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What are the Online Slots?

If you enter a land-based casino or visit an online casino you will find among the traditional games like roulette and blackjack also lots and lots of slot machines. Slots have become the preferred casino game of many savvy players.

The reason is that they are in fact one of the most efficient ways to boost your bankroll. You can play a spin in the Bellagio or play at one of the best online casinos it doesn’t matter. Spinning reels is one of the best ways to go if you want to have a chance to win more.

Playing slots though can be confusing at times

Slots are not like blackjack or roulette where if you know the game you will be more or less in control of the situation wherever you are. With Slots, there are tons of variations and many bonus game jargons to digest.

This is why here at CasinoBiggestBonus.com we have decided to prepare this online slots guide. With that, you will learn everything you need on online slots: pay lines, progressive jackpots and more. We got it all covered here so take a deep look!


Similarly to brick ‘n’ mortar casino, real money online casino also market their online slots very heavily. The reason is that they are very popular, they are nice to look, they are fun, they are profitable for the casinos. In addition to that, they could create big winners even if a player only stakes a low amount.

The popularity of online slots has grown significantly

With the arrival of the internet and even more the smartphones, the popularity of online slots and their younger brother mobile slots have grown exponentially.

So let’s spend some time to find out how you can play them. Also, you will learn where you can find the best ones and which ones have the highest return. After that, you will be in a very good position to try them yourself and have some fun and possibly some big wins!

How can you find good slots online casino?

Best online casinos have deals with the most famous developers. For this reason, it goes without saying that you will find the best slots in the best online casinos. Some developers, however, will have some exclusive deals with some online casinos.

They provide their slots suite so not all the casinos are the same. In this field, it is worth investigating before jumping on the wrong wagon.

How to play online slots?

Before looking at what are the best slots let’s learn (or refresh) how to play online slots. The first real money online slots appeared in the middle of 1990s. They were pretty basic and only had few reels and one pay line.

Nowadays you can find slots with 3 reels, 5 reels, and astonishing 1,024 pay lines. They are all singing and dancing products with expensively animated sequences. You will find also slots based on the latest Hollywood blockbusters. Online Slots

Let’s simplify

It doesn’t matter how the slot looks they all basically work in the same way! Yes, there are some slight differences depending on the developers. For this reason, it is worth investigating before starting to play with real money so that you know what you are trying to achieve.

For instance, you can try the free-play versions of those games who are widely available. Most of the big slots developers will surely provide a free-to-play versions of their real money slot games on their websites so that you can familiarise with the features.


Why play online slots?

Online slots are the best example of real gambling. Gambling is one of the most popular entertainment activities on the whole planet if done responsibly.

Online slots are some of the most popular games at online casinos and the reason is simple. They can deliver the adrenaline rush that you will struggle to find elsewhere. Some of them have jackpots that can change your life in a few minutes.

Hitting that big jackpot!

Surely winning is the best part of playing online slots but most people still think it is impossible to win big. This is not true and big wins do happen regularly. Nearly every single month there is a very lucky person who had enough gut to play online slots. With a £10-£20 stake, he brought home several tens of thousands of pounds.

The thing to remember is that you don’t have to play with very high stakes to win. Surely if you bet big you might get higher payouts but you need to consider that luck is the main ingredient when playing online slots.

Can you win money playing Online Slots?

You have finally decided to play online slots in a real casino. Well done. Yet, you are still afraid and not willing to risk your own money. Do you know that there are people that have been able to win real money without even spending a single penny? How they have done that? Well, the answer is simple: they have used casino bonuses.

Several top online casinos do offer no deposit bonuses to attract new customers. Without having to worry about making the first deposit with your own money, you can pocket free credits and start playing at online slots.

The competition in the online casino industry is fierce and brands need to go the extra mile to attract gamblers and increase their market share. All that is required is to complete a registration. Once you have done that, the player will be given a certain amount of money (normally not more than £10) to try out online slots.

If you get lucky you will get a win and increase that bonus amount. Remember that when you are playing with bonus money you would need to clear the wagering requirements before you will be allowed to withdraw.

Why is it important to read terms and conditions?

To avoid disappointment down the line you should always read the terms and conditions of all casino offers you are taking advantage of. If you do that, you will ensure that you get the maximum out of online slots promotions.

Playing online slots it is safe and exciting

So, in conclusion, we can say that playing online slots online it is exciting and safe. It is important that you only sign up to the best online casinos to avoid any problems. On CasinoBiggestBonus.com we only list those that are 100% licensed and that have been tested and reviewed by our team of experts.

If you are a beginner and you are playing online slots for the first time do not start with huge bets. Take your time and increase your bets when you have made some experience. Remember always to gamble responsibly.

How to spin the slots reels?

So you made it into an online casino. You have registered an account and deposit some money. Now you need to load an online slot from an online casino or instant play site. Done that, you will see your screen filled with reels. The traditional slot has 3 vertical reels however the modern ones have 5. On each reel, you will have around 20-25 symbols which will be different from slot to slot depending on the design and theme of the slot.

The aim of the game is to spin the reels and get a winning combination of symbols once the reels have come to a stop. Considering that there are many symbols on the reels there could be up to millions of possible combinations to get. How do you spin the reels? Very simple as you will see a ‘Spin’ button at the bottom right of the screen. As soon as you touch it the reels will start moving.

Some slots also give you the chance to show your skills. They have a ‘Skill Stop’ button that will allow you to stop the reels yourself when you believe the right combination is about to come up. Considering that the reels are going really fast it is not easy but if you are up for a challenge then why not trying your skills?

How can you see how much you can win on the online slots?

Every slot has different payouts. Before you even start playing you can click on the ‘Paytable’ or ‘Info’ that will direct you to a separate page.  Here you will have all the necessary information about the slot including a table with the various payouts for the different winning combinations.

You will see all the winning symbols and also the details of any bonus rounds if those are available in the slot you have selected. In this page, you might also find the theoretical Return To Player (RTP) percentage but this depends on developers.


What are bet size and paylines in an online slot?

Before you start playing in a real money slot machine you will need to decide the bet sizes. Also, you would have to choose the number of paylines you are going to play for. There are lower variance games which are for players with less money to spend. Here you can find the betting starting from as little as £0.01 per line.

How many coins you are going to bet?
Slots paylines

Once you have decided the bet size you will need to decide how many coins you are going to bet on a particular line.

Normally the range is between 1 to 10 coins per line. After that, you can choose how many paylines you want to play. Just so you know the paylines are the combination of symbols across the reels. It is entirely up to you how many payline you will play for. You can bet on one payline or the maximum possible.

Are you getting confused?

You shouldn’t be so let’s make it more real with one example. Imagine your online slot has 25 paylines. The betting ranges go from £0.01 to £1 a coin. This online slot also allow you to bet up to 10 coins per line. In this case, you will be able to play one coin at £0.01 on one payline which means your bet per spin is just £0.01.

If you are brave you can also go for the maximum. In this case £1 a coin, 10 coins per line and the maximum 25 paylines. Your bet per spin will be £250. If you are interested in this option you can also click the ‘Max. Bet’ button which will automatically make this maximum bet for you.

Not all the slots have variable paylines. Some slots have fixed paylines. This means you will have no choice in how many paylines you get to play. This could lead to bigger losses if things move against. On the other hand, you will have more chances of hitting more winning combinations.

What is gamble / double up in an online slot?

When you have made a decision on bet sizes and paylines you are ready to hit the ‘Spin’ button. At this point, the reels will spin and then come to a spot. If you win you will be paid out. Some real cash slots will also give you the chance to double your winnings. This is done via the ‘Gamble’ button which is normally a simple ‘red or black’ or ‘highest or lower’ card game.

What are the slot games symbols?

Normally you will find around 10-12 different symbols in a real money slot. The type of symbols can be anything really from the usual melons and cherries to superheroes, diamonds, gold, poker symbols, aliens, queen and so on.

Normally if you like a theme you will find that there is an online slot invented to mirror it!


What are Wild and Scattered symbols?

Normally the winning combinations of symbols go from left to right. Consecutive symbols do make a winning payline. Having said that there are exceptions as every video slot has also different images/symbols that will give players bigger prizes.

Some Wild symbols can be a substitute for the normal symbols. They can contribute to creating a winning combination. You can also find that there are multiplier attached to the win. A Wild icon, for instance, could double or treble the win.

The Scattered symbol will pay out if you hit two or more in any position in the reels. If you are lucky enough to hit three or more Scatters on the reels you will trigger a special bonus feature. This will reward you with a special bonus cash prize. Again this totally depends on the rule of the online slot you are playing and might vary.

What are the Bonus Rounds in the online slots?

So you are playing at a real cash online slot. You are lucky enough to get 3 Scatters or ‘Bonus’ icons on the reel. At this point, you would normally get Free Spins as a bonus. This is the most common bonus round in an online slot machine. In those free games, you can win anything from 3 to 50 free spins (that will be done automatically by the computer). If you will be able to hit a further three Scatter icons during the free spins round than you will win more freebies.

What is the Pick’em bonus?

The Pick ’em Bonus round will start when you hit three Scatters. Normally you get taken to a different game screen where you will need to choose from a selection of symbols. Each of them will reveal a different prize or multiplier.

Normally the icons that you will find there will follow the theme of the slot (for example in an Aladdin-themed slot you will find the treasure chests and so on). You will need to continue to pick icons until you get the ‘Collect’ icon. At this point, you get back into the online slot game screen. Your win for the total bonus round will be collected and added to your bankroll.

What is a Click Me Bonus?

If you get three relevant bonus symbols on the reels simultaneously you will trigger a Click Me Bonus. In this case, you will simply need to choose from three icons on the reels to reveal a cash prize.

What are other bonus available?

There are also other bonuses available in an online slot, however, those tend to vary depending on the game. Some pretty common are:

Cascading Reels also known as Avalanche Reels

This is a very interesting feature where a winning combination disappears from the reels. It is substituted by symbols above that move down and take their place. This means that you have more winning combos. It is a very entertaining experience.

Expanding Wilds

This can appear on 1 or more reels. It will expand so that it will fill an entire reel. By doing that it will make the entire reel Wild. Sticky Wilds will stay in their positions on the reels but the rest of the symbols will spin around them.

Other bonuses are included in some of the big-money slots. They will have some interactive bonus features where your skills will be tested. This could be a battle sequence or for example a puzzle round. In some online slots, players can earn prizes which are based on their performance.

What are RTP and RNGs?

RTP and RNGs are very important acronyms that all online players should be really careful about.

RNGs (Random Number Generators)

The Random Number Generator is particularly important. This is because it will determine the payout percentage of the real money slot game. To ensure a fair game that percentage is audited by a third party authority. This is a minimum percentage that casinos payback to players.

The Random Number Generator works in the same way both in the online roulette and in the blackjack games. Behind those games, there is a fair software that ensures responsible and random events.

Return To Player (RTP)

The payout percentage is called Return to Player (RTP). It does change from game to game and also from developers and developers. In traditional casino slots this is normally around the 80-90% mark. This increases significantly for online slots and even more for new mobile slots. To better understand this let’s make an example. If a slot has a 95% RTP it means that out of 100 coins, 95 will get back to real cash slots players over time. The rest is the online casino margin.

How to find the best online slots sites?

So now that you know a lot more about online slots you shouldn’t jump immediately into the first online casino you come across. It is important to take some time to read up which one are the best slots, the best roulette and generally the best casino games out there.

CasinoBiggestBonus.com is going to help you massively in this task.  We have reviewed all the best online slots around. We are therefore able to provide you independent feedback. With those ammunitions, you can make an informed decision when choosing the best online slots site. Below are some guidelines when going over this task.

1 – Select a number of online slots sites and then visit them

Remember if you get to a bad casino and you burn your money without having fun nobody is going to give those back to you. It is your money you are investing in. For this reason, it is important to spend those wisely. You need to have the best gambling experience you can have. In order to do so, you need the best casino sites available.

By looking around our reviews you will see that some sites have lots of slots games while others just a few. Some online casino does offer you the opportunity to try out these games without having to give away your personal information. So it is important to look around a bit before making the decision. After all, the industry is big and there is lots of competition.

You need to find the online casino that best fits your taste. For example, if you are looking for Progressive Jackpot slots you want to make sure that you pick the online casino that has more of those and so on.

2 – Evaluate the welcome bonus and try to get the best deal

You only get the welcome bonus once so it is important that you make every effort to get the best deal. Here at CasinoBiggestBonus.com, we are consistently looking for the best welcome bonus deals on your behalf and you know what is the good news?

The good news is that there is a huge competition with lots of online casinos available. This means operators are competing for players. They, therefore, have the tendency to offer an increasingly attractive welcome bonus for players that have just signed up.

Not only the welcome bonus is bigger and bigger. The playthrough requirements are getting more relaxed. For this reason, a good strategy is to try out few online slots sites while using the free money that the casino is giving to you!

3 – Make sure the online casino allow you to play everywhere and anytime

Playing online slots nowadays means that you should have the opportunity to enjoy gambling while on the move. You shouldn’t commit to an online casino that doesn’t have the smartest technology for games. You would expect they will provide you with all singing and dancing mobile sites and apps. Those will allow you to play a full range of games on any smartphone or tablet available in the market.

If a casino doesn’t give you a good mobile slots experience than you should switch to another one. No point wasting time really!

4 – Security and fairness

It is really important that you pick a casino that will ensure you will have a safe experience. If you aren’t sure just check our list here at CasinoBiggestBonus.com. We do only feature those casino sites that have an eCOGRA seal. This is the authority that regulates sites and also audits their games to make sure everything is fair.

Picking with the best online slots sites will make sure that you will be playing a fair game. You will also have peace of mind that the money you have deposited is 100% safe.

5 – best customer service

When playing an online slot you want to have fun. There is nothing more irritating than hitting a jackpot on an online slot and than suspect that something is wrong with the playout or the software.

This is the reason why having the right qualified customer service is really important. The best online casinos will give you professional 24/7 customer support. In this way, you can resolve every problem. You will get answers to your questions at any time and without delays.

What are the best tips to improve your play?

If you think online slots is just about slamming buttons in an angry way like you see in a land-based casino then you are on the wrong path.

There are so many different slots on the web. Each of them has a slightly different feature. This allows a number of strategies to be implemented. With such a wide variety of themes and betting available it can also be difficult to pick the online slots site that can make you money in the long-term. Below are some tips on how you can improve your slots play from our experts.

1. You should bet the Max

Yes, this is rather counter-intuitive but it tends to work for online slots. As long as you have the money available you should pick the total number of pay lines available with the maximum coin bet. Remember online slots it is a game of probability. By selecting more pay lines will give you more chances to win.

Not only that, but the opportunity to trigger a very lucrative bonus will be also higher. Forget the classic 9-payline slots! You should be aiming for the 20-30 payline games. This is because ultimately you will have better chances to win.

2. Consider carefully the RTP

As mentioned the RTP is a clear indication of what you can expect from the software that runs the online slots. Before starting to play, check that the paytable for the RTP% is supplied. Ideally, you will want something over 95% if possible. Some online slots out there do not even reach 91%. This means that unless you are particularly attracted by a slot theme you should be looking for higher payout games.

3. Don’t Focus only on One Game

It is important that before you start to play online slots you select a number of games and stick to them. Normally you should have a portfolio of 3 to 5 games with the following mix. One should have good free spins bonuses, one should have a good progressive jackpot, one with plenty of Wilds like Sticky and Expanding Wilds and another with a low-variance game.

If you alternate between those type of games you will get a better view of the performance of each of them and also you will keep things fresh.

What are the different types?

As we have seen the online slots have evolved so much in the last few years so let’s take a look at the different types.3 reel slot

3 Reel – Classic

Even if you have never walked into a land-based casino or played at an online slot you will be familiar with the 3 reels/classic slot. The Classic slots represent the slot machine that has been populating the land-based casinos in the last 30 years. They have 3 reels as the name suggest, minimal pay lines and have classic symbols like BARs, melons, cherries, and bells. Nice but if you keep playing those you are a thing of the past!

5 Reel

The vast majority of today’s online slots are 5-reel games that have 3 or 4 rows. Those are more exciting as they do allow for lots more pay lines. In a 5-reel slot, 20-payline game is the standard.

3d video

Some slots have very good animation, interactive graphics and very detailed and expensive intro sequences. Those make them very close to a modern computer game. Some online slots players might argue that the animated sequence is a bit too long when you hit a winning combination but with computers and tablets that are consistently improving this trend will continue and after all it adds to the entertainment.

1,024 ways

Those slots are high variance but in this case, you don’t have to select pay lines as you automatically bet on all 1,024 pay lines available. The bet is normally 30 times your coin size and the winning combinations are evenly distributed.

234 ways

Those are similar to the 1024 ways slot with the difference that those slots have 243 possible pay lines.

Progressive Slots

the progressive slots are the ones that are offered by the best developers. When you play a progressive slot part of your bet will go towards a jackpot which is spread across every online casino that is featuring that game.

To hit a progressive jackpot you would normally bet the maximum amount and as you can imagine are rare and expensive to hit. You can win progressives jackpot via a bonus round or it could be triggered randomly. The highest progressive jackpot so far was a $22,974,400 and was won by a Finnish player back in 2013 in an online slot, Mega Fortune.

Mobile Slots

As the mobile trend grows and grows many developers are re-launching popular slots and making versions which are tailored for the new generation of smartphone and tablet. They will offer similar features, bonus rounds, and a jackpot as the online version but the buttons and the game screen will be the difference in appearance and will better fit the different devices.