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Are you wondering which brands feature among the best online gambling sites and best sweepstakes casinos in the United States or even the world? You may be looking for a new online casino to play and need more inspiration.

Whatever the case, Gamblers.ORG is here to run you through some of the best casinos and sportsbooks available to US players. We’ll explain exactly what’s so great about them through mini-reviews. In addition, we’ll reveal more about the different types of gambling sites and what you can expect to find there.

Types of Online Gambling Sites

There are lots of different ways to gamble on the internet. Some websites specialize in certain areas, while others combine several. Of course, the most extensive online gambling sites in the world tend to fall into the latter category. Let’s look at the most common gambling sites in the United States.

Real Money Online Casinos

Americans spend around $60 billion a year playing casino games. While much of that occurs in land-based casinos, websites and mobile apps are growing in popularity. As states continue to loosen regulations around gambling, we’re seeing a sharp increase in the number of online casinos.  Most of the best online gambling sites now offer a selection of video slots, classic table games, and even live dealer options.

Crypto Casinos

Since the development of Bitcoin in 2009, cryptocurrency usage has grown steadily. These digital currencies are not quite mainstream for the time being, but online gambling sites were among the early adopters. A crypto casino is the same as a regular online casino. However, you use crypto, rather than US dollars, to deposit, withdraw and gamble.

More and more online casinos choose blockchain technology to create fair and transparent gaming. For now, the world’s best crypto gambling sites are based offshore, as they aren’t allowed to operate in the USA. However, if crypto casinos were ever legalized in the country, that would likely change quickly.

Social Casinos

These started in states where online gambling is illegal as a way to get around the ban. They allow you to play casino games without using real money, including jackpot slots, bingo, and table games. Instead, you play using an in-house currency with no real world value.

These tokens can later be exchanged for rewards like gift vouchers, merchandise, or real money. But the primary purpose is to have fun and make friends while enjoying your favorite games. Social casinos have proven so popular that they’re continuing to grow even where online gambling is now legal.

Online Bingo Sites

Many of the country’s top online gambling sites offer bingo, the classic number-drawing game. The premise is simple: you purchase cards containing randomly chosen numbers before balls are pulled out of a drawing machine. Each ball has a number; you’ll mark it off if it matches one on your card.

Online bingo sites offer different play methods, from shorter 30-ball games to traditional 75-ball and 90-ball games. Prizes can be awarded for filling in lines, corners, and unique patterns and completing the elusive whole house.

Sports Betting Sites

Sports betting is a popular pastime globally, and the United States is no exception. It’s a great way to liven up a game in which your team isn’t playing. But it’s also a great way to demonstrate your knowledge of sports!

Almost all of the best betting sites in the world offer a sportsbook. This often includes a racebook, allowing you to bet on international horses. But at the very least, the best bookmakers will provide comprehensive coverage of the NFL, NBA, and MLB.

Fantasy Sports

Instead of betting on real games, fantasy sports involve drafting a fictional team of the world’s top players. How these athletes perform in real life determines your score in the fantasy competition. Pay a fixed fee to enter, pick your team, and await the results.

Some large sporting gambling sites in the United States, such as those featured in this guide, started life as fantasy providers. FanDuel and DraftKings are now among the biggest names in bookmaking.

Online Poker

Online poker exploded after Chris Moneymaker won the World Series of Poker Main Event in 2003. He qualified for the event by playing online satellite tournaments, showing that any amateur could compete against the best without paying the $10,000 entry fee. 

Since then, many of the world’s most famous online gambling sites have offered online poker to their players. There are some dedicated sites, like PokerStars, for instance. But an excellent gambling site will provide poker games alongside their casino and sportsbook.

What Makes the Best Online Gambling Sites So Good?

Why did we choose the sites featured on this page? Are you looking to do some research for yourself? There’s a lot to consider, but the following factors are among the critical components of the best gambling sites.

Betting Opportunities

The primary consideration when choosing a good gambling site has to be the range of betting opportunities. After all, who cares how fast the withdrawals are or how good the customer service is if you can’t place the bet you want?

In short, the more the merrier. The greatest online gambling sites in the world offer everything. A sportsbook with complete coverage of the planet’s top leagues. Casino games, including the latest live dealer products and hundreds, if not thousands, of video slots. Online poker, bingo, fantasy sports – you name it, they supply it.

License and Security

The next most important factor when choosing a good gambling site is how secure you will be. It’s never a good idea to play at unlicensed casinos or sportsbooks, regardless of their size. You work hard for your money, and it makes no sense to risk handing it over to a company that a reputable gambling regulator doesn’t vet.

In addition to checking the site’s license, you should also look for on-site security features. The world’s best online gambling sites employ encryption technology such as SSL (Secure Sockets Layer). This protects your banking details against third-party interference. 

Banking Options

Speaking of banking, all the most significant online gambling sites ensure their customers have plenty of payment methods. Some players prefer traditional options like bank wires or debit and credit cards. Younger players may like mobile apps, such as Apple Pay or Venmo. Covering as many as possible is the best way to keep everyone happy.

In addition to seeking out a wide range of choices, checking the deposit and withdrawal limits is essential. Some sites have high minimum deposit amounts, excluding the more casual player. Others let you deposit small amounts but then impose high withdrawal limits, making it hard to cash your money out. Watch out for hidden withdrawal fees, too.

Bonuses and Rewards

With so many high-quality gambling sites to choose from today, there’s never been a better time to play. Brands must offer a generous signup incentive to attract new customers. That’s why all of them, not just the best online gambling sites in the world, provide welcome bonuses.

Moreover, the top sites try their best to reward loyal players who stick around. You’ll find reload bonuses, cashback deals, free spins, and exciting promotions. We’ll discuss these further later in this guide.

Customer Service

Customer service is crucial, an underrated element of the online sportsbooks, casinos, and poker sites. In an ideal world, you’ll never have to speak with the support team. But if you experience a glitch, mainly if it concerns payments, it can be a stressful experience.

The best sites make life easy with 24/7 live chat and telephone services. Email, instant messaging, and social media support are always lovely to see. The agents must be respectful, polite, and knowledgeable, whatever channels are available.

The online gambling sites understand that, without cash, there can be no gambling. They try to make things straightforward by supplying a range of convenient, secure, and fast payment options. Let’s quickly run through the most common methods.

Credit and Debit Cards

Plastic remains a staple at all of the best online casinos in the world. However, depending on your location, you may not be allowed to use credit cards. Expect to wait between three and five business days for a withdrawal.

Biggest Names

  • Visa
  • Mastercard
  • American Express
  • Discover


These are faster than debit and credit cards, processed in less than 48 hours. They’re also very convenient for storing and moving your gambling bankroll between the different sites.

Biggest Names

  • PayPal
  • Neteller
  • Skrill
  • MuchBetter

Online Banking

This is an increasingly popular way to fund accounts at the world’s top online gambling sites. Naturally, the exact payment processing options available will depend on your location. Deposits are quick, but payouts could take several days to arrive.

Biggest Names

  • Interac
  • Trustly
  • ecoPayz
  • Klarna


Undoubtedly one of the fastest ways to deposit and withdraw, many of the best casinos in the world are not allowed to offer cryptocurrency. US regulators remain particularly scared of the anonymity aspect of these virtual currencies. 

Biggest Names

  • Bitcoin
  • Ethereum
  • Tether
  • Litecoin

Mobile Payments

The USA’s most prominent online casinos are finally starting to accept mobile payment options. They’re quicker than traditional options like bank cards. But the convenience appeals the most since they’re stored on your phone.

Biggest Names

  • Apple Pay
  • Boku
  • Pay By Phone
  • Google Pay

Promotions at the Best Online Gambling Sites

None of the world’s most reputable online gambling sites would be where they are today without a range of bonuses and promotions. In a competitive industry, these brands must offer rewards to entice and retain new players. Keep your eyes peeled, and take advantage of the following promotions.

Deposit Match

All of the best online gambling sites offer some signup incentives. Although the welcome package may contain several elements, a deposit match bonus is usually the primary offer. When you fund your account for the first time, the casino or sportsbook usually adds a bonus percentage.

No Deposit Bonus

You’ll find a site offering a no deposit bonus if you’re lucky. Here, you don’t even need to fund your account. Sign up and start playing with bonus funds supplied by the house. Only the most significant online gambling sites can afford such promotions, as players get something for nothing. 

Free Bet Token

This is precisely what it sounds like. Place a sports bet without using your money; if it is, you can keep the profits, no strings attached. The largest sports betting sites tend to give these away in return for completing some task, such as placing a real money bet. But they sometimes form part of a welcome package, too.

Bet Insurance

Many of the world’s legit sports betting sites offer insurance on sure bets. Often, you’ll find that your first real money wager will be refunded as a bonus if it loses. Other promotions include parlay insurance, where you’ll receive a consolation prize if one leg lets you down.

Profit Boost

Many of the best sportsbooks in the world offer daily promotions where selected bets are enhanced. If you win, you’ll earn a percentage increase on the true odds of your wager. Some sites even provide tokens, allowing you to apply the profit boost to whichever market you wish.

Free Spins

The largest online casinos always seek new ways to reward loyal players. Free spins are a common way to win prizes on slots without risking your cash. You’ll often receive several free spins simply for reloading your account.


Regulars at the most significant online gambling sites can benefit from cashback bonuses if they suffer an unlucky losing streak. The time frame will vary, most commonly every month or every two weeks. And the specific percentage refund is often linked to how long you’ve been playing at the site.

Loyalty and VIP

The online gambling sites know how to look after their loyal players. They run structured programs where spending real money earns you points, just like air miles. The more you accrue, the higher you’ll ascend the ranks, collecting increasingly generous rewards.

How To Join the Best Online Gambling Sites in the US and Beyond

All of the best online gambling sites want to make life as easy as possible for their players. As such, it’s usually simple to sign up at such brands. Nevertheless, here’s a quick walkthrough to help you get started if you need help. 

Choose a Gambling Site

First, pick one of the brands featured in this guide to the most extensive online gambling sites. Follow our links to ensure you arrive at something other than a clone site looking to rip you off.

Create an Account

Open a new account by clicking the relevant button on the homepage. It is usually marked “Register,” “Sign Up,” or similar. Add a few personal details, accept the terms and conditions, and you’ll be up and running within minutes. 

Deposit Your Cash

Most of the top online gambling sites available to US players are real money casinos and sportsbooks. Head to the cashier and fund your account if that’s how you wish to play. If you’re joining a social gaming site, purchase a coin package from the store instead. 

Verify Your Identity

You can withdraw real money or exchange sweepstakes coins for prizes once you complete the necessary security checks. Some sites will only let you play after verifying. All of the largest casinos in the US require identity verification checks to comply with the terms of their license.

Have Some Fun

You’re all set to play once you’ve opened your account and completed the verification process. The best online gambling sites offer hundreds, if not thousands, of betting opportunities, so you’ll never be short of things to do. Have fun!

Top Online Gambling Sites Reviewed

Okay, you’ve seen the shortlist. Now it’s time to learn more about the most extensive online gambling sites available to players in the USA.


Since its foundation as a fantasy sports site in 2009, FanDuel has become one of the most potent names in gambling. Not content with creating one of the top sportsbooks in the US, they’re also dominating the online casino space. This is primarily thanks to a highly user-friendly website for both mobile and desktop, plus a top-quality app.

Game Selection

In addition to an extensive collection of fantasy sports competitions, FanDuel is now among the world’s best sports betting sites. It’s the leading bookmaker in the United States, in terms of market share at least, closely followed by DraftKings. 

The main reason for its success is the extensive selection of betting opportunities, particularly its US sports coverage. For instance, you’ll need help finding more generous odds on NFL, MLB, and NBA games. But it’s not just the domestic lines and props where FanDuel excels. As you’d expect from one of the world’s largest online sports betting sites, dozens of international sports are available, including soccer, cricket, and golf.

In addition, in those states where such games are legal, FanDuel has one of the country’s premier live dealer casinos. Partnering with leading supplier Evolution, you can enjoy plenty of classic table games, not to mention engaging game shows hosted by charming dealers.

What We Love

There’s much more to becoming one of the online gambling sites than a sizable game library. One of our favorite aspects of FanDuel is the variety of secure, quick, and convenient payment options. Only some sites have embraced mobile wallets like Venmo and Apple Pay. But FanDuel certainly has.

Another reason to love this brand is the impressive mobile app. First of all, it’s intuitive and easy to use. But the sleek interface and classy design also contribute heavily to the feeling of playing at a premium gambling site.


  • Biggest online sportsbook in the USA
  • Extremely competitive odds on US sports
  • First-class live casino product
  • Excellent choice of payment methods


Another of the country’s licensed online sports betting sites, DraftKings, is just a little behind FanDuel’s market share. In fact, in some US states, it’s the leading brand. Like its biggest rival, it started in the world of fantasy sports back in 2012. But since launching what has become one of the largest online sportsbooks in 2018, the site has continued to expand its range.

Game Selection

DraftKings is another example of a terrific all-around gambling site. The sportsbook is simply fantastic, with in-depth coverage of most international sports. However, it’s the USA’s most popular league, where it excels, offering hundreds of player props and betting lines. Moreover, the odds are frequently among the best in the country.

If you’re more into casino games, you’ll love the sizable Selection on offer at DraftKings. With over 300 titles, it may be smaller than many offshore casinos. But that comes down to restrictions imposed by local regulators. They partner with several online casino giants, including NetEnt, ensuring the highest quality games.

What We Love

As you’d expect from one of the best online gambling sites, everything about it oozes quality. For instance, the DraftKings sportsbook has the best bet slip in the business. It’s far more compact than many competitors, taking up less space on your screen. But we love how things automatically change as you add selections, offering the most intuitive options, including parlays and teasers.

Another great feature of DraftKings is the in-house promotional currency, DK Dollars. Most of the planet’s most significant online gambling sites offer free bets for the sportsbook or casino credits to play slots. But DraftKings puts you in control, letting you spend promotional dollars wherever you like, including in the DraftKings Marketplace.


  • Trustworthy and respectable brand
  • Intuitive site design, especially on mobile
  • Lots of generous and flexible promotions
  • 24/7 live chat support


On land, MGM International is responsible for some of the best US and world casinos. So, when they partnered with sports betting giants Entain to create BetMGM, we knew to expect a high-end online product. Particularly when you consider that they also operate other major gambling brands, including Party Poker. So far, players haven’t been disappointed, and BetMGM is consistently ranked as the third-biggest gambling site in the USA.

Game Selection

Regarding land-based gaming, MGM International runs some of the largest casinos in the world. That expertise has transferred to the online gambling world since BetMGM boasts one of the best internet casinos in the country. 

Not only can you find countless slots and table games from top providers like Playtech and IGT. But it’s also possible to enjoy online poker tournaments and cash games, such as Texas Hold ’em, Omaha, and Seven Card Stud. You can also enjoy a selection of video poker titles, number games like keno, and a complete live dealer casino.

The BetMGM sportsbook is unquestionably one of the best around, helping this brand to cement its place among the most significant online gambling sites. There are dozens of sports, including detailed coverage of the USA’s favorite competitions. But the user interface is also right up there with the best.

What We Love

There’s a lot to love about BetMGM, but the Selection of bonuses and promotions is among its standout features. First, some sizable welcome bonuses are in store for new players. Sportsbook bettors will receive up to $1,500 back in bonus bets should their first real money wager lose. At the same time, casino newcomers can bank up to $2,500 thanks to a 100% deposit match offer.

If that wasn’t enough for you, the M Life Rewards program is arguably the best casino loyalty scheme in the country. There are countless other offers, too, including a potentially lucrative Refer a Friend bonus. Here, you can pocket up to $50 for every buddy recruited!


  • Huge welcome bonuses
  • Competitive sportsbook odds
  • Online poker available
  • Generous rewards program


The cryptocurrency casino was founded in 2017 and has proven extremely popular with players worldwide. However, due to US laws, they are allowed to operate differently. That led to the creation of Stake.US in 2022. Although the platform looks and feels the same, there’s a twist. None of the games can be played for real money.

Game Selection

Stake.US is a social casino, meaning you’re playing for fun. There are 500+ titles in the library, including classic table games like roulette and blackjack, video slots, and several scratch cards. But all of them are played using a virtual currency with no real world value.

You can earn Gold Coins by registering and using them to play any Stake.US games. Prizes are also paid primarily in Gold Coins, but it’s possible to collect Stake Cash, a second in-house currency. Stake Cash can be exchanged for cryptocurrency, meaning earning prizes with an actual monetary value is possible.

The best part of the Stake.US game library is undoubtedly the Stake Originals collection. These games are unique to this particular casino. Mostly, they reimagine classic products, including blackjack, video poker, and roulette, as simple, fast-paced games. However, some genuinely innovative releases here put you in control of how much risk is involved.

What We Love

Stake.US can become one of the largest casinos in the United States. Even though it’s not a traditional online casino, this social gaming site is taking off with a new generation of players. 

First, a live chat feed is displayed on the right-hand side of the screen, allowing you to socialize and make new friends. Your account’s “Challenges” section also adds a fun gamification layer. This pays Gold Coins and Stake Cash whenever you complete preset missions. 


  • One of the best social casinos in the world
  • Collection of unique games in Stake Originals
  • Fun and rewarding challenges
  • Live chat feed encourages player interaction


Following in the footsteps of Stake.US, Funrize is another popular social gaming site threatening the dominance of the largest US casinos. There are some exciting games here that you will only find at some of the biggest casinos in the US. What’s more, there are two different gameplay modes to enjoy.

Game Selection

American only really enjoys select casino slots. Most of these are supplied by up-and-coming developer NetGame Entertainment, including several jackpot games. Standout titles include Book Of Nile: Lost Chapter, a Rich Wilde-inspired slot, and the always-humorous Poker Dogs.

Funrize won’t be among the country’s top online gambling sites until they add table games. But, for now, you can take a break from slots by enjoying a handful of unusual fishing games. These arcade-style shooters are hugely popular in Asian casinos, combining skill with chance. 

Fishing Kingdom, for instance, requires you to hunt down various forms of marine life, including rays, pufferfish, and sharks. The RTP of this esports-style game is pegged at 96.02%, which is comparable to the average video slot. Plus, playing for extremely low stakes is possible, making it the perfect game for a social casino.

What We Love

There are two different ways to enjoy Funrize games. The first uses Tournament Coins, an in-house currency that can be purchased to facilitate your gaming. However, you can easily acquire these for free by creating a new account or participating in other promotional activities.

The second option, only unlocked after making your first authentic money purchase, is to play using Promotional Entries. You’re entitled to 100 of these every day, completely free, but they cannot be paid for. Playing this way offers the chance to win real money prizes.


  • Welcome bonus of 75,000 free coins
  • 100 free promotional entries per day
  • Play slots for fun and win prizes
  • Exciting and unique fish shooting games


There are many similarities between TaoFortune and Funrize, making it challenging to choose between the two. Although TaoFortune boasts more interesting gamification elements, as we’ll discuss shortly, it has a slightly smaller game library. Still, the coin packages offer good value for money, with frequent discounts to be found.

Game Selection

Unlike some of the world’s best online gambling sites, you won’t find thousands of games here. For the moment, due to US licensing restrictions, the game library is mainly made up of slots. The Collection has several jackpot games, with most of the titles NetGame Entertainment provides.

Like its sister site Funrize, TaoFortune also features several fishing games, including the sickly sweet Candy Heroes. Our favorite is Thunder Fishing, which fuses ancient Greek mythology with the classing fish shooting game.

You can play any of these games using Tao Coins, which may not be exchanged for real money prizes. Alternatively, you can switch to Secret Coins mode at any time. Moreover, you can secure up to 100 Secret Coins mode daily without spending a penny.

What We Love

Should you wish to top up your supply of coins, you can purchase using reputable and secure payment methods like Visa and Mastercard. The packages are affordable, starting from less than $5, and you’ll usually find great value discounts in the store.

We also enjoyed the Magic Bag bonus, which offers free coins daily, and the Piggy Bank feature. Here, you can save additional funds when you play in Secret Coins mode. You can break open the piggy bank every seven days and cash in your rewards.


  • Affordable coin packages
  • 100 daily Secret Coins for free
  • Selection of jackpot games
  • Enjoy quests and earn additional prizes

Best Online Gambling Sites – Final Thoughts

Thanks for reading our guide to the most extensive online gambling sites in the United States and beyond. We hope you’ve learned everything you needed and can now enjoy some leading brands.

So, whether you’re ready to place a sports bet or try thrilling casino games, register with one of these top sites. You’ll collect a generous welcome bonus for doing so. But above all, you’re in for a fantastic experience.

Best Online Gambling Sites – FAQs

As long as you stick to this guide’s most extensive online gambling sites, yes. We only recommend respectable, properly licensed brands with a proven track record. 

We’ve picked out some of this page’s biggest online gambling sites. They are hugely popular across the United States and beyond.

This depends on where you live since certain types of gambling are banned in different states. Some of the largest casinos in U.S. states are not allowed to offer sports betting, for example. However, generally speaking, the brands featured in this article are among the biggest names in the country.

Absolutely. The local authorities regulate all of the biggest online gambling sites. This ensures they handle your deposits correctly, payout on time, and offer fair casino games. Top sites only offer games certified by third-party testing labs like eCOGRA or GLI.

For the most part, yes. All of the biggest online betting sites in the world offer a mobile site, at the very least, if not a native app. In the United States, it depends on where you live. Mobile casinos and sportsbooks are still banned in some jurisdictions.

They are genuine. Online gambling sites always offer bonuses and promotions because the industry is so competitive. The biggest sportsbooks and casinos understand the needs of their customers and try to reward them for their loyalty.

Yes, it’s certainly possible at many of the largest casinos. Not all sites offer free-to-play games, but many do. You can enjoy slots in demonstration mode, a great way to learn the features before risking real money. Some sites also let you play table games for free.