Best bonus slot machine games you can play online

If you like slot machines that come packed with bonus features then you are certainly in the right place. Today we will be looking at what we consider to be the best bonus slot machine games available on the web. 

Bonus slot machines can seem quite intimidating because of all their added features, but once you get a grasp of them they can prove to be some of the most entertaining games out there. Read on to find out our top picks which range from branded slot adaptations to entirely original concepts, so let's get right into it!

What Constitutes the Best Bonus Slots?

When we were picking out our favourite titles, there were several criteria by which we measured each game. The first was how fun and engaging they really are – after all, this is the main purpose of bonus features. Another important aspect is volatility, since higher risk titles usually feature bigger prizes to balance out their erratic results. Finally, any additional perks, such as huge potential jackpots or mobile compatibility, gave certain games an extra edge. 

Guns N’ Roses

Our first pick comes in the form of NetEnt's homage to one of the greatest rock bands of all time – . Even if you're not a fan of Appetite for Destruction, you have to admit that this is a superbly polished product. With superb visual effects, fantastic soundtrack pieces played at just the right moments, and a plethora of interesting bonus features, this title has everything you could want from an entertainment product. In terms of gameplay mechanics, this is a typical NetEnt production, meaning that it offers 5 reels and 20 paylines, alongside a number of interesting bonuses. There are three different wheel features called Crowd-Pick, Encore free spins and the Appetite for Destruction win multiplier. Additionally, there are wild overlay features trigger during the Leg Tap bonus game, which is activated by landing three record symbol scatter anywhere on the first three reels, while the fourth special feature is the band members mystery bonus. This is triggered by three roadie symbols appearing anywhere on reels 3, 4 and 5. As you can see, there are plenty of opportunities to score big here, while the maximum possible win you can get a hold of is up to x750. When compared to other rock music themed , this one definitely takes the cake thanks to its high RTP of 96.98% and medium volatility. It is also available to play on both desktop and mobile devices, including smartphones and tablets running on iOS and Android.

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Cleopatra

Another one of IGT’s hugely successful slot machines, , has proven itself to be a force to be reckoned with ever since its release in 2010. Unlike the Rock album adapted slot machine we just talked about, this one doesn’t rely on a licenced theme to draw players in. Instead, it leans on a tried and tested historical setting, which has worked for countless films and literary works through the centuries. In any case, this is another 5 reel 20 payline title that offers a lot more than meets the eye. One of the things that make this game standout is the fact that it has a high RTP rate of 95.1%, which guarantees players decent returns over the long term. Furthermore, Cleopatra boasts leveled multiplier Sphere Bonus, as well as an additional Free Spins bonus round. Another great thing about this game is its accessibility, because not only can it be played on personal computers, but also on mobile platforms such as iOS and Android. Moreover, its maximum bet limit will surely please high rollers, as it allows users to wager up to $200 per spin. All things considered, Cleopatra might be showing its age visually, but it remains one of the best Egyptian themed slot machines you can play today.

Mega Moolah

If you are interested in playing the best bonus slot machines which offer massive jackpot payouts, look no further than Microgaming’s iconic title – . Since its launch back in 2006, this African animal themed slot has made countless people instant millionaires, which is why it remains a player favourite to this very day. This is a relatively simple game, because it only has 5 reels and 25 paylines. However, its real claim to fame is the random progressive jackpot bonus round known as the Bonus Wheel which can trigger at any moment during any bet. What makes this game truly stand out among other prize drop slot machines is its hefty payouts, which regularly reach millions of dollars. In addition to the jackpot feature, Mega Moolah also offers monkey wilds and Scatter pays, which can boost your balance considerably. An interesting characteristic of this game is its low minimum bet of $0.01 which makes it accessible even to players with the smallest budgets. However, you need to max bet $6.25 to qualify for the entire jackpot amount. Even though this title looks pretty dated when compared to modern products, it remains one of the biggest draws at online casinos, and we don’t see that changing any time soon.

Wolf Run

There is no denying that animal themed slot machines are having a moment, so why not check out one of the highest quality productions on the market - Wolf Run. Similar to Kitty Glitter, this title was produced by IGT and has been a major hit with North American gamblers. Just like the previous entry on our list, this game focuses heavily on a random progressive jackpot which can award staggering amounts of cash, regularly going north of half a million dollars. The base game itself is fairly standard, offering 5 reels and 40 paylines, with line bets ranging from 1c-50$. In order to activate the stampede bonus, you need to land 3 diamond bonus symbols anywhere on the reels. Aside from the jackpot feature and free spins mode, Wolf Run also boasts howling wolf wild symbols which count as substitutes for all other icons except the bonus scatter. When it comes to thematics, you will be immersed in the natural environment of a North American forest teeming with wolves, which is guaranteed to give you a sense of tranquillity and peace. So if you would like to experience this title on a variety of platforms, make sure to check our list of the , which include only verified operators.

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Jack hammer II

NetEnt have done it again with their follow up to the massively popular retro themed slot Jack Hammer. Boasting improved graphics and smoother gameplay, represents the peak of the Norwegian gaming giant’s powers. Even the storyline has received an upgrade, allowing for more dynamic comic book style cutaways between spins. Apart from the stellar visual effects, this game offers a few new and interesting bonus rounds. First of all there is the sticky win feature which adds to the thrills during free spins. Then there are wild symbols which count as substitutes for all other icons aside from free spin and bonus scatter symbols. Collect 5 free spin Sticky Win symbol on any reposition and Free Spin Re-Spins will be activated. Also, land 3 or more Free Spin scatter symbols on reels 1, 3 and 5 to activate Free Spins Free spin wins are based on total bet and the number of free spins is stacked to the left of the screen before the free spins commutate. As for the Mobile version, expect slick touch driven gameplay, convenient interface and smooth animations. The maximum bet limit is set to $200 which should be enough even for the biggest high rollers out there. When it comes to compatibility, Jack Hammer II can be run on all modern iOS and Android devices, giving fans on the go a chance to enjoy it as well.

Day of the Dead

Latin America is a rich source of inspiration for artists all around the world, and software development companies are no exception to this rule. is a prime example of how beautiful and exciting a slot machine themed after Mexican Dia de los Muertos holiday can be. From the very start you will notice that this is no ordinary slot machine, due in part to the unique 5 reel 30 win ways layout. Another novelty is the fact that there are no actual win lines, meaning that as long as adjacent symbols are next to each other (regardless of vertical lines) you will receive a payout. When it comes to bonuses, this game comes packing a full arsenal consisting of free spins, scatter pays, WILD and 5x WILD symbols, along with a special collect a bonus. To trigger the free spins feature, you need to hit 3 or more STACKED HEART BROKEN SKULL ONLY ON REELS 1, 2 and 3. If you manage to land 3 or more of the game logo scatter symbols anywhere on the reels in any position, you will activate the WILD Reels Bonus. During this feature, Stephen Marley's Three Little Birds starts playing and a series of full reel wilds will be dropped in starting from reel 1 with each spin. Lastly, getting 5 or more of the golden coin symbols will bring up a collect benefit, where the value of all coins is added and rewarded. With a vibrant colour palette and excellent sound design, this is one of the most enjoyable games on the market today. Its high RTP rate of 96.21% attests to its fairness and quality, so feel free to try it out at any of the recommended online casinos.

Lights

Asian culture has always proved to be a rich source of inspiration for various forms of art, which includes video slot machines. is a perfect example of how these two mediums can mesh together. When you first open this game you will immediately notice the serene imagery and calming music score which helps you relax and get lost in the action. Gameplay wise, this is a straightforward affair, featuring 5 reels and 9 paylines. When it comes to bonuses, Lights offers wild symbols which substitute for all other symbols on a winning line, along with Scatter symbols which offer a separate prize and also scatter to count toward winning. Furthermore, there is a special Free Spins Bonus which gets activated by getting 3 or more Yin & Yang Bonus symbols anywhere on the reels. Players' free spin prizes are doubled by the 2x free spin multiplier. The maximum bet limit found in this game is $9, which will disappoint high rollers who prefer placing larger wagers. However, casual gamblers will find it perfectly suited to their needs. This game looks great on a variety of platforms, so if you like what you have read so far, make sure to visit our list of the to get started with some great welcome bonuses.

Lucky Leprechaun

Irvine Productions may not be a household name in the iGaming industry like NetEnt and IGT, however their does not suffer in quality because of it. On the contrary, this game stands proud next to other big names, holding its own thanks to its original concept. The visuals here lean towards a hand drawn cartoon aesthetic, which gives off a warm and welcoming vibe. Add to that a lively Irish jig playing in the background and you get a sense of humour and lightheartedness rarely seen in other productions. Now let's take a look at some of the bonuses which can spice up the action. First off there are wild symbols which act as substitutes for all other symbols aside from scatters, multipliers and special symbols. Secondly, there are scattered Gold Coin symbols which trigger Free Spin Bonuses when 3 or more appear anywhere on the screen. Additionally, a Magic Hat Symbol becomes active during Free Spins and Lucky Leprechaun 5 Reel Slot Machine Game features a special Prize Pick Bonus Round. Players choose lucky seven symbols to reveal cash prizes. If you would like to play this game on the go, then you will be happy to hear it is compatible with both iOS and Android devices.

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Karate Pig

Microgaming have a penchant for making quirky themed slot machines, and is perhaps one of the most unusual ones yet. Who wouldn't want to watch an animated pig wearing karate gear and performing martial arts moves? Well, apparently someone at the reputable software provider thought it would make for a great idea for a casino game, and we must say we are impressed with the results. Underneath all the flashy animation and humorous voice overs, this is a regular 5 reel 25 payline video slot. That is not to say there aren't any interesting features, because this game offers Wild symbols, Wild x3 Multiplier symbols, Wild x5 Multiplier symbols, Scatter wins, Bonus symbols and a Bonus Game. Getting 3 or more Bonus symbols on selected paylines activates the Bonus game where you get to kick boxes for real cash payouts based on the triggering bet. Aside from that, wild symbols can expand to cover the whole reel, while also acting as substitutes for all symbols except bonus and scattered Volatile herbs. With a maximum bet of $250 per spin, high rollers have a lot to look forward to with this title. Not only that, but the 91.56% RTP rate indicates that player investments will be returned sufficiently over the long haul.

Wheel of fortune

We end our list with one of the most iconic slot machine brands of all time - . Ever since being introduced to the public in the 1990s, this game has become synonymous with Las Vegas casinos, so much so that it warrants appearances in various pop culture products. Created by IGT, this title has benefited greatly from the company's decades of experience in making these types of games. It boasts a traditional setup, with a 5 x 3 play area and 9 optional variable paylines. The central attraction of this game is the large dancing wheel bonus symbol located on the centre payline. Landing one or more of these guarantees bonus payouts depending on the number of wheels and segments, with the top award being $12.0000 for betting the maximum of 3 chips per payline. In addition to the wheel bonus, this game also has King, Queen, Ace Bonus symbols which trigger a secondary bonus wheel game with progressive jackpot. With its colourful design and catchy jingle, it is no wonder this game has remained relevant for almost 3 decades. Even though Wheel of Fortune predates smartphones, there is a fully functional mobile variant which preserves all the characteristics of the desktop version.

How to Play Online Slot Machines

Before we move onto the conclusion and our runner up lists, we'd first like to walk you through the process of playing slot machines online, using one of our recommended sites as an example.

Once you've signed into , you'll most likely end up in the lobby. Navigate to the slots category or use the search bar to track down your preferred game. Clicking on it should bring up the option to demo the game for free or play for real money. Choose the latter if you're ready to bet some cash, and you'll be taken straight into the slot machine.

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Each game has its own specific features and settings, which you can adjust as per your preferences. Read the paytable to familiarise yourself with the various symbols and payouts. Check out the tutorial if one is provided. Once you're ready to play, select your bet size and press spin. Bonuses should become active during the base game randomly. Some slots require you to bet a certain amount in order to qualify for them, so keep that in mind when selecting your paylines and coin denomination.

How We Ranked the Best Bonus Slots

Like most things on our site, we judge slot machines by a strict set of criteria. Since we wanted to find the top bonus slots, we naturally put extra weight on the bonus features and how engaging they actually are. Other factors included volatility, jackpot size, platform compatibility, developer reputation, and availability of demos versions. If you're still wondering whether we are a reliable and trustworthy source, then check out the table below to see some of the top brands we partner up with .

Bonus Features – How They Work

Slot machines are known for their simplicity, which stems from the fact that they have very few controls and bonus features. However, things have evolved quite a bit in recent years, with developers constantly trying to innovate and spice up the gameplay of their creations. Let’s take a quick look at some of the most common bonuses you can expect to find in the best bonus slots:

  • Wild Symbols – These represent the most basic type of bonus and can be found in nearly every single slot machine out there. Wild cards can take the place of any other symbol on the board, thus creating winning combinations where there originally weren’t any. * Scatter Symbols – While wilds take care of connecting matching symbols on neighbouring positions, scatters don’t have to obey the laws of the slot machine grid. They can give payouts regardless of where they land on the screen, often triggering other bonuses in the process. * Free Spins – Perhaps one of the most sought after bonuses in all of gambling, free spin rounds give you a predetermined number of attempts at hitting it big without requiring any additional investment on your part. * Bonus Games/Features – Certain symbols can trigger mini games or additional features within the slot itself. These can vary widely, so it’s hard to generalize too much, but some examples include pick and click games, duels against AI opponents, moving along trails, etc. And those are just the tip of the iceberg. * Progressive Jackpots – We’ve saved the best for last, because who doesn’t dream of hitting a massive jackpot and becoming an instant millionaire. Random events or special symbols can trigger these jackpots, with the prize pool continuing to rise until someone wins.
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Types of Bonus Slots

Having established what constitutes a bonus slot machine, we would now like to examine how exactly these games can provide us with additional features. There are several methods for achieving this goal:

  • Fixed vs Programmed Jackpots – Most players are used to seeing jackpot slots that have 4 different progressive jackpots (usually named after colours), which are won at random. However, there are other techniques employed to keep things fresh and unpredictable.
  • Ways to Win – Instead of, or in addition to, win lines, some games will count matches based on adjacent symbols anywhere on the grid, increasing your chances of scoring a combination.
  • Special Symbols – From stacked icons to overlay wilds, there are many creative ways to introduce bonus symbols that break the usual patterns in slot machines.

Advantages of Playing the Best Bonus Slots

At the end of the day, bonus slots are a great way to add variety to the gameplay of your favourite games. Whether it is in the form of free spins, jackpots or some other creative feature, these bonuses can help keep you entertained during extended sessions of spinning the reels. Since modern slot machines tend to be highly volatile, it can take a while to hit the right symbols, and this is where bonus features step in to give you a better shot at winning something worthy of your time.

The Best Software Providers of Bonus Slots

No matter how good a game looks, it means nothing if the software provider powering it isn’t trustworthy and reliable. Over the years a number of companies have distinguished themselves by consistently releasing amazing content. Below we have listed some of the best bonus slot software providers:

These are just a few examples of what is otherwise a long list of high quality providers. If you would like to know more, we recommend checking our guide to the where you can find detailed reviews, recommendations, and demo games.

Frequently Asked Questions

To wrap up our bonus slot machine guide, we have prepared a short FAQ section which deals with some of the most commonly asked questions on the subject. Even if you are experienced with playing bonus slots, there might be some interesting tidbits worth reading.

🎰 What are bonus slot machines?

Every self-respecting slot machine will have some sort of bonus featured advertised. These can range from free spins, to sticky wilds, and even huge network wide jackpots. is simply a term used to describe slots which have one or more of these attractive features.

📱 Are these games available on mobile?

Of course they are! Nowadays nearly all new slots are designed with mobile devices in mind, meaning you can enjoy your favourite titles wherever you go. Look for the 'play on mobile' casinos in our review list for the best suggestions.

🥇 How did you choose the best bonus slot games?

We are sticklers when it comes to quality, which is why we evaluate each slot machine on a range of criteria. Bonus features, platform compatibility, return rates, developer reputation, and availability of demos are some of the factors we consider.

💰 What symbols trigger bonuses in slot machines?

It depends on the game in question. Scatters are probably the most common method, requiring you to land several of them anywhere on the screen to get your hands on some extra content. Wild symbols and bonus symbols are also typical triggers.

🔝 Why are these the best bonus slot machines?

Our expert team has thoroughly examined dozens of titles before compiling this ranking. The entries here offer a compelling mix of gameplay, bonuses, and jackpots, ensuring a fun experience on a variety of platforms.

Conclusion

Well, there you have it - our definitive guide to the best bonus slot machines. We hope you have enjoyed it and learned something new along the way. Feel free to browse through our recommendations and see if any of them tickle your fancy. Remember to gamble responsibly and have fun. Happy spinning!

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