Monster Casino
Slot Game

New Players Only. Wagering occurs from real balance first. 50X wagering the bonus. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus valid 30 Days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Min Deposit £20. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply

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Online Slots

Slots are one of the most engaging and enticing casino games to play on the web. After all, online slots come with spellbinding themes and graphics, and there are several in-game features that players can take advantage of. Also, the adrenaline rush that comes with hitting the right symbol combinations in online slots is truly unmatched.

At Monster Casino, we bring you the widest selection of online slots, including classic slots, video slots, progressive jackpots and more. From the Phoenix Paradise slot game that takes you on a jungle adventure to the Leprechaun’s Vault slot with enticing bonus features, there’s a lot of slot gaming action to be discovered on our site. Sign up now and dive into the fun today!

online slots

Getting started with online slots at Monster Casino

Sign up or log into your Monster Casino account

As an online slot player, the first thing you need to do is sign up for a Monster Casino account. Do you feel intimidated by this task as a beginner? Don’t worry. Our registration process is straightforward and can be completed in just a few easy steps. And if you’ve already signed up with us previously, you need to log into your Monster Casino account using your login details.

Select your preferred slot game

Once you have set up your casino account, the next thing to do is to choose and load your preferred slot game. Then you’ll be transferred to a gameplay screen featuring the slot reels, operating buttons and other information about the game.

Go through the game’s paytable

At this point, we recommend you go through the pay table of your chosen slot game. This will let you know how much each symbol is worth in the game. Also, it will help you get acquainted with the specific payout rules for the slot title.

Choose your bet size

After this, you must select your wager size and the number of paylines you wish to play. You can choose the ‘Max Bet’ option if you want all the paylines to remain active for that round.

Initiate the gameplay

Now, all you need to do is click the ‘Spin’ button to start playing. The paytable of the game will determine how much you will receive if you get a winning combination.

The different types of online slots

Back then, players could choose a few slot game categories, such as classic slots and one-arm bandits. Nevertheless, today's slot gaming options are more diverse and varied than ever before. Below are the main types of online slot games you can find on our website:

classic slots

Classic slots

Simply put, classic slots are digital versions of the original 20-century slot machines. Classic slots usually come with a 3x3 grid and are preferred by players who enjoy playing straightforward slot games. To win at these slot games, all you need to do is get a combination of three or more matching symbols on your reels.

Progressive Jackpot slots

Progressive Jackpot slots

These are highly-popular slot types in the online slot gaming world. This is because progressive slots come with a jackpot prize that increases every time players place a wager on these games. Also, the jackpot amount continues to rise until someone wins. As soon as the jackpot prize is won, its value resets and rises again.

3D slots

3D slots

3D slots are a relatively new entrant in the world of online casinos. As their name implies, these slot games offer a more engaging gaming experience by featuring top-notch graphics, high-quality animations and mesmerising soundtracks. Also, many 3D slots come with additional bonus features and have complex storylines for players to follow.

Multi-Payline slots

Multi-Payline slots

Players can play these slot games with an increased number of paylines and symbols. Depending on your chosen slot title, the number of paylines in multi-payline slots can range between 20 and 100. Furthermore, the paylines in these slot games can take multiple forms like vertical, diagonal or zigzag, making the overall gameplay more engaging and exciting.

VR slots

VR slots

VR slots are based on Virtual Reality technology. VR slot games immerse players in a virtual slot gaming environment that they can interact with using a VR headset. That way, players experience the same slot gaming ambience as they would have in a land-based gambling venue.

Video slots

Video slots

Video slots are computerised versions of 5-reel slot games that became popular in the late 20th century. But unlike their land-based counterparts, video slots come with several additional features, such as scatters and wilds. Also, many video slots have in-game bonus rounds triggered by landing the right combination of special symbols.

Top Slot Features to Check Out

At Monster Casino, our players can find several extra features, including re-spins, random wilds, and jackpot rounds. The exact function of these features varies from game to game, but they usually offer players additional ways to win. Below is a list of some of the most common slot features.

Random wilds feature

With the random wilds feature, the reels of your chosen slot game can see the appearance of wild symbols at any point during the gameplay. In most online slots, the random wilds feature can get triggered in both the base game and the bonus round.

Gamble feature

This is another exciting slot feature that can be found in some top online slot games. Here, players have the chance to multiply the amount they’ve won on a specific spin. As you’d guess, this feature gets activated when you get the required winning combination.

Respin feature

Starburst was the first online slot game to introduce this feature. Players don't have to pay for their next spin when the re-spin feature is triggered. In that way, they can improve their overall payout or try to get the required winning combination.

Tumbling reels

Tumbling reels are called dropping symbols or cascading reels. With tumbling reels, your winning symbols cease to be visible as soon as you hit a payout line. This, in turn, leads to other slot symbols taking the place of winning symbols. As such, you have another chance of forming a successful combination again.

Common slot symbols in online slots

Slot symbols are a highly significant aspect of online slot games. As a player, understanding the characteristics of different slot symbols ensures that you’re better informed about what to expect from the symbols featured in your chosen title. At our casino, we have the following types of symbols on slot machines.

Standard symbols

Standard symbols

Standard symbols are just regular symbols found in any online slot game. The function of these symbols is to offer a payout when you manage to get enough of them on your reels.

Wild Slots

Wild Slots

Wild symbols are a type of online slot symbols. They are unique in the sense that they can act as a substitute for other symbols (except scatters) in slot games. That way, players have a better chance of winning.

Scatter symbols

Scatter symbols

Scatter symbols are a prominent part of several top online slot games. Depending on your chosen slot title, scatter symbols can activate a free spin round or offer higher payouts. But note that some slot games can trigger both.

Bonus symbols

Bonus symbols

As their name implies, landing the required number of bonus symbols triggers an in-game bonus round. With bonus symbols, players stand a chance to collect extra prize rewards.

Exciting slots bonuses to grab at our casino

At Monster Casino, slot players can take advantage of several exciting bonus offers. Also, we keep offering numerous exclusive promotional rewards from time to time. Below are some of the many slot bonus rewards you can receive with us.

Free spins

Free spins are slot bonus rewards that allow players to enjoy free spinning rounds in a given slot game. With us, you stand a chance to claim a generous number of free spins you can use on particular slot games. Also, our free spins bonus comes with decent wagering requirements, meaning you won’t have trouble meeting them.

Welcome bonus

Monster Casino offers new players a Welcome Bonus as a way to show our appreciation. Creating a Monster Casino account and making your first deposit qualify you for our welcome reward. Again, the wagering terms are generous here, so you can satisfy them and receive your bonus amount.

Top online slot games to try

We cater to our online slot players by offering slot games of all types. While all our slot titles are enjoyable in their respect, some slot games are enjoyed by slot players worldwide. Below are the top online slot titles you may want to try.



Developed by renowned software provider NetEnt, Starburst is an online slot game that has been a player favourite for years. Starburst takes players on an adventurous space journey filled with diamonds and other precious jewels with its distinctive theme. There are respins and expanding wilds as bonus features in this game.

Book of Dead

Book of Dead

The Book of Dead slot is based on the popular Ancient Egyptian theme featuring 5-reels and 10 paylines. A cool thing about this slot game is that it triggers free games when you get three Book symbols on the reels. What’s more, players can take advantage of the Gamble feature to try to improve their final payouts.

Gonzo’s Quest

Gonzo’s Quest

Gonzo’s Quest is another popular slot game by NetEnt. This online slot requires players to follow Spanish explorer Gonzo on his search for the lost mythical golden city, El Dorado. Along with featuring top-notch graphics and high-quality animations, Gonzo’s Quest has several additional features like the Free Fall bonus and Expanding Wilds to keep players engaged.

Fishin' Frenzy

Fishin' Frenzy

Fishin’ Frenzy is a fun and entertaining online slot game based on an underwater theme. While the slot comes with the standard 5-reel and 10 paylines setup, it includes multiple additional features that can offer decent wins if you get lucky. Add to that, the attractive graphics and immersive soundtracks in Fishin’ Frenzy, and you have an entertaining slot game to try.

Rainbow Riches

Rainbow Riches

Rainbow Riches is a simple yet engaging slot game to play online. Offered by renowned slot provider Barcrest, Rainbow Riches comes with five reels and has 18 winning combos. As with other top online slots, the game gives extra features such as scatters and wilds upon landing the required symbol combination. Then there are the Pots of Gold, Wishing Well, and Road to Riches bonus rounds.

Fluffy Favourites

Fluffy Favourites

Having a nostalgic theme based on cuddly toys, Fluffy Favourites is a 5-reel, 25-payline slot game. What makes Fluffy Favourites stand out from other online slots is the fact that it offers free games. If players manage to get between 3 and 5 Pink Elephant Scatters, they can benefit from 15 to 25 free games. Pretty exciting. Right?

Popular slot software providers

At Monster Casino, we are committed to offering you a safe, engaging and entertaining slot gaming experience. As such, we only provide slot games from software providers that are licensed, reputable and trustworthy. We offer online slots powered by some of the most popular online slot software providers.



Based in Sweden, NetEnt is an online casino software provider that has been around for more than two decades now. Today, NetEnt has built a reputation for itself by offering slot gaming solutions to some of the largest casino operators in the world. Also, you can find several popular progressive jackpots from this software provider.



Playtech is another renowned software supplier that began its operations in the late 1990s. Playtech's slot games have some of the most alluring and engaging software designs. The company is known for their innovative slot solutions. Also, many slot titles by Playtech have several in-game features and bonus rounds that offer increased entertainment to slot players.


Play’n Go

Play’n Go specialises in mobile slot offerings and is acclaimed for providing high-quality mobile casino solutions. It has a rich and diverse portfolio of mobile slots, ranging from traditional slot titles to megaways games. All the slot games by Play’n Go are cross-compatible, meaning you can easily access them on smartphones, desktops and PCs.



Microgaming is a casino software development company that’s located on the Isle of Man. It offers excellent casino solutions to several top online casinos that operate in key markets. Since its introduction, Microgaming has won dozens of industry and non-industry awards for its top-notch slots offering.


ELK Studios

ELK Studios is a Sweden-based game studio that provides some of the most brilliant and attractive slot games to reputable online casinos. The game provider also constantly works on its slots offering, so players can get the most out of these games.


Inspired Gaming

Inspired Gaming is an innovative casino gaming provider specializing in slot machine offerings. It powers over 50,000 slot machines in brick-and-mortar venues and offers top-notch slot games to more than 170 online casino sites. All the slot titles by Inspired Gaming are omnichannel and interactive, allowing players to have seamless slot gaming entertainment on any device of their choice.



Originally started as a computer game development company in the late 1990s, Eyecon shifted its focus toward the online gambling market in 1999. Today, Eyecon has a vast selection of online slots that includes more than 60 slot titles. Similarly to other renowned providers, Eyecon offers slot games on various platforms.



Genii is another software provider that provides slot games and popular casino classics. With an experienced team of developers and casino veterans, its main focus is always on offering innovative slot games.

Why You Should Play Online Slots at Monster Casino?

Our extensive selection of slot games is the first reason to play with us. We feature a diverse portfolio of online slots that has something for every type of casino player. If you wish to start with popular online slots, then there are the Wheel of Fortune, Rainbow Cash Pots and Twin Spin slot games. For players who enjoy playing megaways slots, we have Return of Kong Megaways, Reel King Megaways and Gonzo's Quest Megaways, Bonanza Megaways, and Fruit Shop Megaways among others.

Also, we are a completely licensed and regulated online casino gambling platform. So, you’ll always have a safe and secure online slot gaming experience with us. The wide variety of payment options we offer ensures that you will have no problems processing transactions at our casino. What’s more, our responsible gambling tools will ensure that you always responsibly play slots.

Enjoy slot gaming on the move

These days, many slot players prefer using their smartphones or tablets to play slot games. This is because mobile devices allow them to access their favourite mobile slots whenever and wherever they wish. For example, players can play mobile slots on their mobile devices while waiting for their order in a restaurant or commuting to work on a bus. And at Monster Casino, we fully understand that.

We offer a fully optimised mobile platform for players who want to enjoy slot gaming on the go. Our mobile site is compatible with all the top operating systems on the market. As such, you can seamlessly access it on both Android and iOS devices. Also, you don’t have to worry about doing additional registration to play mobile slots on our mobile platform. When you sign in to your Monster account, you can play slots on the go.

Try your hands at several other casino games

At Monster Casino, we don’t limit ourselves to just online slot games. With us, you can choose from several other popular and exciting casino games. If you prefer playing card games alongside slots, then there are multiple variations of Baccarat and Blackjack for you to try. If you wish to play instant-win games, you may want to check out our Bingo, Scratch Cards and Roulette games. Then there’s a dedicated online betting section for slot players who also enjoy wagering on sports. All in all, you’ll never run out of options at Monster Casino.


Simply put, free spins allow players to spin the reels of a given slot game without having to pay to play the game. Any reward won here can be cashed out by completing the wagering terms or other game requirements.

The outcome of every online slot game is random. Therefore, it’s impossible to know how often a slot machine will hit the jackpot prize.

That's right. In online slots, you can win real money if the odds are on your side. Instead of using online slots to make money, focus on their entertainment value.

Responsible gambling means that a casino player is aware of his gambling actions, and his gambling behaviour doesn’t cause any social or financial harm to himself and others.

Yes, all online slot games at Monster Casino uses Random Number Generator (RNG) to generate random results. As the RNG software is fully computerised, you can rest assured that the outcomes in our online slots are random.