,750
Target Markets: Canada, New Zealand, South Africa, United States Software: Realtime Gaming Games: 210+ Cash Out Time: 12 hours
Mind-boggling welcome offer. Exclusive online casino games offering. Instant-Play + Download. SSL encryption. 24/7 live support. Speedy withdrawals.
200% Welcome Bonus
Target Markets: Australia, United States Software: Realtime Gaming Games: 210+ Cash Out Time: 12 hours
Instant-play & download. Secured gaming environment. Impressive selection of casino games. Top-of-the-line bonuses, free spins on daily basis.

A Guide to the Largest Online Casinos in the USA

Gambling in America is not the same as playing casino games at casinos in Europe. Not only is America a completely different continent, it is also a unique market with its own set of requirements, rules, and practices.

It is not as bustling as the ones in Europe, but that’s mostly due to the legal side of things. Regardless, many sites can be classified as large casino sites, and we are about to show you how to know if a casino is large enough or no.

But we have to warn you, though – a smaller market means reduced casino sites, smaller lobbies, and fewer games. Adjust your expectations before you start browsing the biggest casinos in America.

A List of the Main Factors for Large Casinos in the USA

When we talk about the biggest casino sites in America, you are probably thinking about thousands of games, right? You are not wrong, as large US casinos do tend to offer impressive game lineups. But that’s far from being the most important thing.

There are things to consider when picking the best and biggest online casinos, which is why we invite you to check out our checklist of top 5 things to consider about US casinos.

Here is a list of factors the biggest online casinos in the USA must consider before they earn the title of the largest casinos online in America.

There are other important factors, for sure, but these capture the essence of playing at the largest online casinos in the USA. If you want to play at the biggest casinos in America, you will have to look for the following five items to tick off the list. Let’s discuss them a bit more.

Massive Game Portfolio

When we talk about large gambling casinos in Canada, Europe, and the UK, we are talking about gambling sites with thousands of gambling games. The numbers vary – 3,000, 4,000, or even more, the collection keeps growing each month thanks to prolific game producers. However, the situation in the USA is a bit different.

For starters, most EU providers are not welcome in the USA, at least not yet. They do not have the necessary licencing needed to enter the markets, so American players miss out on the fun games their Canadian neighbors and Europeans enjoy regularly. That is why the number of games at large US and large EU casinos has different standards. The biggest casinos in America rarely exceed a couple of thousand games, and most remain on the smaller side.

Licencing & Certification

The USA is a bit of a grey area when it comes to online gambling. Not many casinos work there online, and not every US state has gambling legalised – which is why it’s paramount you stick to recommended casinos only. There are so many shady casinos and rogue websites looking to swindle you out of your hard-earned money. That is why all online gambling websites listed here at BestCasinos – including the biggest online casinos in the USA – are licenced and certified by renowned testing labs.

The states of Nevada, New Jersey and Delaware have legalised gambling state-wide, so casinos working there have had to seek approval to work in the markets. Please try to refrain from visiting sites with unclear country restrictions, and those that are not transparent about the kind of licence they possess.

Multiplatform Accessibility

You want to play casino games but cannot be bothered with staying home plastered to your desktop? We feel you, and we couldn’t agree more. Thankfully, online casinos worldwide are recognising the importance of platform support and offer services across all screen sizes. Therefore, you can now play casino games on any device you want, including your latest iPhone, Android, or tablet.

There are several ways to play gambling games – but as download casinos became obsolete, instant play (no download casino sites) became the most popular option. And you can play either browser-based casino games or by downloading apps for phones. Mobile casino apps are not exactly widespread in the USA, but you can play at every large US casino site by visiting it via the browser on your smartphone.

Safe Payment Services

There is a reason why we consider payments an important segment. It is one of the best indicators of the casino’s reliability, as safe payments suggest the casino is safe too. On the other hand, shady casinos won’t bother with listing trustworthy services, nor they will include many options for the players. hence, when you are joining one of the biggest US online casinos, you are sure to find a solid banking offer that meets all your requirements.

Credit card payments are slow in the USA, so players mostly go for Skrill and Neteller. There is also the option of using cryptocurrencies, which is not possible at UK casinos. Bitcoin takes the crown as the most preferred choice, closely followed by Litecoin, Ethereum, Tether, and Ripple. Before you join, make sure your favourite payment service is listed as one of the options supporting deposits and withdrawals.

 Customer Support

Customer support is another vital segment of a casino’s offer. To be able to fully enjoy what the casino has to offer, you need to feel relaxed and safe – and the only ones who can guarantee that to you are the members of the Customer Support. When it comes to Customer Support in the USA, you can choose between live chat and email. Phone support is sometimes included, but not always, but most sites rely on live chat nowadays either way.

Live chat is great if the matter is urgent, but if you have something that needs a bit more clarification, we recommend sending an email. You can also check for FAQs, as those often help. Legitimate brands with big lobbies and enormous bonuses make sure to accommodate the players as there’s a lot on the line for all parties involved.

Most Popular Games at the Biggest US Online Casinos

The biggest US casinos have fewer games than EU or UK online casinos. The market is still smaller in comparison, and not many famous EU providers are working in the USA. Hopefully, the new laws will open up new opportunities for casinos in the USA to open online branches and welcome European game producers.

At the moment, most online players play video slots. There’s classic gambling too, but that’s reserved for land-based gambling sites, not online slots that much.

Surprisingly, the live casino scene in the USA is not as vibrant as in other markets. It’s growing, sure, but we are yet to see it reach the boom that is currently happening in European gambling markets. Instead, players focus on video poker, cryptocurrency games, and sports betting. Betting on sports is quite big in the USA, and many casinos double as sportsbook besides being gambling websites.

Among the most popular brands whose games you’ll see in the USA is Betsoft, which produces highly popular slots. But did you know Betsoft has a cool collection of table games and video poker? You can check it out right here at BestCasinos!

Here are top 5 most popular video slots played at large online casinos in the USA:

Don’t forget to check out our informative casino tutorials and guides for more tips and tricks – and game walkthroughs – for award-winning games. we also offer free play games in our game recension section, so be sure to check it our as soon as you can.

Biggest Casino Bonuses in the USA

US casino bonuses typically tend to be on the larger side, unlike UK or EU casino bonuses. The reason is that there are not as many gambling sites in the USA, especially not those that can be tagged as ‘the biggest US online casinos’ out there. But it is what it is, and operators have found a way to make do with big casino bonuses, chockful of free cash and even spins sometimes.

Among the types you can enjoy are welcome bonuses, free spins deals, and even cashback, reload, and other types of promo casino deals.

Oh, and another thing – US sites are commonly sportsbooks too, meaning they offer a variety of sports betting as well. And that means there are so many sports bonuses, as well!

Besides sports and casino deals, punters can also enjoy a variety of cryptocurrency bonuses, or deals available only for players depositing using one of the most popular cryptocurrencies.

If you want a large US casino with a large casino bonus – and other similarly gross promo deals in the future – check out our list below. We’ve listed the biggest three deals we could find at US large sites that are both big and fun to claim.

Check out the three biggest and best online casino bonuses at US online casinos.

Top 3 Biggest Casino Bonuses in USA

Casino Bonus Promo Code Claim
Uptown Aces $8,888 + 350 Free Spins UPTOWN1ACES Click Here
VipSlots Casino 200% up to $1,500 None Needed Click Here
Drake Casino 300% up to $6,000 None Needed Click Here

Safest Payment Options at USA’s Biggest Casinos

American players take the question of their safety very seriously. Other players do too, but the US customers do not have strict gambling regulations in place across the USA to protect them against harm. Hence, they do a lot of that protection on their own – by being pickier with casinos, and consciously choosing games and payment services.

One thing you should bear in mind about the US casino banking is that you are not very likely to encounter many payment services there. A handful of options are used there, including some card payments, e-wallets which are the most popular, and bank wire transfers.

Wire transfers are very slow, which is why a new wave of punters have taken to crypto payments to speed up the process, all the while keeping their privacy thanks to anonymous blockchain transfers. You can use cryptocurrencies as payment services at large casinos in the United States of America.

Check out the 3 most common payment services at US largest casinos.

Top 3 Casino Banking at USA Casinos

Payment Name Payment Type Minimum Deposit/Withdrawal Payout Time
Bitcoin Cryptocurrency $10/$20 0-2 Days
PayPal E-Wallet $10/$20 0-2 Days
Bank Wire Bank Transfer $10/$20 0-2 Days

Please note that minimum deposit and withdrawal limits are subject to change depending on the casino. Before you check into a casino, make sure you’ve familiarised yourself with the casino’s deposit and withdrawal limits.

Cryptocurrency payments are not allowed in the UK and most EU sites, but Canada and US large casinos are quite fond of crypto payments. Check out more in our detailed guide above!

Benefits of Playing at the Largest Casino Sites in America

How can you know that you’ve made the right choice by picking the largest casinos in the USA? It’s easy – just look at the perks you are getting compared to the ones you get at small-scale sites.

The main and biggest difference is the size of lobby. You get infinitely more games to choose from, and there is a better choice of bonuses too. Besides that, the casino is more likely to cover better payments, so you are not doomed to only one or two banking method to deposit/cash out money. That in itself is a superb perk, but not even that is the peak – it’s security.

Massive gambling brands are more legit, or at least, are more likely to be legitimate. Thanks to years in the industry, management is not likely to let the hard work poured in the site go down the drain that easily, which means they’ll do everything in their power to make it worthwhile for you. Small sites are not like that. They care about customer happiness, but shady casinos are mostly small because they don’t bother with growing their popularity and audience (and they cannot).

Which is why playing at large US casinos is top-tier solution if you are looking for fun, entertainment, variety, and safety.

Frequently Asked Questions

What are the perks of playing at large casinos?

There are many good sides of playing at large gambling brands. The first is abundance – meaning you get more games than at smaller casinos. Another perk is the choice of bonuses, as you get better bonuses there. There is also better security as you are more protected from scams with safe payouts, a gambling licence, and efficient Customer Support. Large sites are more legitimate than smaller, seedier sites.

What are the largest casinos in the world?

Videoslots is considered by many to be one of the biggest casino sites in the world, having nearly 10,000 casino games. Few sites can challenge that number of games. Check out other big casinos right here at BestCasinos and compare.

How can I know if a US casino is large enough?

Large casinos typically have more than 1,000 games, reliable certification, and solid bonus offers. For more information, check out our list of main factors above.

What bonuses do US online casinos typically offer?

Bonuses found at large US casinos are the regular bonuses found at online casinos worldwide. You get free spins, chips, and cash prizes. Cashback is often included, as well as reload and refer-a-friend deals. You might even participate in loyalty programs full of VIP perks.

Are US casinos licenced?

The short answer is yes, they are. The long answer is that each state has a special set of rules for gambling (and online gambling) which means casinos applying for work in specific gambling-friendly US states must apply for a corresponding licence from the overseeing institution.