Top Online Casinos chart by Correct Casinos is a project that will help you with your first steps in online gambling. Play at the right casino, learn how to bet with lower risk and where to find awesome bonuses, free spins and wonderful gaming experience. If you want to share your good or bad experience us about playing at any online casino or slot – do not hesitate to contact us.

Best Online Casinos in 2021

United States online casinos
1Best Online Casinos

Welcome bonus

100% Up to £25 + 25 Bonus Spins


  • Fantastic game variety
  • Sensible wagering requirements
Greenplay Casino Review

18+ | New Players Only | T&C Apply

 United States online casinos

Players from United States accepted


18+ | New Players Only | T&C Apply

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Casino Software Providers

Casino Game/Slot Selection

The selection of games offered by a casino is perhaps the most crucial criteria in judging the quality of the casino. And a wide range of options does not suffice, the standard of the games is also vital. Right now in the UK perhaps the most popular and most played games are slots, roulette and blackjack. As such – these games should figure in every respectable online casino in order to satisfy the client’s needs. Another important thing to have in mind is the balance of games, besides variety. The popular games have several different variants and a good game selection should have more exciting options such as Pinball, Multi-wheel and 3D Roulette, besides the classic variants known to all. Overall, in our opinion the casino William Hill has the best game selection, encompassing all game types which assure that no client will be left unsatisfied.

How to choose online slot & casino to play?

We’ve prepared a short article for Best Slots to Clear Bonus Wagering Requirements that pays to be read.

Slots RTP

How Does the RTP for All the Games Compare?

An underestimated aspect of a casino is the Return to Player (RTP) which is often misunderstood as well. It shows how much of all bets placed for each game are paid back to players. The payout rate is calculated over long periods of time and many played hands and gives an overall average return to player. It’s important to note that the higher the RTP the lower the “house edge” and there are even some casinos like Betfair Casino that has no house edge whatsoever and the RTP reaches as much as 99.9 per cent for certain games.

The websites of casinos should have an RTP listed for every available game and there are also “payout reports” published from independent testing agencies such as eCOGRA and GLI which may differ from those the casino has chosen to put up. Online casinos usually have higher payout percentages than real-life casinos, because there are no limits or restrictions on the maximum amount that can legally be payed.

Too Much info? Something interesting now. Men vs Women at Online Casinos

Online Casino infographic men vs women

Casinos Security and licensing


Security and the safety of the clients funds is paramount in any business and online casino do not differ in this regard. Every casino providing services to players has to be licensed by the relevant authority – for example in the UK it is the UK Gambling Commission and in Malta it is the Malta Gaming Authority.

In order to ensure the integrity and fairness of the games played, legitimate online casino also utilize the services of testing angecies that run regular analysis of the random number generator (RNG) and the RTP mentioned above. Examples of such agencies are eCOGRA (E-Commerce and Online Gaming Regulation and Assurance), Technical Systems Testing (TST), Gaming Laboratories International (GLI) and Gaming Associates, all of which should be also approved by the relevant authorities. A credible online casino should have certificates from such testing agencies on their websites.

Casino Customer Support

Online Casino Customer Support

Customer Support, just like Security, carries weight in every business and it is especially important in online casinos as well. There should be many available options, including phone calls (preferebly free of charge), email, and perhaps the most prefered option – live chat. It is also a big advantage if the customer support is available 24/7 so that clients may be helped precisely at the time of their problem.

We must say that there is an overall good level of customer services and most casinos provide customer support around the clock. The usual waiting time for an email response is a day and has the fastest replies.

Recently reviewed and newest online casinos

Some of them might not be available for play yet or might not be the best choice. If you are looking for new, fresh & safe online casino to play at – find our chart of the best new casinos.

New slot games

Check our or selection of the hottest online slots. You can try most of them for Free or play for real money at legit & recommended online casinos. Have fun!

Casino Software Providers

Casino Software Providers

Many casinos used the same software providers and this leads to many casinos having close to identical websites. When it comes to software – a casino has to aim for a website that is user-friendly, easy to understand and easy to navigate. It also has to be stable and reliable, because among the most frustrating problems player encounter is games crashing in the middle of a hand. What we always pay attention to in our analysis is how easy it is to find information regarding bonus terms, deposit fees and payout rates. The graphics should also be slick with an inviting, attractive design.

Here is a list of our favourite online casinos software providers

Gamstop casinos Payment methods

Online Casino Payment options

Before you start playing you have to fund your account and the deposit should be straightforward and safe. We also value a variety of available payment methods, as well as whether there are any fees levied on deposits. This information should be accessible and detailed. There can also be withdrawal restrictions such as a minimum or maximum amount which aren’t favorable for players. The processing time is also very important because most players prefer to be able to quickly receive their money and as such – the withdrawal time is a crucial factor for an online casino.

There are many different payment methods, including e-wallets. Mansion Casino offers PayPal as an alternative to credit cards. It is important to note that since 2015 Ukash is no longer available, having been replaced by paysafecard.

Review our Casino Payment Methods Guide to get known about different options, taxes and deposit/withdraw timings.

online casinos information

More about online casinos?

Even though everything mentioned above suffices for judging casinos adequately, there are also other factors which cannot be put in any of the above-mentioned categories.
There are certain exciting features that a casino may have as a bonus. A good example is if a casino has won a reward for its services which acts as a nice guarantee for the quality of the casino in question. However, it is also worth pointing out that casinos may take advantage of this and flaunt fake awards on their websites. Legitimate rewards are only given by respectable organisations such as EGR Awards (eGaming Review), IGA (International Gaming Awards) and the Global Gaming.

casino bonuses

Casino bonuses and awards

Also – all sorts of promotions and bonuses directed towards newbie players should be seen as an advantage, as well as loyalty schemes and VIP programs for long-time clients.

The three most popular casino bonuses types are:

  • Welcome bonus
    Almost 99% of the online casinos are trying to get new players with a nice welcome bonus. It’s targeting players that register for first time in that online casino. It’s usually amount or percent of your first deposit bonus or/and free spins.
  • Free spins
    Which gives you certain amount of free spins for slots, increasing your chances to win.
  • Deposit bonuses
    This type of bonuses gives you back a certain percentage of your deposit, but always there is a maximum amount for this. Usually looks like “Get 50/100% of your deposit up to 200EUR/USD/GBP”

Casino of the month

Every month we issue our players’ favourite online casino.


Welcome bonus

Match Deposit Bonuses for Casino Players and Sports Bettors


  • Licensed and regulated
  • Casino and sportsbook available
FunBet Casino Review

18+ | New Players Only | T&C Apply

 United States online casinos

Players from United States accepted


18+ | New Players Only | T&C Apply

Casino FAQs

There are several main things you should consider before opening an account in online casino. Here are the most important:

  • Casino licensing. Check where the casino has been licensed, and if ti’s approved by your country’s gambling association.
  • Welcome bonus. Most of the online casinos are giving their new players amazing welcome bonuses. You should make sure you get one in exchange of your sign up.
  • Casino reviews on the internet. There are tons of reviews for all of the casino brands online. Check other customers opinion before playing and don’t forget to check our review, here at

Different casinos offer different deposit methods, depending on your location. Most popular are: credit card deposits (mainly Visa accepted), Skrill, Neteller, EcopayZ. You can also find alternative methods like paypal deposit, cryptocurrency (bitcoin mainly) and Sepa. We recommend using your credit/debit card as the safest method to deposit nowadays.

Usually up to 72 hours. There are very few casinos that allow customers to withdraw their winnings in less time, but actually there are some that payout in 3 hours (which is great). Pay attention to this detail and if it takes more than 72 hours to withdraw your winnings you should contact the customer support team of the casino. If you’re looking for a fast payout casinos, please check our payout time casino chart.

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About the author

Stan / Casino expert

Last updated: 8 October 2021