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Best Slot Casinos 2023

Our Slot Casino Test Winner: Bets.io

Our experts have chosen Bets.io as the winner of the best slot casinos. The selection is vast, with over 2,700 slot games provided by well-known manufacturers. In total, more than 50 software providers are on board.

The games can be tried out for free, and info about RTP or volatility can be accessed with one click. There are also a few categories, like best or new games and the option to filter by provider. This will help you find your way around.

7 Best Online Slot Machines

We at Kryptocasinos.com have already tried out many slot machines – after all, that's part of our job.

We'll show you our 7 favourites in the following sections and explain why they made it to our best list.

Since this is our experts’ selection, it is not 100% objective. Nevertheless, they also convince independently with attractive bonus rounds, high stakes, payout ratios and other special features.

These are the best online slots at a glance:

• Starburst by NetEnt
• Book of Dead by Play'n Go
• Megah Moolah by Microgaming
• Bonanza Megaways by Big Time Gaming
• Immortal Romance by Microgaming
• White Rabbit by Big Time Gaming
• Ramses Book by Gamomat

Starburst by NetEnt, RTP 96.1%

Starburst is one of the absolute all-time favourites among casino slots. The popular NetEnt slot has been bringing excitement to players since 2012 with an RTP of 96.1% and a maximum chance of winning 500x bet – with a maximum bet of €100, that is €50,000. The wildcard bonus system makes Starburst particularly attractive, as it increases the winning options.

Starburst has 5 reels, 3 rows and 10 paylines. Bets are possible between 10 cents and €100, thus making the slot suitable for most players. The slot looks futuristic with colourful gems graphics and galactic sound effects.

The game is easy to understand, thanks to the low volatility you win frequently and the features, such as Free Re-Spins or Expanding Wilds, make it especially entertaining. Many online casinos offer Starburst free spins as part of their welcome bonus.

The goal of the slot is to spin at least 3 identical symbols. Thanks to the Win Both Ways feature, you can get a winning combination from left to right and from right to left.

Book of Dead by Play'n GO, RTP 96.21%

Rich Wilde and the Book of Dead is another extremely popular slot that also comes with 10 paylines, 3 rows and 5 reels. Between €0.01 and €100 can be placed per spin. If you are really lucky, you can win a maximum of €500,000 in Book of Dead.

You win as soon as 3 of the same symbols appear on a payline. The Book of Dead symbol serves as both scatter and wild and offers especially high chances of winning. When 3 golden books appear on the reels, the free spins feature is triggered – one of the most popular features of the slot.

The slot with the theme of Egypt has high volatility, meaning you win less often, but the prizes are higher. Risk games also give you a chance to multiply a win.
Book of Dead is based on Novoline's classic Book of Ra, which is only available in selected online casinos due to legal regulations.

Mega Moolah by Microgaming, RTP 88.12%

Mega Moolah is one of the most famous jackpot slots. It was released by Microgaming in 2006. It has 5 rows, 3 reels and 25 paylines.

The slot with its safari theme is very entertaining and has a lot to offer thanks to bonus rounds, progressive jackpots, multipliers and free spins.

As the king of beasts, the lion has the greatest importance in this slot: it serves as a wild and multiplier. It can be used as a substitute for all symbols except the scatter, the monkey in Mega Moolah. Three scatter symbols trigger the free spins feature, bringing 15 free spins and a chance to win more.

The wheel of fortune serves as a bonus game. It appears randomly and is the ticket to one of the jackpots (there are four in total).

Although the RTP is below average at 88.12% – a prize worth millions is possible due to the progressive jackpot. And that with a bet of €0.01 to €6.25 per spin.

The average Mega Jackpot is around 4 million and shows up approximately every 9 weeks. Outside the jackpot, the maximum win is 11,250 x bet.

Bonanza Megaways by Big Time Gaming, RTP 96%

Bonanza is the gold digger slot set in the Wild West. It features 4 rows, 6 reels and up to 117,649 winning combinations thanks to the Megaways feature.

Between €0.20 and €500 can be wagered per spin, and with some luck, you can win 10,000 times your stake.

The dynamite symbol acts as a wild. The golden letters act as scatters. If the 4 scatter symbols G-O-L-D appear, the free spins mode is activated. There are 12 free spins and another 5 for each additional letter. The slot also has an Unlimited Win multiplier.

Megaways feature, cascading reels and an attractive free spins feature make this slot a real hit.

Immortal Romance by Microgaming, RTP 96.86%

With an RTP of 96.86%, Immortal Romance is above average. The fantasy slot with the vampires' theme features 5 reels, 3 rows and 243 paylines.

Bets can be placed between €0.30 and €30, and you can win 12,000 times your stake. With this high-variance slot, you can look forward to juicy wins.

Besides scatter and wild symbols, there are a total of 4 free spins modes and a Wild Desire Bonus, which is triggered randomly during the game.

White Rabbit by Big Time Gaming, RTP 97.72%

White Rabbit is all about Alice in Wonderland. The slot scores high with expanding reels, numerous winning opportunities and the popular Megaways feature.

The RTP of 97.72% is above average, and the slot's variance is high. You can win a maximum of 10,000 times your stake. Thanks to the extending reels feature, up to 75 free spins are possible. There are a few other exciting bonus games as well.

You can bet between €0.10 and €20 per spin. There are 248,832 winning combinations with free spins.

Ramses Book by Gamomat, RTP 96,15%

This slot is also set in Ancient Egypt and convinces with a whole range of bonus rounds. The book symbol serves as scatter and wild. At least 3 scatters activate 10 free spins. Gamomat slots are known for triggering very high hits in the free spins.

The slot has a gamble feature and additional bonus symbols that can be used to win outside the paylines.

You can bet between €0.10 and €100 per spin. The maximum win is €50,000.

Advantages of Slot Machines in Online Casinos

Online slot machines are convenient and straightforward, and the selection is vast. This good pastime is available to you 24/7. Your gaming experience lasts longer thanks to bonus offers and free spins. You can test games for free and even play slots wearing your pyjamas.

Disadvantages of Slot Games in Online Casinos

Are slot games in online casinos better than in land-based casinos? Not necessarily – it all depends on what is important to you and what you are in the mood for. When it comes to atmosphere and interaction with others, casino slots online can't compete. What are the other disadvantages?

Online Slots Software Providers

In addition to a diverse selection of online slots, there is also a whole range of software manufacturers. Some are known for their unique graphics, others for their fancy ideas. Some focus on live games, while others developed slot machines for classic casinos already 50 years ago.
Below, we'll introduce you to three great providers who keep attracting us with their slots.

Yggdrasil

The Swedish game developer has only been on the market since 2013 and is thus still relatively young. Nevertheless, it has already been able to make a name for itself in the industry and impresses, especially with its innovative games.

The quality is excellent. This is why Yggdrasil has already developed into one of the best manufacturers in its relatively short history. The provider has also won various awards, for example, Slot Provider of the Year 2017 at the EGR B2B awards.

Some of the top casino slots from Yggdrasil are:

• Jungle Books
• Vikings go Berzerk
• Orient Express

Thunderkick

Thunderkick was founded in 2012 with the goal of providing a better online casino gaming experience. This has been achieved: Its slots convince with above-average winning chances and completely new ideas and game concepts.

The software manufacturer takes a lot of time for the development of its games – quality clearly comes before quantity. There are only about 50 games, but they all impress with their innovative features and great graphics.

Some of the most popular Thunderkick slots are:

• Pink Elephants
• Tiger Rush
• Midas Golden Touch

iSoftBet

iSoftBet was founded in London in 2010 and now offers over 300 games. The developer is known for its branded slots based on TV series, movies or books.

iSoftBet is licensed in over 19 regulated casino markets and is responsible for the GAP software, through which online casinos can provide over 3,000 games from over 30 manufacturers.

Among the top slots are:

• Paranormal Activity
• Book of Immortals
• Majestic Megaways

Alternatives to Online Slot Machine Games

Slots are the classics in online casinos, but there are also several table games and other alternatives that are just as fun.

Feel like trying something different but don't know what to choose? We will introduce you to the most popular alternatives to slot games.

Roulette

Roulette is definitely one of the most popular gambling games ever. Players place their bets before the croupier throws the ball into the wheel. The goal is to bet on the right number, colour or combination.

There are quite a few different variants, so you certainly won’t get bored. In addition, many roulette strategies can be used to approach the game a little more strategically.

Blackjack

This popular card game is all about beating the dealer and getting as close as possible to the card value of 21 with two or more cards. You have a blackjack if you reach 21 points with the first 2 cards.

Numerous online variants of this classic game provide variety. Also, there are several blackjack strategies that you can learn and try. So if you don't want to rely on pure luck, blackjack might be a good alternative to slot games.

Poker

Another great alternative, if you want to rely on something other than luck, is poker. Here you can improve your chances with the right strategy – provided you're good at bluffing!

There are also video poker slots. Here you don't have to be a professional and know the rules in detail. Moreover, the RTP of these slots is usually very high.

Baccarat

Another card game is baccarat. It is considered one of the simplest casino games and is easy to understand.

Again, you are not playing against other players but against a dealer. You can make three main bets: a player’s hand, a banker’s hand or a tie. The hand with the highest score wins. In baccarat, this is the total score of nine.

The numbered cards correspond to their numerical value. Jack, queen and king are worth 0 points, an ace 1 point. As soon as you exceed 9 during the game, you start counting from 1 again.

Dice Games

There are dice alternatives if you don't like playing card games. They are especially suitable for players who don’t want to learn special rules or strategies. In the dice game, you usually bet on a certain number of dice – so you can get started easily and without experience. A popular dice game in a casino is craps.

Live Casino

If classic online casino games don't convince you, you should check out live casino. Real croupiers and real-time game playing create a different feeling.

Most virtual casinos also offer live versions of classic table games. In addition, there are exciting game shows and now even some live slots.

5 Principles of Online Slots

Play only in licensed casinos

The most important principle to be followed in all games is to play in licensed casinos. Only in this way can you be sure that providers abide by the rules, games are fair, and winnings are paid out.

Understand the game

Before you get started, be sure to understand the game. By this, we mean not only the machine itself but also the principles of slots in general. For example, find out what RTP and volatility are all about so you can choose the right slot machine and understand how it works.

Choose slots with a high RTP

The higher the payout ratio, the more deposited real money is paid back to the players. Make sure to choose slots with an RTP of over 96% to increase your chances of winning.

Try slots online for free

If you are not familiar with a slot yet, use a free demo version to test a machine with play money. This way, you can develop a feeling and see if it is really the right one for you.

Have you found the perfect slot? Then take advantage of bonuses and free spins to win without even depositing your own money. However, pay attention to the wagering requirements.

Keep in mind that this is gambling

Online slots are and remain gambling. Remember that winnings are not guaranteed, and even with the best tips and strategies, you won't necessarily win. Use online slot machines as a fun pastime, but never to make money.

Play responsibly, set a budget and stick to it. Many casinos also offer the possibility to control your gaming behaviour by setting different limits or a cool-down period.

Conclusion

Before reading this article, you probably already knew that online slot machines are great. But our experts' information may help you choose the right slot.

In our opinion, Bets.io is the best slots casino, with an incredible selection of almost 3,000 slots. The option to deposit with cryptocurrency is also available here.

The best online slots bring excitement with high jackpots, offer exciting gameplay and allow you to bet large sums. Our slot favourites include Starburst, Book of Dead and Mega Moolah.

Not convinced? Fortunately, the best slot casinos also offer other casino games – blackjack or roulette, for example. The casinos that offer the best slots are usually also excellent when it comes to table games.

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