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Your Complete Guide to the Best Online Casinos in 2021

At VegasSlotsOnline, we are dedicated to helping you find the top online casinos to play at. Our expert team has reviewed hundreds of sites to bring you the most reputable casinos on the web. Our sites offer huge bonuses, quality games, brilliant banking and all the other features you could want. We also have a detailed guide that will walk you through the pros and cons of playing online, our strict vetting process, and the factors you should look out for when choosing a casino.

Ready to get started with your online gaming journey? Check out our best casino sites in for 2021:


The Top Online Casinos for March, 2021:

#1 Casino
Banking Methods
Operating Systems
Rating Casino - #1 Pick with 100+ Vegas Slots Casino features more than 100 Vegas style slot machines. The casino is open to free and real money players with games starting as low as one cent up to $125 a spin. The slot machine features include progressives, instant win bonus rounds and in some cases, the slots are highly volatile. This casino has a payout rate of 98.26% making it our top pick for real money Vegas slot players.

  • Accepts Players From United States
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  • 100+ Vegas slot machines
  • Award winner: recipient of numerous "best casino" awards
  • Accept Visa, Mastercard, AMEX and more
  • All games are regularly independently tested for fairness
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Banking Methods
Operating Systems
  • Play on iOS and Android devices
  • Redeem comp points for real cash
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  • Claim a great three-part welcome bonus
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Why You Can Count on Our Best-Rated Online Casinos List

There are so many casino sites out there claiming to be the best, so how can you trust that our recommendations are legitimate? Here’s a rundown of what makes our casino list trustworthy, fair and reliable:

Our Expert Team Consists of Industry Veterans

Several members of the VegasSlotsOnline team have been gambling online since the 90s, ever since the first casino sites cropped up. For this reason, we know what makes a specific game, bonus or casino brand a cut above the rest. We are a team of independent reviewers, applying our knowledge from decades of experience in the industry to assess sites and pick the crème of the crop for our readers.

We Evaluate Sites Through A Strict Review Process

Each casino review we conduct follows a precise methodology, to ensure the process is objective and unbiased. For a site to make it on our top online casinos list, it must meet several key criteria relating to safety, licensing, professionalism and quality. We personally test these casinos ourselves, creating accounts, depositing cash and playing the games so that we can have a hands-on review experience. We discuss our stringent vetting process in further detail below.

We’ve Tested 1,200+ Casinos and the List Keeps Growing

We’ve reviewed every online casino offering on the web and keep an eye out for the latest sites to add them to our database. In fact, any rogue or scam sites we come across are instantly added to our casino blacklist. Our goal is to be a reliable source of information for our readers, hence why we’re honest and pull no punches. We’re also constantly updating this page based on our findings, so that you’ll always have access to the very best casino sites.

Over 1 Million Visitors a Month Trust Our Recommendations

Each month, VegasSlotsOnline receives over a million visitors from all over the world, all of which leave feedback and suggestions. We listen to what everyone has to say to make improvements to our site and to this specific page. Hearing back from our visitors about a positive casino experience based on our recommendations motivates us to keep doing what we’re doing.

The Pros and Cons of Playing Online

You might be wondering what are the benefits of playing at the best casinos online compared to visiting your local brick and mortar casino. We outline the advantages below, and we also point out the disadvantages, so that you can get a complete overview of the online gambling experience.

Convenience and Comfort

When you want to play at a land-based casino, you need to visit the place physically. On the other hand, you can play at top casino sites from anywhere via your desktop PC, mobile or tablet. You can also access online casinos at anytime of the day, which is not always the case with their land-based counterparts.

Casino Bonuses Galore

One of the major advantages of the best-rated online casinos is the fact that they offer so many promotional bonuses and lucrative rewards to their members. Welcome bonuses, weekly promotions, and monthly prize draws are some of the perks exclusive to playing online.

Lower House Edge

The house edge is the predetermined advantage the casino has so that it can turn a profit from its games. Since online casinos have lower costs then their brick and mortar equivalents, the house edge on their games is smaller, and hence the player’s chance of winning increases.

Wider Range of Stakes

The lower costs of operating an online casino means that most sites cater to all budgets and offer a wider range of stakes to real money players. You can play for as little as five cents a spin on your favorite slot or bet as much as $500. Most times, the choice will be yours.

Variety of Games

Top-rated casino sites are not restricted by physical space the same way a land-based casino is. For this reason, online casinos can offer hundreds, or sometimes thousands, of slot machines and games. Expect casino staples like roulette, craps, and blackjack as well as less common titles.

Lack of Social Experience

Arguably, the main disadvantage top online casinos have is the fact that players cannot enjoy the same social experience offered at live gambling rooms. With the exception of live dealer online games, you cannot chat and socialize with others when playing at casinos on the web.

Fast Play Can Lead to Quicker Losses

Online casino games have a much faster pace of play than their live counterparts. Most games only need a few clicks of a button, and don’t require a croupier manually performing actions at a table. Such fast-paced play can lead to quicker losses, so we advise you to bet within your budget.

Our Vetting Process – How do We Rate Top Casinos Online?

How can we be so confident that you’ll be safe by playing for real money at our selected online casinos? The secret lies in our stringent vetting process. We know that our recommendations can also impact our reputation, so we’re careful to ensure that each and every casino site we suggest is safe and trustworthy, and offers a quality gaming experience for players.

In order to be as certain as possible about our best casino sites, we take a look at numerous factors when evaluating each site. These generally break down into a few categories: items related to safety and ensuring the sites are legitimate, the quality of the games you can play, and the efforts made by operators to give players the best experience possible.

Of course, it’s a bit more complex than that. Read on to learn more about how we figure out which sites make it to our list of best-rated online casinos, and which ones should be avoided at all costs.

Licensing and Regulation

There’s still a perception by some politicians and gamblers alike that the internet gambling industry operates in a “Wild West” environment where there are no rules, restrictions or regulations. In reality, virtual casinos are quickly accepting oversight similar to their land-based counterparts. All reputable sites on our list are regulated in at least one established jurisdiction that serves to provide oversight and consumer protection for players.

Nowadays, many countries, provinces, and states are requiring casino sites to obtain local licenses in order to operate. We always recommend you go for online casinos regulated by your local gambling authority, or by governing bodies that can issue licences to sites in your jurisdiction.

Just so you can familiarize yourself with casino licencing, we’ve provided a quick overview of the most prominent gambling authorities across the globe:


The number of regulators around the world


The year the first gambling license was issued by Kahnawake GC


The current market-size of the iGaming industry


The biggest fine ever given to a casino for non-compliance, issued by the UKGC

Malta Gaming Authority

Malta Gaming Authority

Year established: 2001
Licensed operators: 450+
The Malta Gaming Authority (MGA) is one of the most respected gambling commissions globally. Its mission objectives include creating a secure environment for online gamblers and keeping the iGaming industry free of criminal activities.

Gambling Commission

United Kingdom Gambling Commission

Year established: 2007
Licensed operators: 450+
The United Kingdom Gambling Commission (UKGC) oversees the activities of all entities operating in the UK. It is famously the strictest gambling commission globally, which means that online casinos with a UKGC-license are some of the safest you’ll find.

Curaçao eGaming

Curaçao eGaming

Year established: 1996
Licensed operators: 450+
When you see a casino licensed by Curaçao eGaming, you know that it has been given a seal of approval by one of the longest-standing commissions in the world. Its commitment to anti-fraud makes it one of most reputable names in the industry.

Find New Online Casinos

Find New Online Casinos

Join our newest casinos for 2021 and enjoy exciting new offers.

Security Measures

When it comes to online casinos, nothing will ever be as important as the security of a site. That should be any player’s first priority, even over the flashy games and bonuses. An online casino may have a track record of being trustworthy, but blind trust is never a good thing, especially when disclosing your personal and banking information. Learn what the safety signs are so that you can look out for them.

Having a legal and reputable license to operate is generally an indication of safety, but that’s only the starting point. We have a checklist that we go through before we can fully acknowledge that a casino excels at security. Only then do we feel comfortable recommending it to you as a top casino site.


Any casino site that takes itself seriously, will take security seriously. They know it’s not just a trophy to display on their site. It’s an ethos. Any best online casino in our list can’t ‘just’ be secure – it needs to be secure in everything it does. The below is our guide to evaluating whether that’s the case for any casino we review:

How to Determine if a Casino is Secure

  • Licensed by a reputable gambling authority
  • Payment methods utilize latest encryption technology
  • Games tested by an independent agency for RNG verification
  • The site is protected with SSL, TSL and https and similar measures
  • The operator’s track record is favorable regarding its other brands
  • Terms & Conditions that clearly state that the player is protected in various scenarios
  • 24/7 Customer Support that can be reached several ways
  • Not licensed, or licensed by a shady commission
  • No indication of your payment information being encrypted
  • No indication that the games have been independently tested
  • No clear indication that the site takes protective measures
  • Negative reviews of brands owned by the same operator
  • Terms & Conditions that are vague or indicate that the player would not be protected in key scenarios
  • Limited contact details; lack of assurance that help is always available

Game Selection

Most people will tell you that the top online casinos should have hundreds of slot machines of all kinds and varieties. This is mostly true. When a casino has a massive lobby, you can join it knowing that you’ll never run out of games to play. It’s also a guarantee that you’ll find games that you like, no matter what kind of player you are. However, there’s an even more important question we ask when evaluating a site for our best online casino list: what is the actual quality of the games offered?

Take slots, for example. There are thousands of online slots, and many of them are pretty bad. If we see subpar slot games at a casino, it does nothing to boost the experience of the site. That’s why our top online casinos only offer the crème de la crème of online slots. That means having a solid mix of modern, classic and jackpot slots, made by leading software providers. Naturally, the same goes for table games and live dealer games. Even if a casino has one kind of game as its main focus, we expect to see consistent quality throughout its lobby.

If you want the filter the best casinos by game type, check out our guides below:


Live Dealer

Playing at the best live dealer sites means having moments where you forget that you’re not actually playing at a brick-and-mortar casino.



Most online casinos are brimming with hundreds of real money slots. Quantity is a valid consideration to have when picking sites, but the quality of the slots available is way more important.


Video Poker

The best video poker sites take the game you love and make it more dynamic – and despite being online, it’s still all about your skill and strategy.


Table Games

A massive range of roulette, blackjack, baccarat, craps, all with their own classic varieties and unique twists. That’s what you get at the best table games casinos.

Software Providers

Part of our casino games assessment when reviewing sites involves looking at the quality of the software providers available. There are hundreds of companies developing online games for casinos, and some of them are considered industry giants, while other smaller studios also create popular titles. Of course, there are some developers whose casino games seriously lack in quality, and we make sure that the sites we list on this page only feature reputable and professional software companies.

Here’s a quick overview of the most renown game providers in the online gambling industry:

Microgaming – This leading provider first came onto the scene in 1994 and has been releasing innovate casino games ever since. It’s one of the first to introduce progressive jackpot slots, with a shared prize pool between the different casino sites. Some of the largest prizes in online casino history have been won on Microgaming slots.

NetEnt – Net Entertainment have been pioneers in driving the casino market forward, developing slots, table games, video poker and live dealer games. They have more than 200 hundred customers, most of which are the largest gaming operators in the world. NetEnt’s slot machines are some of the most-played games around, thanks to their stunning graphics and cutting-edge features.

Playtech – Founded in 1999, Playtech has enough games in its portfolio to power entire casino sites on its own. The provider always keeps up the latest technology trends and has several casino games that have been optimized for all mobile devices. Playtech was one of the first developers to offer branded products, and as a result you can find games with your favorite comic book heroes and movie characters.

IGT - International Gaming Technology (IGT) is another well-known software provider that has made a name for itself in land-based casinos and online casinos. They were the first company to offer video poker machines in the 70s and have since created a diverse online casino games portfolio. IGT has created branded slots after partnering up with Sony Pictures and Freemantle Media and has also released a series of table and card games.

Other noteworthy software providers include Evolution Gaming, WMS, Novomatic, Yggdrasil Gaming, and BetSoft. Our review team are always on the lookout for these names in a top casino site’s lobby. We like to see a mix of big-shot developers and smaller companies who show promise with their online casino offerings.


When we review casinos, we really scrutinize the payment options available, because those determine how quickly and securely your money goes into and out of your account.

When it comes to payment options, there are two things a best online casino is bound to have. The first is a broad range of banking methods available to players. These include credit cards, eWallets like Paypal, bank transfer options, prepaid cards, and sometimes even cryptocurrency options. What you’ll also find at most top casinos are payment options included for the comfort of players in different areas. Visa and Mastercard and Bitcoin are the most convenient options for American players, while players from other parts of the world rank eWallets as their first choice.

You can filter the top-rated online casinos by your favorite payment method here:

Other things we look out for in the best casino sites include low transaction fees and the convenience of being able to withdraw using the same deposit method used.

Above all else, the best online casinos will have withdrawals that are both speedy and secure. Deposits at most casinos you check out will generally be instant – no surprises there. That’s never the case with withdrawals. Before we recommend a casino, we ensure it has the proper encryption methods in place to protect your data while also processing your payout in a reasonable timeframe.

Promotions, Bonuses and Freebies

Bonuses are one of the biggest perks of internet casinos, which is why we take them seriously when evaluating sites for this page. Not only do we pick apart the welcome bonus to see that you’re getting a great deal, but we also check out the bonus offers available to existing members of the site. We like to see casinos that award players for being regular members, be it through weekly bonuses, monthly promotions or a multi-tiered loyalty programme.

We’ve provided a breakdown of the most common bonuses you’ll get your hands on at the best casinos. Our team have also pointed out what you should look out for to know you’re getting a fair bonus.


No Deposit Bonuses

No deposit bonuses are generally free spins that casinos give out to its members without requiring them to deposit money. Oftentimes, no deposit bonuses can also be a fixed amount of cash players receive upon registration, or live dealer chips which can be used at the live casino lobby.

Not every casino will have a no deposit bonus for newly registered players, and that’s just fine – but they’re a great way of testing out a casino without using your own cash.

What to Look out for

  • Low wagering requirements
  • A reasonable expiry-date
  • No option to opt out of the bonus if desired
  • Inability to cash winnings made from bonus

Welcome Bonuses

Odds are that the welcome bonus will be the first thing you’ll see on a casino site. You receive a welcome bonus once you create an account and make your first deposit. This is typically a match bonus, which means you’ll receive free money from the casino that’s a matched percentage of your deposit.

We enjoy huge welcome bonuses like anyone else, but it’s important to not stop at the size of its match percentage. We check the underlying T&Cs to make sure players can genuinely enjoy it to the max.

What to Look out for

  • Reasonable wagering requirements (30x-40x is the average amount)
  • Your favorite games contributing towards the wagering requirements
  • A max cap on the winnings you can withdraw
  • Unfair maximum betting restrictions

Free Spins

Free spins can be given as part of a welcome bonus, but they can also be given out in dedicated weekly promotions. What we like to see is the chance to claim a relatively high number of free spins for a low deposit.

Generally, this kind of casino bonus can only be used on a designated video slot, or on a series of different slot machines. We give better rankings to casinos that let you use this bonus offer on more than one slot game.

What to Look out for

  • A fair amount of free spins for your deposit
  • The chance to sample different games
  • High wagering requirements
  • Too quick of an expiration time

Best Online Casinos for 2021 – Our Verdict

We hope that as you reach the end of this page, you have a clearer idea of why our best-rated online casinos outshine the rest. In the end, different people will gravitate towards different casinos. Each of us in the VegasSlotsOnline team has their own favorite best online casino from our list too.

The sites we feature for players in United States excel in every single way, so you can enjoy maximum entertainment with full security.

That being said, the sites that have made our best online casinos list would be a fine choice for anyone. They tick all our boxes, and we bet they’ll tick yours, too. After all, they’re some of the most popular online casinos around and millions of players use them with good reason. These casinos have conquered the internet and won’t be stepping down from their throne any time soon.

We like to empower our readers by giving them tools that will help them make the right choices online. If you want to be a savvy casino player who knows how to pick the best sites of the bunch, we suggest that you always consult our cheat-sheet:

Our Cheat-Sheet for Finding the Best Online Casinos


Step 1

Check whether the casino is licensed by one or more of the most reputable gambling commissions.


Step 2

Look out for all security measures that we mention above. Even not having a single one is a red flag.


Step 3

Evaluate whether there are enough titles in your preferred genre, and that the games are supplied by leading software providers.


Step 4

Research what other players say about that casino’s cashouts. Look out for the three big adjectives: consistent, fast and secure.


Step 5

Look into the quality of the bonuses and promotions offered. Remember, it’s not just the size of the bonuses. The T&Cs concerning them matter more.

Best Online Casinos FAQ

The fact of the matter is that with hundreds of internet casinos alive and kicking, there just can’t be one singular best casino. We can, however, narrow it down to a few top online casinos that are truly a cut above the rest – and we can then distinguish between them by what they each specifically offer and how they might be right for certain kinds of players.

We’ve done the extensive research for you. We’ve reviewed literally every active casino on the web and compared the findings, so we can tell you about the best online casinos out there. We’re pretty confident about our results, as these are the casinos that excel in every single area we mention on this page. These are all trusted online casinos that millions of players from all over the world play at every day, so you don’t just need to take our word for it. If you want to learn more about them, you can check out the reviews we’ve written for them.

As we’ve mentioned already, for a casino to hold its own among the very best, it really needs to be an A+ in every single category we mention here. That being said, if we have to rank the importance of these categories, we’d say that nothing can ever be as important as security. That covers licensing and regulation, safe cashouts and all the other security measures we list above.

Established casino sites have a massive games portfolio, so you’re spoilt for choice in terms of options. You can play any kind of slot machine you could think of, be it a classic slot with three reels or a bonus-filled jackpot game. You could also try your luck at blackjack, roulette, craps, baccarat, and video poker. Players looking for a more authentic casino experience can try to beat a human croupier in real time with live dealer games. Your options at the top casino sites are endless.

While we always strive to recommend you the best online casinos that payout fast, this entirely depends on the payment option that you use as a withdrawal method. On average, an online casino will take two to five business days to process your withdrawal request. If you use an eWallet like Skrill, your withdrawal will usually take one to three business days, while credit/debit card withdrawals can take up to six business days.

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