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What Are Slot Games?
Slots are one of the most popular variations of online casino games which involve spinning reels that incorporate a variety of symbols. Each one comes with a different theme build into it, with many popular genres being available. They include Egyptian slots, pirate slots, horror slots, fairytale slots, and more.
Players select a bet that is suitable and then spin the slot’s reels. Different real money online slots come with different numbers of reels to spin, but the idea is to try and match at least three symbols on a payline running across those reels. Each slot also has its own number of paylines to win on.
You can usually play slots online for free in demo mode, as well as for real money whenever you’re ready. Gameplay in these releases is more so about pure luck, rather than any kind of gaming skill. That’s why it is ideal to play them in demo mode first, to see how they work for you and whether you enjoy them before risking your own money.
How Do We Review Slot Casino Games?
At CasinoReviews.net, we have a team of experienced reviewers who put an effective rating process into effect when picking the best slot casinos and games. Only the games that pass our criteria will be recommended as ideal for playing. It’s our aim to ensure you know about the very best options in terms of quality, special features, RTP rate, and more. Below, you can see the criteria we look for when rating online slots.
Quality of the Games
Each of the best slots online should provide a high-quality experience, in terms of its theme, betting range, standard of graphics and animations, gameplay, and so on. Thus, there are many high-quality developers we recommend as a result.
Average Game Payout and RTP
There is an average RTP rate of 96% for video slots, and we usually highlight those that feature levels above this. Of course, we also consider the average game payout of each slot to ensure you stand to win a good amount from your gameplay.
Slot Features
Inbuilt slot features come in various forms, from special symbols to bonus rounds and free spins. The slots with the top special features will always stand out and therefore will often be recommended as ideal for playing.
Is There Demo Play?
The best online casino slots often come with a demo mode as well, in that case you have the option to play for free before you risk your own money on it. That’s why we always look for the slot games that are available in demo format and ensure all features are available this way, too.
Betting Range
We want to know that there is a good betting range available in a slot machine. This way, it stands to cater to different types of gamers, whether you have a smaller bankroll or a higher one.
Volatility
Slots are usually divided into three levels of volatility – low, medium and high. We always check into this to find the slots that can appeal to all types of players and will always highlight this when reviewing the games.
Online Slots Casinos to Avoid
There are some online slot sites you should definitely avoid joining. They received the lowest rating from us and have frequently received negative responses from users. Their low-level ratings have been determined through reviews at reputable platforms, and we have verified that opinion through our own in-depth tests.
Below, you will see some of the casinos we don’t recommend joining due to their questionable status. They have all failed to meet our high-level criteria in one or more ways.
Types of Online Slot Games
Top online slots don’t just sit in one single category. There is, in actuality, a huge selection of slot types available to play. Each different type operates in its own way, meaning there are different rules associated with different kinds of slots. In the same vein, different types of payouts are included in different slot releases and a variety of special features can be attributed to these games.
Whether you prefer classic machines or modern video games, there are countless options to play online slots and find your favorite.
Video Slots
The alternative to classic slots, video slots tend to feature five or more reels, include more paylines or ways to win, and also incorporate one or more special features. Some of the best themes serve as the foundation for video slots, with many of them becoming popular because of their themes. Whether that’s an Egyptian theme, an explorer theme, an underwater theme, or anything else, these games remain the most popular at online casinos.
There is a huge number of video slots available to play online, and I have a large group of favorites myself. It’s the addition of special features to video slots that adds to the appeal for me. Free spins are often present in them, with wild symbols, scatters and even bonus game rounds being available, too. Make sure you read the game details before playing to discover the RTP rate, volatility, and so on.
Classic Slots
Those gamers who want something a little simpler to play will love classic slot machines. Often featuring just three reels and minimum paylines, they are ideal for newcomers to start out playing. Usually, they don’t feature any special feature rounds like video slots do. Instead, standard symbols and perhaps a wild and/or scatter symbol will be included in gameplay. They also tend to come with very simple base themes built into them.
There are those times when I tend to turn to the simpler classic slot games, just because I want something different that isn’t too hard to get the hang of. Traditional slots like these, featuring fruit symbols and the like, provide that. I always recommend them to anyone who is new to online slots as a starting point. They’re easy to understand and then proceed on with from the basics.
Progressive Jackpot Slots
The best online slots sites will always host a selection of progressive jackpot games. These games give you the chance to win higher amounts, with the progressive jackpot total(s) increasing every time someone places a bet on the slot. It is this reason that enhances their popularity with gamers – after all, who wouldn’t want to win a massive, increasing jackpot payout? This doesn’t take anything away from the slots in terms of standard features, either. Progressive jackpot slots remain entertaining on various levels.
I think progressive jackpot slot games can indeed provide a high level of entertainment. Just remember that there are no guarantees in slots, and in general, progressive jackpot releases tend to have lower RTP rates than standard slot releases. Play these slots with the aim of having fun, not the aim of winning a big reward.
Megaways Slots
Megaways is a mechanic that has been incorporated into many slots from many different developers. First introduced by the Big Time Gaming developer for its games, the company soon offered it to other brands. In Megaways slots, you get to experience a different number of ways to win on each spin. This can often be up to 117,649 ways. It is for that reason that such slots have become popular, and in many instances, the inclusion of cascading reels after forming a win has bolstered that popularity.
Megaways slots are a lot of fun – in fact, they provide some of my favourite games to the casino world. There’s something thrilling about seeing different ways to win come into effect on every spin. Plus, anyone who knows me, knows that I love a good slot with cascading reels. Make sure you place appropriate bets on Megaways slots, as you may find that they often operate as high volatility releases.
Penny Slots
Want to play an online slot but you only have a low bankroll? Don’t worry. Penny slots will cater to you. As their name suggests, you can wager on these games for as little as a penny or a cent. They usually have customizable paylines, with the lowest bet being possible across a single payline. Yet they provide their own level of entertainment and, contrary to some beliefs, are not specifically relative to classic slot games.
Penny slots have proved to be popular with those gamers who have lower bankrolls and don’t want to be restricted to placing a minimum bet of $0.20, for example. Don’t be fooled into thinking they won’t provide payouts at this base level, either. Penny slots still have the chance to reward you in the same way as any other slot.
Leading Online Slot Game Providers
Here, we will discuss the most popular online slot game providers and highlight what makes them well-liked among gamers. Each one offers something different, despite the fact they all place a focus on creating enjoyable online slots. The point is that the best slots casinos host games from these brands, which have helped them become as known as they are. Below, you will find see further information on these developers.
Featuring over 700 slots within its portfolio, Pragmatic Play is known for its attention to detail in its releases. The developer presents players with exciting themes, special features and enjoyable RTP rates in its games.
Catering to the best slots sites and offering their services to more than 60 countries, Play’n GO has grown considerably over the years. Known for its popular Egyptian- and Norse-themed slots, the brand has become popular due to its dedication to providing high-quality entertainment.
This brand has occupied the software of many other companies and has expanded its catalogue significantly recently, thanks to its acquisition of Microgaming’s games. It offers thrilling slots, exciting payouts and special features within.
One of the longest-running software developers in this list, NetEnt has been creating high-quality games since the mid-90s. It has numerous well-known slots within its selection, has introduced various innovative features and even offers a series of progressive jackpot slots.
One of the developers to release a large number of slots every year, Blueprint has swiftly risen to become one of the best in the world. The brand is based in the United Kingdom and is part of the Merkur Group from Germany. It has a range of exciting online slots for the global market.
Top 5 Most Popular Real Money Slots
There is a wealth of online slots available to play, with each one featuring its own theme, payouts, technical details and special bonus perks. Various game releases have joined the ranks of the best slots to play online.
When you play any online slot games, it’s vital that you know what you’re getting involved in. This is why we recommend playing in demo mode first, which is a free play version. Most games can be accessed this way at online slots casinos.
If you’re playing a progressive jackpot slot, the amount winnable within that jackpot cannot be accessed via free play, though. The likelihood is that any jackpot bonus game to put you on course for winning this won’t be accessible in a free play version.
Here is a closer look at 5 of the best slots to play online for real money, as rated by us:

Mega Moolah from Apricot
Mega Moolah was released in 2006, initially under the Microgaming banner and now serving as part of the Games Global brand. It has proved to be the most popular progressive jackpot slot from the brand and perhaps within the industry. It’s a five-reel, three-row game with 25 paylines and the chance to experience a free spins round. Of course, the progressive jackpots are its prime feature, having paid out the biggest wins over the years.

- Biggest paying progressive jackpot
- Enjoyable base theme
- Thrilling free spins round
- Low RTP rate of 88.12%
“Mega Moolah is a fantastic game still to this day, despite being released almost 20 years ago. The African safari theme makes for a great basis to build upon, with free spins and, most important, the progressive jackpots offering plenty of appeal.”

Cleopatra’s Gold from RealTime Gaming
A game surrounding the wonders of ancient Egypt, Cleopatra’s Gold was released in 2015, introducing players to its 96.37% RTP rate and medium-high volatility. Five reels and three rows make up the layout of the slot, with bets of up to $500 per spin being possible. As you play, you can experience scatter and wild symbols, with the former triggering the free spins bonus when three land anywhere. Turning all five reels gold during this round wins the progressive jackpot!

- Stunning graphics and animations
- Popular base theme
- Exciting jackpot possibility
- Volatility can hit high at times
“There are many games using Egypt as their base theme, although Cleopatra’s Gold is one of the more inviting releases to play. High-quality graphics lead the way, with the progressive jackpot total and free spins round involved making for in-game thrills.”

Blood Suckers from NetEnt
Netent has released a slew of the world’s most popular online slots, with Blood Suckers from 2013 being one of them. Though a sequel was launched five years later, you can’t quite beat the original. It comes with a low volatility level, a 98% RTP rate, and the chance to trigger a fantastic bonus game. Free spins are also included alongside in this vampire-themed game.

- Bonus ‘Pick Me’ round to trigger
- Fantastic theme, well-executed
- Chance to customize active paylines
- 98% RTP rate
- Maximum win on lower side
“Anyone who loves vampire slots will love Blood Suckers by Netent. The developer reveals how it has risen to the grand level it has today when you play games like this one from 2013. The bonus ‘Pick Me’ round is expertly done and makes for a great extra addition to the slot.”

Game of Thrones from Apricot
Everyone loves the Games of Thrones TV series, right? Without it, this online slot from Games Global wouldn’t exist. It’s a slot that features 15 paylines to win on across its five reels, and it was released in 2014. Spinning the reels allows you to experience wild symbols and scatters, with a bonus game round included in the shape of free spins. The gamble feature included is a bonus perk in its own right, too.

- Branded slot based on Game of Thrones
- Medium volatility level
- 96.40% RTP rate
- Only features 15 paylines
“It’s always great to see branded slots come to life on your screen. Game of Thrones bases itself on the television series of the same name, and it’s a theme that really works. Remember all your favourite houses and the map of Westeros as you spin the slot’s reels and try to win your own gold.”

Neptune’s Gold from Swintt
In 2018, Swintt took you under the sea where mermaids dwell alongside other marine life, such as sharks and octopi in Neptune’s Gold. It’s a fascinating slot release, providing 20 paylines to win on and a maximum bet of $200 per spin. During gameplay, you can experience expanding wilds, a scatter symbol, a free spins round, and more. What may stand out most about it is the 97.02% RTP rate, which is fantastic.

- 97.02% RTP rate
- Thrilling expanding wild symbols
- Great betting range
- High volatility level
“Neptune’s Gold may be one of the lesser-known online slots, but that doesn’t make it less ideal to play. The high level RTP rate, the great betting range and the enjoyable base theme all combine to ensure you have a wonderful gaming experience.”
Real Money Slot Games vs. Free Play
Whether you play online slots for real money or opt for a free play demo version, you’ll always get entertainment from them. Of course, there are some key differences between these game versions. The primary difference, and most noteworthy one, is that in demo mode, you cannot win and withdraw real money. That is only possible within real money slot games.
The best online slots sites will always provide both options, real money or free games. The demo variations are fantastic for practicing, getting to know a slot and testing gambling strategies out on, as you aren’t risking your own money on them. If you’re playing a progressive jackpot slot this way though, you won’t be able to experience anything to do with the jackpot payouts.
If you’re new to the world of slot gameplay, then the demo free play versions of games are great ways to become accustomed to them. They are, after all, free. Regardless of which option you choose the odds of winning on each spin remain the same. That’s because the RTP rates tend to stay the same and so does the volatility within games. Therefore, the frequency of wins within demo versions is the same as how frequent the real money versions pay out.
Real Money Slots
- Chance to win real money payouts
- Opportunity to win progressive jackpots
- Wider range of games available
- Chance of losing real money bets
- More risk of becoming addicted
Free Play
- Ability to practice playing risk-free
- Ideal for newcomers to experience
- Test out betting strategies
- No opportunity to win anything real
- Some features may not be available
- No opportunity for progressive jackpots
How to Play Slots
There are certain basic rules behind playing online slot games that you need to know. These are simple to learn and understand.
The idea behind slot gameplay is to place a bet, spin the reels and try to form a win across one or more of the paylines or ways to win. Always view the paytable of a slot before you spin the reels, so you know about the symbol payouts, how to trigger special bonus features, and so on.
Make sure you choose an online slot because you like how it looks and the features within. There are various slot themes, so turn to one you know you will enjoy on this front. Don’t simply choose a slot because it includes huge jackpot potential. There is nothing that will guarantee you a massive win in the games. Your gaming experience should be about having fun first and foremost.
The best strategy for playing slots online is to select smaller wagers by breaking down your bankroll into units of around 2-3%. This is then the amount to bet per spin. Build your balance up slowly and don’t underestimate the importance of bankroll management.
Wild symbols can land in slots, substituting for all basic symbols, while scatters can land anywhere and provide a payout. Meanwhile, you may be able to trigger free spins in a game, offering a set number of free rounds to benefit from. It is often the case that this round activates from landing three or more scatters on the reels. The same is true of bonus rounds.
Sign in to your existing account or create a new one if you’re a first-time player.
Deposit money into your casino balance using your preferred payment option.
Head to the game lobby and select the slots category.
Browse the available slot games and pick one that interests you.
Set your wager, customize the paylines if needed, and hit the spin button to start playing.
Real Money Online Slot Tips
There are certain methods and tips to follow when playing online slots for real money. These guidelines are there to assist you with getting the most out of your slot game experience. Below, we have put together some advice on things to remember – techniques for improving your odds of winning on the different slots you play. We’ve also got some information on the most common mistakes to avoid committing during your time playing.
Manage Your Bankroll
Set yourself an appropriate bankroll and split this into smaller units per bet. Make sure the bankroll is a balance you can afford to lose before you deposit it.
Use Bonuses
If an online slot site offers casino promotions, then use them. Whether that’s bonus funds, free spins or anything else, they can assist you with having a fantastic experience. In many instances, they extend your gaming time and offer more opportunities for wins.
Choose Games with Higher RTP
Those slots with a higher RTP rate are likely to return more of your bets to you in winnings over time. Thus, if you’re in it for the long-term, it’s better to choose a slot with a higher RTP rate to get more back from it.
Avoid Chasing Losses
If you lose a spin, then don’t increase your wager to try and capture back what was lost in that round. Either maintain the same bet level for the next spin or lower it. Chasing losses can lead to a deadly spiral of huge losses.
Choose Reputable Casinos
We only recommend the best slot casinos here, and we advise that you join one of them for the best experience. Selecting a site that doesn’t have a good reputation can lead to problems for you later.
Use Low Bet Games for Practice
If you don’t want to play a free demo version of a slot, then select one offering low bets to practice on. This way, you won’t be risking too much money.
Top 10 Best Payout Online Slots
If you’re looking to play the online slots with the best payouts, then you’re in the right place. That’s because we have put together a list of the top 10 games providing the best payouts. Our experienced team has researched and tested hundreds of online slots to determine these as the best paying options. In theory, those games with higher RTP rates should provide more payouts over time.
Rank | Slot Game | RTP | CTA |
---|---|---|---|
1 | Ugga Bugga | 99.07% | |
2 | Book of 99 | 99% | |
3 | 1429 Uncharted Seas | 98.60% | |
4 | Marching Legions | 98.12% | |
5 | Blood Suckers | 98% | |
6 | Money Cart | 98% | |
7 | Money Cart 2 | 98% | |
8 | Jokerizer | 98% | |
9 | Starmania | 97.87% | |
10 | Blood Suckers Megaways | 97.66% |
References
- International Association of Gaming Regulators (IAGR) – IAGR is a global network of gaming regulators who collaborate to improve regulatory standards and practices.
FAQ
What Is the Best Online Slot Game?
The best online slot game for one player may not be the same for another. If you’re looking at the best slot for payouts, you will want to play games like Ugga Bugga, Book of 99, 1429 Uncharted Seas, and others.
Can I Play Slots Online for Real Money?
Yes, you can play real money slots online, with many casinos providing such games. Just choose a reputable casino, sign up and make a deposit, and then visit the game lobby to find a favored slot.
What Is the Most Successful Slot Game?
The Starburst online slot released by NetEnt in 2012 is arguably the most successful of all slots to be released.
It’s a simple game with a space theme and continues to be popular with players.
Do Online Slots Really Pay Out?
If you’re playing at a reputable online casino and accessing games from top developers, then you will experience payouts from them with responsible gameplay.
Try to choose a game with a good RTP rate and volatility level.
Can You Actually Make Money on Online Slots?
While it is possible to make money playing online slots, this shouldn’t be your focus when playing them.
They should be played for entertainment purposes first and if you win money along the way, then great!
Do Any Free Online Slots Pay Real Money?
Free play demo versions of online slots do not pay out real money. They are ideal for players who don’t want to risk money on slot games, those who want to practice playing, and newcomers.
Only real money games pay out real money wins, though.