Best German Casinos for Slot Machines: Online Slot Games in Germany

I have thoroughly examined and evaluated the top slot machine casinos, carefully selecting the crème de la crème for your perusal. On this page, you will discover the intricacies of my meticulous approach. I will divulge what constitutes the ultimate slot machines in my opinion and outline the essential features that must be present in top-notch slot casinos to secure a coveted spot atop my rankings.

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Ever since the implementation of the new gambling law in Germany, the significance of slot machines has escalated to unprecedented levels. This can be attributed to the fact that online slots have emerged as the sole casino games available in online casinos. Consequently, it would be more appropriate to refer to them as online slot machine casinos or, as an increasing number of providers now do, online gambling dens or arcades.

Unfortunately, I cannot change the law, but I can ensure that you only play at the top slot machine casinos in Germany. Allow me to demonstrate how I discover the finest slot machines and how I locate an online casino packed with games of this caliber. Let's dive right into the criteria for the greatest slot machine casinos.

Criteria for the best slot casinos

Of course, everything starts here with a valid gambling license, but then comes the selection of games, the payout rates, the bonus offers, payment methods, and customer service. Let's take a detailed look at these important points in order. In the next chapter, we will delve separately and extensively into online slot machines. The criteria are very similar to those for the best online casinos, so I will only briefly mention them in overview at the beginning.

Game selection

The most crucial factor contributing to an enjoyable gaming experience at an online casino is undeniably a diverse selection of games. Top-notch online slot games are known for their wide range of themes, offering an abundance of creative ideas that can be likened to grains of sand on a beach. Let's take a look at just a few examples:

  • Fairy tale
  • Crime
  • wizard
  • Ritter
  • Vikings
  • fruit
  • Vampire
  • Superheroes
  • and many, many more...

A wide variety of betting options is crucial when it comes to an exceptional selection of games. It is essential to cater to players with different budget sizes, offering suitable options for both those on a tight budget and high rollers. Additionally, it is important to prioritize diversity among software providers for online slot machines.

Every company has its own unique style. Experienced players can often recognize video slot games by popular providers such as Play'n GO, Spinomenal, or Nolimit City at a glance or with just a click. However, the various bonus features and winning opportunities in online slot machines are equally important. Let's now turn our attention to these payout percentages.

Payout rates

Return to Player (RTP) is the term used to indicate the payout percentages of online slot machines. It carries with it the hint of significance, as it pertains to the average percentage of money that a player can expect to win back over an extended period of time.

In an ideal scenario, independent testing laboratories such as eCOGRA or BMM Testlabs determine this percentage through extensive testing sessions. Ideally, these payout percentages are then published on the casino's website. Typical video slots have an RTP range of 90 – 99%. The best online slot games boast the highest payout percentages of 99% RTP.

Slot developer RTP
Bugga Bugga Playtech 99,07%
Mega Joker NetEnt 99%
Book of 99 Relax Gaming 99%
The extraordinary book of Seth Xtreme! Spinmatic 99%
Thrones of Persia Tom Horn Gaming 98,83%

Most often, online casino jackpot slots have a significantly lower RTP. This is because a small portion of every bet placed on these online casino slots goes towards the jackpot, thereby greatly dampening the payout percentage. Although online slot games like Mega Moolah or Mega Fortune do offer multi-million jackpots to a fortunate few winners, the RTP value in the base game is generally around 88% or even lower.

License & Security

To me, the license is always a decisive factor. Without an EU license, an online casino has no chance of being tested for Germany at all. However, the German license is most important to me. It is, of course, also an EU license, which is why my initial statement still holds true.

The German license does come with a few restrictions compared to another EU license due to the new legislation. However, in the end, this has an immensely positive impact on security. With the new State Treaty on Gambling, so many security systems have been implemented that you can practically play completely safely in slot casinos from our ranking today.

Although a little luck is still necessary to win, you can at least rely on fair and completely random outcomes when playing these real money slot machines. In addition, the new registration process, the monthly limit of €1,000, the maximum bet of €1 per spin, and the voluntary limits within your gaming account, along with the panic button, all ensure the utmost level of security. Rest assured that your safety is our top priority.

Bonus for existing and new customers.

When evaluating online casinos, I always take a look at the bonus offers as well. The fun starts in online casinos with the welcome bonus, which should naturally include a few free spins for the best online casino slots. Additionally, I also examine the bonus conditions because they can ruin even the best bonus.

Following the welcome bonus, it is essential to have ongoing reload bonus offers. It would also be desirable to have a loyalty program that involves collecting loyalty points. The ideal scenario would be to have multiple levels with increasingly better rewards. At your convenience, you can exchange your loyalty points for bonus money to use on real money slots.

When it comes to the offer of bonuses, it's all about finding the right combination. Sometimes, a great cashback bonus can compensate for the absence of a VIP bonus, although having both bonus types simultaneously would be ideal for players. However, in order for you to make the most of a good reload bonus, there also needs to be optimal payment providers available.

Payment methods

When it comes to offering a variety of payment methods for German players, reputable online casinos must ensure they meet certain criteria. Players are understandably selective when it comes to entrusting their hard-earned money to shady payment providers. With that in mind, I have compiled a brief list of the payment methods I personally desire in top-rated online casinos for slot machine enthusiasts.

  • Credit cards such as Visa and Mastercard.
  • Digital wallets such as Skrill, Neteller, and ecoPayz.
  • Real-time transfers by Klarna, Giropay, and Rapid Transfer.
  • Prepaid cards from paysafecard, Neosurf, or CashtoCode.

Among the accepted payment methods are also favorable limits. The minimum amount for a deposit or withdrawal should be set at €10 or lower. As for the maximum amount, I would prefer it to be as high as possible. Ideally, players would not have to worry about any maximum limit. Lastly, it is worth noting that fees for deposits or withdrawals should soon become a thing of the past. We players already leave enough money behind. Demanding additional funds for deposits or cashing out winnings is, in my opinion, an outrageous practice.

Credit cards as payment methods in slot machine casinos

Reputable online casinos, by the way, carry out the verification process, wherein you are required to upload various documents such as a photo ID, a utility bill, and a bank statement or credit card bill. If this is not necessary, it appears that the provider is not subject to any regulation. This should immediately raise suspicions for you.

Customer service

Ideally, customer service should be readily available via live chat, operating 24/7 as commonly referred to. The live chat feature is typically located in a speech bubble symbol on both the desktop and mobile versions of the website. However, an online casino's support should not be limited to just that.

It would be ideal to have an email address for the convenient transmission of documents for verification or screenshots of any issues encountered. Nonetheless, this can also be effectively accomplished through a dedicated contact form. The contact form should include a feature for attaching files as well. Moreover, a contact form proves useful when one is actively gaming on a computer where sending private emails is prohibited, such as in a hotel lobby, on a public PC, or naturally, in the office during work hours.

A comprehensive customer support includes various aspects in my view. Availability should be taken for granted, needless to say. However, the provision of helpful assistance pages is equally crucial. Firstly, it enables customers to find many answers on their own, thus reducing the need to frequently contact support. Secondly, it decreases the frequency of reaching out to the support team.

Let's finally turn our attention to the online slots themselves. It's always useful for my tests and also for casino players to have a proper list of all bonus offers, the VIP club, as well as payment options including limits and fees. Moreover, I find it practical to have extensive FAQs, proper terms and conditions, namely general business terms, bonus conditions, and privacy policies.

Playing slot machines with real money or for free.

You can play almost all online casino slot games with either real money or for free. Only a few online slots with jackpots do not offer this option. However, there is currently a shift in thinking among providers in this regard. In the past, practically no online slot machines with progressive jackpots could be played for free. Nowadays, there are more and more progressive jackpot slots that you can also play for free. But let's take a closer look at both variations now.

Real money slot machines

If you are playing online slots with real money, there are several indicators that can help you determine that. Because sometimes there is a risk of confusing it with the free play mode. The safest sign that you are playing real money slot machines with your actual money is the display of your balance.

Typically, you are aware of your current account balance. If not, check the top right corner of your online casino's website before opening an online slot machine. Your current real money balance will be displayed there. If the same balance is also shown in the online slot machine after opening it, then you are now playing with real money. The advantage of this is the increased excitement and the opportunity to cash out your winnings.

Free slot demos

Trying out an online slot machine in demo mode isn't always a bad idea. Before playing, I always take a quick look at the paytable, which shows all the winning features. Sometimes, there's a bonus function that I don't fully grasp. In those cases, I begin playing the online slot machine in demo mode with fake money.

Ideally, a bonus purchase feature would be available. In that case, I would immediately acquire the particular feature using play money. Interestingly, this is the only occasion where I utilize the bonus purchase function. I haven't had any positive experiences with real money so far. However, with play money, I can quickly test out a winning function.

However, I must say at this point that I do not particularly appreciate the free demo mode. Firstly, I don't feel the same thrilling excitement as when playing with real money. Secondly, you have to consider that you cannot cash out any winnings while playing in demo mode.

At first glance, this may seem entirely logical - when playing with play money, one cannot request a payout. However, once you accidentally hit the jackpot in demo mode, you'll wish it were different. In that moment, you'll likely never want to play online slot machines for free again.

Imagine this scenario: you hit the jackpot on Play'n GO's Rich Wilde and the Book of Dead slot, winning the maximum amount of €250,000, which is a rarity in itself. But here's the twist - you were playing in demo mode instead of using real money. That would undoubtedly leave you feeling frustrated.

Types of slot machines

When it comes to online casinos, a wide range of real money slots is crucial. Players always seek a diverse selection of online slots to keep their gaming experience exciting and fresh. It's essential to have various types of slots to choose from, as no one wants to play the same slot machine indefinitely. Personally, I enjoy playing a well-designed three-reel slot classic.

Right after that, I indulge in a slot machine with an endless number of reels or in video slots that resemble a video game. To give you an idea of what there is to discover, I will explain in detail the four main types of online slot games and give a few excellent examples for each. These are not the only or best ones, but definitely the online slots that I like the most.

Classic slot machines with three reels.

The origin of the slot machines dates back to the olden times, characterized by three reels and a single payline. This vintage era of gambling holds a special place in the hearts of countless casino enthusiasts, who continue to indulge in the charm of the retro slots. Surprisingly, despite the evolution of online slots with an endless number of reels, the three-reel machines have managed to withstand the test of time and have not faded into oblivion. What captivates the most is the fact that the realm of internet gaming now produces slot games with an infinite array of reels, yet the three-reel machines continue to thrive.

Slot machine with 3 reels

Contrary to popular belief, the online gambling industry continues to introduce fresh three-reel slot machines to the market. Far from being dull and unexciting, these particular online slots with three reels offer an exhilarating gaming experience. Delve into the following selection of three-reel online slots and prepare to be captivated by their charm and entertainment value.

  • Mega Joker by NetEnt: This slot machine was released in 2013, so it's not a truly historic machine. However, it digitally represents an ancient, mechanical slot machine that used to be found in corner pubs. Despite that, the game is far from boring, and its astonishingly high payout rate of 99% RTP adds to its appeal.
  • Fire Joker by Play'n GO is a contemporary slot machine with three reels from 2016. The game became so popular that it received three successful sequels, namely Ice Joker, Inferno Joker, and Fire Joker Freeze. Exciting win features like a wheel of fortune and fire and ice spins bring lots of action to the three reels with five paylines.
  • Jackpot 6000 by NetEnt is another digitized slot machine similar to Mega Joker, yet it offers a few other entertaining winning features.

New slots with additional reels and paylines.

Most casino players are naturally drawn to modern online slots. The prevailing design of these slots typically features five reels. These reels typically display between 3 to 6 symbols each. For instance, popular titles like Greentube's Book of Ra or Quickspin's Big Bad Wolf adhere to this format. Book of Ra is a quintessential book-themed slot, much like Book of Dead, with the book symbol serving as both the scatter and wild symbol simultaneously.

NetEnt has introduced a fresh type of reel with their online slot game, Gonzo's Quest. In the Gonzo's Quest slot, instead of spinning on reels, stones cascade down. If a winning combination is formed, it dissolves, and new stones fill the resulting gaps. It's a revolutionary twist that adds excitement to the gameplay and offers players a unique experience unlike any other slot game. Get ready to embark on an adventure with Gonzo and uncover treasure in this immersive and innovative slot game.

In the Gods of Gold Infinireels slot by NetEnt, a new feature has been introduced. Now, a slot machine can expand and theoretically have an infinite number of reels. Also popular are slots with varying reel heights, as seen in Valley of the Gods Parts 1 and 2 by Yggdrasil. Thanks to digitization, there are now countless variations of slot machines, ranging from a single-symbol reel to an infinite number of reels.

Video slots

Opinions differ when it comes to the term video slots. Some individuals simply refer to it as all digitized slots found on the internet. Originally, this designation was used for the initial slot machines in local arcades, which, in contrast to the mechanical devices, had a screen displaying reels.

NetEnt's Street Fighter II faithfully emulates Capcom's popular video game of the same name, which enjoyed widespread success across various platforms, including Commodore 64, Super Nintendo, and Playstation. NetEnt's slot game allows players to select their fighters and engage in exhilarating boxing matches set in diverse locations around the world.

Jackpot Slots

Almost every casino player is thrilled by jackpots. Who wouldn't be drawn to massive sums of winnings? Progressive slots like Mega Moolah or Mega Fortune even offer jackpots in the millions. In this case, a small portion of every bet goes into the jackpot. Furthermore, the jackpot is accumulated in every slot casino featuring this real money machine. As a result, these enormous winnings come to life.

Players don't mind in the hope of millions that the return to player is slightly lower. You can win another well-known jackpot in Playtech's Age of the Gods series. But fixed jackpot slots are also fun and popular to play. The jackpot is either set as a fixed amount or as a specific multiple of the bet. In NetEnt's Divine Fortune, there are even both types of jackpots. The minor and major jackpots are multiples of the bet. The mega jackpot is a progressive jackpot that can rise to any height.

Overview of game developers

Germany has its own game developers, so you can also play domestic casino games from Bally Wulff or Gamomat in the online slot machine casino. Bally Wulff, established in 1950, is one of the oldest gambling providers in the market. Additionally, Blueprint and Merkur Gaming from the Gauselmann Group are online casino providers from Germany. If you're looking for a local gaming experience, these German companies offer exciting options.

Many players also consider Book of Ra by Novoline to be a German game developer. However, they are part of Novomatic from Austria, where Rabcat with Castle Builder or Forsaken Kingdom also originate. The following software providers have the best online casino slot machines available for you:

  • Microgaming
  • Play’n GO
  • NetEnt
  • Yggdrasil
  • Quickspin
  • Big Time Gaming
  • Playtech
  • Betsoft
  • Spinomenal

Mobile slot machine apps and websites

I dare to assert that every slot game in German online casinos is also perfectly playable on mobile devices. Whether it's Eye of Horus by Blueprint from Germany or Vikings Go Berzerk by Yggdrasil, these slot games can be played on any mobile browser or casino app, thanks to advanced programming techniques.

Slot machines casino on a smartphone

Currently in Europe, I am not aware of any casino slot machine where this is not the case. Similarly, you can access any slot casino on any mobile browser like Safari, Chrome, Firefox, Opera, or others. The slot casino no longer needs to program significant adjustments for this, as responsive design automatically adapts the websites to any screen size. This also applies to mobile slots.

Ideally, mobile slots come with slightly modified controls, as is often the case with Pragmatic Play, making them easier to navigate with your fingertips. Other than that, there are just a few practical things to keep in mind when playing slot games on your mobile device:

  • Fully charge your smartphone or tablet before playing games on the go, so that the slot games don't go black and turn off in the middle of the game.
  • Before starting the game, ensure that you have a stable mobile internet connection through either Wi-Fi or the mobile network. It can be frustrating to experience a game interruption due to an unstable internet connection.
  • For smaller smartphones, it's better to play games in landscape mode so that the graphics can be fully appreciated.
  • Most of the time, the mobile gaming experience is enhanced with headphones as the sound effects have a much greater impact.

Slot machine terms explained

For those who are new to playing slot games and lack experience, it is highly recommended to carefully review the following list of common terms used in slot machine games. These terms frequently appear in slot machines, so it is crucial for you to familiarize yourself with them. Take the time to understand their meaning and significance in order to enhance your overall gaming experience.

Expanding symbols

These symbols are best known from the classic Book of Dead slot by Play'n GO or Book of Ra by Novoline. During the free spins, a random symbol is selected and expands to cover the entire reel for the duration of the free spins, potentially leading to high additional winnings in the video slot. In cluster pay slots, these symbols can also spread within a specific area of the game field, increasing the payout rate.

Free spins

Free spins are no longer considered special. The best online slot games should be a given. It all starts with a fixed 10 free spins, like in the Book of Dead slot. In these free spins, you can activate even more free spins. In several slots, such as Immortal Romance by game developer Microgaming, there are even four types of free spins to choose from. Microgaming utilizes this feature not only in the Immortal Romance slot, but also in the famous Thunderstruck II slot, among others. Usually, you have the option to choose between functions with higher payout rates and fewer free spins, or many free spins with lower chances of winning.


As previously mentioned, the history of slot machines began with a single payline. Nowadays, slots come with various numbers of paylines. Sizzling Hot Deluxe by Novoline or the aforementioned video slot Fire Joker, for instance, have only five paylines. At the same time, there are also slots that feature hundreds of paylines in the gameplay. The pinnacle of this innovation is the Megaways, which were invented by Big Time Gaming. With just five reels, it's possible to incorporate hundreds of ways to win. The crucial factor is that the symbols align from left to right on adjacent reels. The position on the reel doesn't matter. In the White Rabbit slot, for example, you can win up to 248,832 Megaways. In the so-called Cluster Pays mechanism, the only requirement is for identical symbols to appear on adjacent positions. In some slots, there are no paylines whatsoever. The only thing that matters is the number of identical symbols on the game field. The exact position is no longer relevant.


Multipliers were incorporated into slots early on as additional opportunities for winning, leading to high payout percentages. Players who prefer low stakes are especially delighted by multipliers. In slots from provider Pragmatic Play, such as Great Rhino Megaways, the free spins often feature continuously increasing multipliers. However, slots also utilize wild symbols with multipliers.

Scatter Symbole

A winning combination can be triggered by a scatter symbol, which does not need to appear in an exact position but rather in a specific number. Scatter symbol, when translated literally, means dispersing symbol. Typically, three scatter symbols activate the free spins in the majority of online slots. However, in certain retro slots like Novoline's Sizzling Hot Deluxe, a single win is triggered.


The frequency of winning is indicated by volatility, in addition to the RTP value, which is another measure of the chances of winning. While the RTP or Return to Player tells you how much percentage of your bet an online slot pays back to the player on average, volatility reveals how often you win. This has nothing to do with the payout rate in principle. However, it is crucial for the right strategy and selection of the bet amount. With high volatility, the wins occur rarely, but tend to be higher. Low volatility means that payouts occur frequently, but the wins are relatively smaller on average. Therefore, the strategy is to choose your bet wisely for high volatility, so that you can withstand many spins until the next wins are triggered.


The phrase originated from the ancient mechanical slot machines, where a reel actually spun inside the device. Nowadays, these are merely simulated digitally on the screen. While it all started with three reels, the most common slot machines nowadays feature five reels. Thanks to advanced 3D graphics, these reels can vary in height as well. In some games, the bonus round even expands the playing field by adding additional reels. With modern graphics, game developers have limitless possibilities to create unique playing fields.

Wild symbols

Originally, the term "Joker" was used to refer to wild symbols. These symbols can replace any other symbol in the slot game. It works just like in a card game. If you have three identical symbols and a wild symbol on a payline, you will receive payouts for four identical symbols. However, there are now incredibly many bonus features with wild symbols. A wild symbol can have a multiplier. But it can also wander across the game field over multiple spins, triggering new wins repeatedly. There are also sticky wilds that remain fixed in position for several spins. Expanding wilds can ideally occupy the entire reel, resulting in even more wins. Sometimes, a wild symbol appears as an entire wild reel for even more payouts.

Tips for Slot Machine Casinos

Rather than offering a few eloquent words as a conclusion, I would prefer to provide you with some practical tips that will undoubtedly increase your chances of payouts, regardless of the payout ratio. Playing with real money is a balancing act of odds, where you must seize your statistically best opportunity. It then becomes a matter of stopping at the right moment and cashing in your winnings. If you haven't gained much experience with real money games in online casinos, you should follow these tips particularly closely:

  • Get the highest possible bonus when making your deposit. Normally, you won't find a higher bonus than the welcome bonus in online casinos.
  • At the beginning, playing mainly in games with a high payout rate, also known as RTP.
  • In games with high volatility, divide your bet in such a way that you can play at least 500 spins. For low volatility, it should be at least 100 rounds of play.
  • Set a limit for both winnings and losses in all slot games that you follow without emotions, even if the game is going well. If you have no experience, just take 20%. As soon as you have lost or won 20% in a slot game, simply stop and look for other slot games with a high payout ratio to continue playing.

frequently asked Questions

How do I identify trustworthy and legitimate slot machine casinos?

Reputable and lawful online slot casinos always possess a gambling license. We consistently suggest German players to exclusively consider casino sites with a German license. Of course, there are other trustworthy licenses available as well. Nevertheless, for Germans, the local licenses remain the most secure. It is imperative for you to take advantage of this opportunity. In addition, you will find outstanding games with a high payout rate and bonus features such as free spins.

Which slot games are the best?

In essence, the most enjoyable slot games are always the ones that appeal to you the most. If they also have a high payout rate and exciting bonus features, then you have found your optimal slot game. It all depends on your taste and which slot machines entertain you the best while consistently delivering wins.

Which slot machines pay out the most?

The prime slots feature a lofty RTP, even though you can amass considerable funds in games with a lower RTP. However, in order to achieve that, you would require significantly more luck. Games with an RTP ranging from 98% to 100% are classified as the most lucrative. Among them is the renowned Book of 99 by the esteemed provider Relax Gaming, boasting an impressive 99% RTP.

What is the best slot machine app?

In our list of recommendations, you will always find the providers with the best slot machine apps at the top. We have thoroughly examined and evaluated all providers. From the games to the bonuses and deposit options, everything has been meticulously tested. Most game providers offer an Android app that can be downloaded directly from their website. Rest assured that our rankings are based on a comprehensive analysis to ensure your gaming experience is top-notch.

What types of slot machines are available?

There are countless thousands of diverse slot machines from hundreds of software providers. All imaginable themes, bonus features, and free spins are available. The assortment of various slot games is truly almost limitless. Therefore, if you still don't know what you want to play, just stick to the recommendations above.

What is the maximum amount you can win on slot machines?

In progressive jackpot slot games, it is indeed possible to win millions of euros. The Mega Moolah slot developed by Microgaming and the Mega Fortune slot created by NetEnt have both awarded individual jackpots exceeding 17 million euros on multiple occasions. However, even in non-jackpot slot games, winnings of up to 500,000 euros are not uncommon.