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Slots Guide


Our gambling slots guide takes a look at the various slot types you can play, the modes you can play them on, features you can trigger on the slots, and the providers you will come across on the gambling slots sites. Read through our online slots guide.

Most Common Types of Online Slot Games

The iGaming market is here with us, and as opposed to when slots were offered as offline machines, the online gambling space has changed the game. Today, players can readily access different slots at their comfort either via desktops, tablets, or mobile phones. Online gambling slots are popular and unsurprisingly, most of the online casinos are offering them in large amounts.

Here are the most common types of online gambling slots:

Classic/ 3 Reel slots

They are also referred to as fruit slot machines on some gambling sites, and they are the easiest online slots you can play. They reminisce the old times, and they are limited in terms of playing space and symbols. They will have three columns and three rows of symbols offered with the middle row representing the payline. To win this type of slot, three similar symbols should be matched up on the payline.

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Video Slots/ 5 Reel slots

These are yet other common online casino gambling slots to expect. They are among the most preferred slots, and they are more complex than the classics. These gambling slots will have five reels and increased paylines that translate to more chances of winning. They also come with more exciting features, especially graphics, symbols, and other specials.

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3D Slots

3D slots provide a modern feeling and are among the most recent offerings. They come with detailed technology on the graphics with characters animated in 3D improving the interaction with players and a general playing experience.

Different storylines and settings will be on these slots, just like on the video slots. However, the standout factors will be the audio settings, improved themes, and animations.

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Progressive Slots

These are other common types of gambling slots you will find in the casinos. One standout factor about these slots is the jackpot feature that comes with them. There is more to this jackpot. The grand prize will not be fixed. Instead, it will be an increasing grand prize every time the slot is played. For a progressive slot with many players playing, you can expect an enormous grand prize, and until one winner wins the jackpot, the grand prize will be increasing. The jackpot will then reset to its seed value and start the same process again.

Mega Moolah is one of the most popular progressive gambling slots. In October 2018, a lucky player recorded an €18,915,872.81 win, which to date is the biggest online slot win.

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Virtual Reality Slots

These are other casino gambling slots you will find on various platforms. They are also modern and an improvement of 3D slots. With VR slots, players can expect an experience that seems real thanks to helmets, LED lights, and sound systems that help provide an immersive experience.

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Megaways Slots

Megaways slots are gaining ground. With this, a Megaways mechanic will modify the reels and change the number of symbols appearing on a reel after every spin to provide enormous different ways to win. Players can have up to 207,004 different ways to win!

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Mobile Slots

As the name would suggest, these are gambling slots designed to be played on mobile devices or tablets. Despite the different screen sizes, the visuals are not compromised. Important to note that most of the types of slots we have reviewed are compatible on mobile.

Slot Machines Playing Modes

Casino gambling slots can be played in two major ways as follows:

Real Money Slot Machines

These are real online gambling slots that will involve playing with your money/deposit. The endgame of these slots is to win prizes, and for that to happen, you will have to match the bet size placed on your favorite slot. After this is done, spin the reels, and you can expect real money returns if the slot wins. If your bankroll is exhausted, you cannot play for real money unless an additional deposit is made.

Free Slots

Free gambling slot machines exist in casinos. This is not a drill. While every player wants to win something, you can still enjoy slots for entertainment. Most slots offer a ‘demo mode’ that doesn’t require you to have a deposit to play. These slots will allow you to play for free, but you cannot win anything on this mode of play as you would expect. Free online gambling slots are all about helping a player gain insight into the slots before making any deposit.

Slot Games Bonus Features

Online gambling slots place their focus on keeping players entertained and engaged. This includes offering features that will play more and more to trigger them. With these features, players can also improve their payouts. They are many as slots come but the most common include:


They are categorized as special symbols that can appear anywhere on the reels. At least two scatters appearing on the reels in some of the slots will trigger a win, free spins, multipliers, or bonus rounds. To make it better, scatters may even trigger a bonus game.


Wilds still fall under special symbols, but unlike scatters, wild symbols must appear on a payline. The symbol tends to act as a Joker and can substitute all other symbols except scatters. This sees a winning combination formed. Based on the slot theme, a Wild symbol will be different.

Free Spins

The most common type of feature to find on online gambling slots UK. They are triggered differently depending on the casino. They are triggered once a player lands on several scatter symbols in most cases. A set number of free spins will be offered, and to make the deal better, some online casinos combine them with other features such as multipliers and wilds that lead to further and mega wins.


Multipliers are also common features to expect on the gambling slots online. As the name suggests, these multipliers take effect on your winnings by multiplying them. They are offered in different value with some slots offering as low as x2 and others offering as high as x1000.

They will be offered differently. Some slots will offer these multipliers in the base game, while in other cases, they can be offered as part of free spins offerings. In other cases, the multipliers will apply to the original bet/stake as opposed to winnings.


Jackpots are other popular features offered on the slots. They come with extreme life-changing prizes from a normal stake. While the chances of hitting a jackpot feature are low, it isn’t impossible. Two different types of jackpots can be expected. Some slots will offer progressives with other offering fixed jackpots.

Progressive Jackpot Slot Games

Progressive jackpots pass among the most sought-after offerings in the slots section. Most online casinos offer these slots that come with a promise of life-changing returns for players. Progressive slots increase their grand prize value every time someone plays the slot. There exists no fixed grand prize, and that’s the main difference these gambling slots have over fixed jackpots.

A different twist is introduced to these gambling slots. Most progressive slots are pooled with other slots, so the grand prize keeps rising fast. However, standalone progressive slots also exist. To understand progressives better, view them as lottery games where chances of winning are low but once won, prizes are extremely huge. The prize increases from the continued drawing until a lucky winner is got. The prize then resets to its starting value.

Some of the best online gambling slots in this category include Mega Moolah and Major Millions from Microgaming, Mega Fortune and Arabian Nights from NetEnt, and Age of the Gods and Gladiator from Playtech.

Mobile Slot Games

You will find out that most of the gambling slots being released are provided in instant play mode with the casinos utilizing HTML5 technology. The two aspects will see a player playing the games without the need to download and with HTML5 technology, there is multi-device compatibility explaining why it is possible to play the slots on mobile devices.

What is required is to have a stable internet connection, and you are in. Mobile slot games allow you to play free gambling slots and real money gambling slots. Further ahead, you will find the online casinos going a step further to incorporate mobile applications, and the gambling slots will still be accessible. Many players will find out playing online gambling slots on mobile apps easier and faster than on the mobile site.

To enjoy the mobile slots, ensure you create an account at a casino that offers a mobile casino. Ensure the casino you select is trusted and legit and offers a plethora of slots from a variety of software providers. Remember, all the online gambling slot types will be hosted.

RTP (Return to Player)

Every online gambling slot you will come across will have an RTP (Return to Player). This is usually expressed in percentage form and will signify the average returns you can make on a certain slot. Crucial to note that the returns are average and not every time you play the slot. This means that an RTP is determined after several plays in the long term.

If a slot has an RTP rate of 95%, the average return on a £100 bet will be £95. From the RTP, you can also calculate the house edge. This is the advantage the casino boasts over you. In our slot, the house edge will be 100% – 95% = 5%.

Among the top gambling slots tips, you will find will include you selecting slots with the highest RTP. Generally, the best online gambling slots will have their RTP going above 97%. Low-paying slots will have an RTP going below 94%.

Slot Games with No Deposit

Do you know you can win real money with no deposit while gambling slots? Some casinos offer no deposit bonuses that might be a cash bonus with most offering free spins. While they are low in value, players will enjoy real money prizes from the bonuses.

The best part is that you can extend your bankroll and continue scooping prizes. If free spins are offered as bonuses, they will have a set value, and once you spin the maximum times with no win, you will now be required to deposit to enjoy real money winnings. Some casinos might go further to specify the slot that the free spins can be used on. This makes playing the other slot games ineligible. Finally, wagering requirements will be provided on these bonuses that should be met before withdrawing the winnings.

Advantages of Playing Slot Games Online

A variety of reasons are attached to this, including:

  • A variety of titles are available as opposed to offline casinos
  • A plethora of features can be triggered
  • They can be played anywhere
  • They are compatible with multiple devices
  • They are easy to play
  • Players can play for free or real money
  • Players can claim bonuses and promotions
  • Availability of progressive slots with huge payouts

Slot Machine Strategy

Unlike some casino games such as Blackjack that you can devise a strategy to play and win, online gambling slots will not have a 100% strategy that you can use to win the games. All slots are 100% fair to every player, whether you are a beginner or experienced. Online slots use an algorithm, Random Number Generator (RNG), tested by independent bodies. The algorithm ensures that results are random and fair. This ensures no predetermined results are achieved on any spin. The best strategy to win better payouts is focusing on gambling slots with a high payback percentage.

Slot Machine Software Providers

Where do slots come from? Well, software providers are the creators of every online gambling slot you play. They come differently. However, their main focus is usually to combine quality and quantity in their offerings. Quality checks on parameters such as graphics, themes, styles, soundtracks, and bonus features. Quantity checks on the number of slot games offered. The iGaming industry has seen several top software developers that have dominated the slots industry.

They not only offer slots and other casino games but also provide backend management tools. With the tools, security is achieved, affiliate marketing, and fast payouts. Some of the top software providers to expect include:

  • Microgaming – Famed for its huge collection of quality slots that go above 600. The provider is the creator of Mega Moolah, one of the best online gambling progressive slots.
  • NetEnt – Famed for popular video slots such as Starburst, Gonzo’s Quest, among many. It also provides a jackpot title, Mega Fortune.
  • Playtech – Famed for a myriad of titles, including Age of the Gods
  • BetSoft – Famed for over 120 3D slots

Other providers to come across include:


Online gambling slots remain the most popular casinos and the first stop for many beginners. The guide has covered the basics of these games, and there is still more to learn, including how to play slots, slots reviews, RTP slots guide on how it is calculated, volatility, hit frequency, and so much more. Casinobonustips has this covered, and you can familiarize yourself better before gambling for real money.

Is there a way to tell when a slot machine is going to hit?

There is no way one can predict a due slot machine since all the spins and results are random.

What is the best day to win slots?

While you can win the slots on any day, many believe that a Friday or a weekend is the best period to win slots since many players will be wagering, thus increasing the chances of hitting a payout.

What is the trick to winning on slot machines?

There exists no 100% trick to winning slots. However, some tricks like playing high denominations on slots with higher payback percentages will improve your chances of winning.

What happens when a slot machine is reset?

When a progressive slot, for example, is reset after a winner is announced, the prize will be reset to its starting value.

Posted by Daniel Velasquez
Former Casino Brand Owner

Previously owned his own small casino brand, Daniel Velasquez becomes an expert in the online gambling domain. He writing perfect reviews from a managerial perspective based on his own experience.

Daniel understands customer needs and able to provide an objective evaluation for casinos he is reviewing. His main aim to guide new customers in the attractive world of online gambling.

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