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The collection of Ra.Casino online casino games consists of the best slots to play from acknowledged software developers from all around the world. Feel free to try them right now on a smartphone or PC! On this page, you can find the most popular slot machines for any taste: Egypt, Sevens, Fruits, Oriental - we have them all! Play top casino games for real money or just try them in the free mode for FUN!

Best Online Slots: Types and Features

The gambling industry offers a wide selection of top slot games. Given the abundance of decent options, picking the very best one can be tricky. Software providers release dozens of games every month! That is why Ra.Casino has this Popular Casino Games section. It allows you to pick one of the most popular casino slot machines and try it right away. This is extremely convenient for avid gamblers!

Thanks to this page, you do not have to read reviews and look for the best slot machines to play. We have listed the most played titles enjoyed by thousands of players. These are the best online slot machines you will ever find! Ra Casino users play them since they offer outstanding graphics, high-quality sound effects, exciting gameplay, and generous bonuses. Our top slot games will definitely deliver you a ton of fun!

Types of Popular Slot Machines

All the top slot machine games presented on the Ra Casino website are made by trustworthy software providers and offer incredible gaming experience. There are many themes and types of slot machines to choose from: from old-fashioned fruit machines to modern 3D-slots. You are free to play great options of any kind on our gambling platform! Below, we have listed the best online slots categories preferred on Ra Casino. The majority of players adore these online casino games!

Video Slots

This category of the top casino games is the largest by the date. It includes literally 1000+ slots with different themes! Video slots are the most popular gambling games on the internet since the invention of online casinos. They come in different forms, but most of them have either 5 or 3 reels. People like such kind of game since they come with exciting bonus rounds, including free spins, wilds and scatters, and top-notch graphics.

We highly recommend you to try out our best slot games, such as:

The above-listed titles are among the most popular top slots available at Ra Casino. Given the fact that you can play them right now for free, why not just do it? We are 100% sure that you will be impressed by the quality of these slots machines! Just click any game you want and try it straight in the web browser with no registration and downloads. Either play on your smartphone or use a personal computer without any restrictions!

Progressive Slots

Games of this type come with enormous jackpots. Each slot in this category has a grand prize, which keeps getting bigger and bigger until someone wins it. Every registered user of Ra Casino has a chance to get life-changing amounts of money playing progressive jackpot slots! Obviously, you can also try them for free, but you will be missing a lot of fun then. After all, winning real money is always extremely exciting!

In terms of gameplay, progressive slots are no different to the standard ones: all you have to do is select your bet and spin the reels. The difference is that each software provider has its own way of distributing jackpots in their games: some may add 4 levels of progressive jackpots (for each suit of the card), some may add only one progressive jackpot with its sum shown on the top of the slot's screen, some may add only static jackpot, that is available for all players at the same time. 

The best video slots with progressive jackpots include unique bonuses to make the gameplay even more exciting: Mega Moolah by Microgaming, Hall of Gods by NetEnt, and Jackpot Giant by Playtech. If you like to play for real money, you should try Ra Casino’s popular jackpot slots!

High Payout Slots

The name of this category speaks for itself. It is devoted to the most lucrative slot machines presented on the online casino website. Do note that most of our games offer a high RTP (Return-To-Player). However, the slots from this section are especially profitable. These are top casino slots for both novice and experienced gamblers! You will win slightly more often in these games since they have a return to player rate above 95% and, in most cases, a low variance (volatility).

Here are the most popular slots with increased RTP percentage:

No matter what option you choose out of the top slot machine games listed in this category, you will notice an increase in your win rate. Obviously, high payout slots are great for real money players. Some users of Ra Casino only play them because they are striving to win as much money as they can. You can join them right now! Sign Up, make a deposit, pick an available bonus, and try your luck in high payouts games!

Reasons that Make Slot Machines Popular

As you might have guessed, people play popular slot games because they are fun. The best titles offer high-quality graphics, smooth animations, attractive music, and, last but not least, generous payouts. As a rule, the more popular the slot, the higher its RTP (which can be up to 98%!). Therefore, the most played games available at Ra Casino is extremely lucrative. Needless to say, all gamers like to win as often as it is possible.

Another thing the best online slots have in common are bonus games and features. Most of them are packed with exciting extra options! Popular slots come with cool bonus rounds that allow you to get a big win. Most games on this page offer free spins, wilds, and multipliers. However, some titles come with unique bonuses that change the playing field: for example, Book of Ra Deluxe 6 has 6 reels, and 243 Crystal Fruits has 243 ways to build winning combinations!

Bonus Features in Popular Casino Games

Bonuses in slots are very important, especially in new online slots. As was already mentioned above, the most popular games on internet casinos have amazing extra features. Thanks to them, you will not only enjoy more versatile gameplay but also win far more money. There are different types of features used by different software providers. However, most bonuses are similar, so you will easily get used to them.

Here are the bonus features found in top slot machine games on Ra Casino:

  • Free Spins. Almost every gambling studio offers them. You can activate them with specific symbols to spin the reels without wasting any real money. Most of the time providers offer free games in their slots with additional bonus features, like extra wilds or moving reels.
  • Wilds. Yet another must-have element in online slots. They not only serve as the highest-value symbols but also replace any other symbol on the playing field to help you build winning combos. In some games, wilds trigger bonus rounds or multiply the overall winnings. As a bonus feature, Wilds can be divided by the type: Expanding, Stacked, Sticky, etc. 
  • Scatters. Special symbols that trigger bonus features such as extra round or free spins, as well, as giving payouts even if they're not collected in straight payline. Unlike standard icons, they can appear on any reels, and mostly 3+ collected Scatters give a player pretty nice winning.
  • Gamble Features. Some of the best online slots have this feature for risky players. Gamble, or Risk round can be launched after every successful spin of the reels. There are different ways casino game providers adding Gamble rounds to their games, but most popular is "Guess-A-Suit-Color" mini-game. In it, the player must guess the color of a suit of the closed card: red or black. If you make the right choice, you will double your overall award. Otherwise, you will lose everything you have won.
  • Respins. This feature has something in common with free spins. In some popular online slot games, after each successful spin, reels can make an additional spin to form a new combination for no cost (as FS do, but only for 1 spin). This way players can win a huge amount of money by paying for a fewer amount of spins!
  • Multipliers. These are pretty straight forward - symbols that can give a player a multiplier to all wins while collected in a winning combination. Starting from x2, multipliers can significantly increase the player's bankroll, especially, if multipliers are being dropped in bonus games.
  • Bonus Games. The combination of all bonus features of the game presented in a single bonus round. For example, the Demi Gods slot by Spinomenal has a bonus game, where the player is on adventure in different locations with different additional extra features: Free Spins, Cascading Reels, Stacked Wilds, etc. Some games have a Pick-An-Item bonus game, where the player must pick an item from the screen which gives a payout.

As you can see, bonuses are very exciting. That is exactly why so many people enjoy games of chance with extra features. Pretty much all the popular slots come with bonuses nowadays. They are indeed very fun, so you should try playing them! However, those who prefer simple slot machines without bonuses can stick to retro fruit slots with three reels. Such kind of games does not have bonuses at all.

Top Online Slots Themes

The collection of Ra Casino consists of numerous popular slots with different themes. There are options for everyone! Enjoy the company of popular celebrities and meet your favorite movie characters in Movie slots, ride luxurious cars, and visit fantasy worlds in Fantasy slots. The possibilities are limitless!

The most popular slot machine themes are:

  • Ancient Egypt;
  • Fruits;
  • 777;
  • Vegas;
  • Oriental;
  • Pirates;
  • Adventures;
  • Irish etc.

Best Casino Games and Soft-Providers

There are dozens of game studious in the online gambling industry. However, some software providers are more popular than others are. Millions of avid gamblers from all over the world play their games! Of course, Ra Casino cooperates with the best of the best to offer you top-notch gaming experience. Let us take a look at the most popular software providers presented on our platform!


Microgaming is one of the veteran software developers. It has been creating digital slots since 1994. Nowadays, it offers over 900 amazing games. Try the best free slots from Microgaming on Ra Casino!

Here are the top slot machine games from this studio:

  • Mega Moolah;
  • Jurrasic Park;
  • Beautiful Bones.

All the modern Microgaming slots are fully adapted to mobiles, so you can have plenty of fun right now on any device. At least launch some games in the demo mode to find out why this brand is so popular!


Playtech is a huge slot developer that was founded in 1999. It offers high-quality software for online casinos, sports betting sites, poker rooms, scratch games, and more. The studio has many great games!  

Here are the all-time favorite games from Playtech fans:

  • Age of the Gods;
  • Big Bad Wolf;
  • Jackpot Giant.

Besides traditional slots, Playtech offers live casino games hosted by professional dealers. They are perfect for people who want to experience the real casino atmosphere in the comfort of their home!


This is among the largest live casino game providers. NetEnt has a top-notch selection of roulettes, poker, blackjack, and other games of chances with real croupiers. However, it offers slot machines too!

Here are the hottest NetEnt titles available online:

  • Twin Spin Deluxe;
  • Starburst;
  • Cash Noire.

This studio offers games of different volatility for any taste. You should be able to find a suitable slot easily! Since NetEnt makes new releases every month, there are more than enough options to try.

Play'n Go

Play'n Go is a trustworthy software provider that was founded in 2005. Even though it is not as old as the previous studious from our list, its games of chance are equally entertaining. Try them right now!

The most popular slots of 2020 from this studio are the following:

  • Cat Wilde and the Doom of Dead;
  • Leprechaun Goes Wild;
  • Charlie Chance in Hell to Pay.

Many gamblers like the company for high RTPs, generous bonus rounds, and impressive graphics. Lucrative and exciting Play'n Go slots are a wonderful choice for all kinds of gambling enthusiasts!

Big Time Gaming

This studio, also known as BTG, was created in 1996. Since then, it has released hundreds of high-quality games of chance. If you are not a novice gambler, you must have played many BGT slots already!

Here are some of the best games delivered by Big Time Gaming :

  • Royal Mint Megaways;
  • The Final Countdown;
  • Opal Fruits.

The company features both 3-reel and 5-reel slots with flexible betting limits. Additionally, it has a series of Megaways games with impressive jackpots. They are amazing for high rollers who are willing to risk!

Pragmatic Play        

Founded in 2007, it is a rather new software developer in comparison to the other ones on our list. Nevertheless, it is one of the leading studios in the online gambling industry.

Here are the most known slots developed by Pragmatic Play:

  • Glorious Rome;
  • Dwarven Gold;
  • Aladdin's Treasure.

Besides traditional slot machines, Pragmatic Play provides a broad range of live casino games. You can have a great time playing roulette, blackjack, and other table games with real dealers!

Play the Best Slots Online Free or for Real Money at Ra Casino

All titles listed in the casino’s library are available in the practice mode. It is a wonderful opportunity for novice players who are not ready to play for real money yet. If you have never played online before, feel free to practice on our website!

Nevertheless, playing for real money is many times more exciting. Sign up at Ra Casino to make a deposit and test your luck! We will give you a nice welcome bonus, so your bankroll is going to be high enough from the very beginning.

Top Mobile Slot Games Without Downloads!

Our online platform utilizes state-of-the-art technologies, so the website is perfectly suitable for any screen size. Feel free to enjoy your favorite slot machines anywhere and anytime you want! The game will automatically adapt to your display no matter what device or operating system you are using with the help of HTML5 technology.

The best thing about our mobile platform is that it does not require any additional apps. All you need to do in order to play is to open the Ra Casino website in your web browser. That is it! The online portal works perfectly smooth even on older portable devices, you will get excellent gaming experience.

Pick the Best Online Slot Just For You on Ra.Casino!

Enough talking, it is time to play! Hundreds of great slots await you in our collection. Given the flawless optimization, generous bonuses, round the clock customer support, and quick withdrawals, Ra Casino is hands down the best gambling website available on the internet. Register your account right now and play on PC or portable devices without any restrictions!

Best Slots FAQ

What are the best online slots to play?

We can name Mega Moolah, Book of Ra, and Gonzo's Quest. But Considering the huge number of titles from different software providers, picking a bunch of the best slots is impossible. It is all subjective, after all! Fortunately, every game on Ra Casino can be played in the demo mode. You can try any of them and pick the best online slots yourself!

Can I play top-rated slot games for FREE?

Yes, you can! As we have already mentioned earlier, our platform allows you to try almost any slot for FREE without Sign-Ups and downloads! If you are looking for the options with the highest rating, go to the Popular section and pick any slot machine you want. You will definitely enjoy it!

How to win real money in popular casino games?

Easiest way: Create an account at Ra Casino and make a deposit to play for real money. Register today to get a 100% Welcome Bonus, which will increase your bankroll and help you make higher bets! Do not hesitate to claim the deposit bonus if you are striving to win as much real money as you can.

Which slot machines pay the most?

Slots with the highest RTPs are the most lucrative. To discover the return to player rate of a specific machine, read user reviews online, or check the in-game rules yourself on the game pages. Most of the titles available on Ra Casino have a decent RTP of 95% and higher!.

What slots have the best odds?

5-reel slots with more than 40+ paylines usually have the best odds. If you prefer to play safely, choose low volatility games. Do not forget about the return to player rate either, as well as the volatility of the game. The higher the RTP the better.

What are the most popular slots of all time?

Visit the Popular Slot Games category of Ra Casino and check them out yourself! We have listed the most played titles in this section of the website. Since you can try all slots without paying any money, why not just do it right now instead of reading about them?

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Ra Casino - is a trusted online casino in Asia and Europe. Here you can find best slot games, live dealers (Live Casino), various types of card games (Poker, Blackjack, Baccarat) and table gambling games (including Sic Bo and Keno). As a licensed internet casino, Ra.Casino provides only licensed gambling soft from providers: NetEnt, Microgaming, Playtech, Quickspin, Habanero, and many others. Register now and enjoy our generous bonuses, tournaments and promotions, quick withdrawals and fair gameplay!

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