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How We Rate Betting Sites
Reputation
A site’s reputation reflects the relationship it has with its players. That’s why we speak with gamblers and industry experts to uncover every detail in our reviews.
It takes trust to deposit your real money online and we want you to know, if we trust a partner, so can you. This is why all sites must be legitimately licensed and regulated, as well as keeping your data safe with the best encryption technology.
A necessity of all online gambling sites is a range of secure banking options. From there, it’s imperative all sites provide high payout percentages with fast withdrawals and a fair RTP.
All our sites are expected to provide new players with a welcome bonus, as well as rewarding loyal players with bankroll boosting promotions. We also check for any unfair T&Cs, meaning you can bet with confidence.
Top sites will offer extensive customer support, which is why we review this rigorously. While we always encourage our users to get in touch, we understand the importance of having your questions answered efficiently and by a real person.
Whether you're playing online from your computer or mobile device or tablet, our top recommendations can match your lifestyle. A top online casino needs to be compatible with multiple devices, so you have the freedom to play wherever and however you want.
Whether through the range of games or sports to bet on, the option to play for free or even choosing between software providers, players must be provided with options when gambling online. Aside from this, we require all partners to meet a high standard with the graphics of their games and localization to accommodate for players from around the world.
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Vegas Slots Reviews

Types of Online Slot Games

When choosing which slot machine to play online, it pays to understand the variety of slot types available. The difference between two slot games can have huge consequences on your gameplay, jackpot amount, and your slot strategy.

To help players make the most of their gameplay, we’ve listed the different types of slot games our experts cover in their online slot reviews:

Free Slots
Free Slots
With free games, players can enjoy their favorite slot titles without risking any money. Free slots offer the same high-quality graphics and gameplay as regular games, making them perfect for players that want to try new titles or practice slot strategies.
Play Free Slots
Vegas Slots
Vegas Slots
The most popular slot machine games in Las Vegas have been given a virtual makeover. Vegas slots offer players the same titles they enjoyed in land-based casinos, but with improved graphics and in some cases extra bonuses and games.
Play Vegas Slots
Real Money Slots
Real Money Slots
With real money slot games, players can win big jackpots online. Bets can be as small as a penny for low rollers or total hundreds for high stakes slot players. All the top slot titles are online, and players can now enjoy these games on their mobileor desktop.
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Progressive Slots
Progressive Slots
Players can enjoy more chances to win big with progressive slot games online. Every time a slot player makes a bet in this slot game, it is added to a progressive jackpot until a player lands the winning combination.
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Sometimes these slot games can overlap; for instance, some online Vegas slot games will accept bets for as little as a penny. But it helps for players to know what type of game they are playing to better understand how the game operates and to improve their chances of winning. A player wanting the big jackpots found in progressive slots wouldn’t choose penny slot games to play.

Players can trust our slot game reviews to highlight the which game they are playing, along with tips on the best methods to increase their chances of winning.

Benefits of Online Slot Game Guides

Before pushing ‘spin’ on any slot game, it pays to read online slot reviews and slot game guides. These expert virtual handbooks tell players everything they need to know about a game before playing. Whether it’s improving slot strategies, finding the biggest jackpots, or even knowing which games to avoid − online slot reviews reveal all.

Here are just a few of the benefits of checking out slot game guides before sinking any funds into a casino site:

Discover essential information
Discover essential information
A paytable may list the RTP and paylines, but slot reviews tell you everything you need to know to land a win: the game’s variance, the size of the jackpot, even how to trigger bonus features. Speaking of bonuses…
Find more bonuses
Find more bonuses
Some online slot machines contain hidden bonus features in their games. Slot game reviews offer guides to all bonus features in a title, and even offer special casino bonuses to give their readers free gameplay.
Play with the best casinos
Play with the best casinos
Along with listing the best slot machine games to play, online slot reviews showcase the top casinos to its readers. As we’re an impartial comparison site, players can trust that we put their online security before anything else.
Play your favorite slot games for free
Play your favorite slot games for free
All our online reviews offer readers the option to play free slots before playing for real money. There’s no download or registration needed, so players can enjoy their chosen slot titles worry-free.
Improve your slot gameplay
Improve your slot gameplay
Every slot game guide includes top tips and advice to give players the best chance of winning big jackpots. Avoid making costly errors or playing with the wrong casino by reading our online slot reviews.

The Biggest Slot Game Providers

Game developers know players have high standards when it comes to slots. They want immersive graphics and music, entertaining themes, huge jackpots and lots of bonus games and features.

Little wonder then that slot game providers are always in strong competition with one another to create the next winning slot game. As a result, many slot players actively search for specific game developers to discover new slot games to play. These are just a few of the slot game designers mentioned in our slot game guides:

Bally
Bally
One of the earliest slot game creators to originate in Las Vegas, Bally’s titles are famous for their timeless game themes.
IGT
IGT
Williams Interactive is responsible for introducing gaming features such as bonus games to online slot titles.
WMS
WMS
Williams Interactive is responsible for introducing gaming features such as bonus games to online slot titles.
Microgaming
Microgaming
As one of the oldest suppliers of online casino game software, Microgaming has enjoyed big success with games like Mega Moolah.
Netent
Netent
This Swedish game developer prides itself on offering unique and premium online slot games to over 300 operators.
PlayTech
PlayTech
This developer has one of the largest selections of online slot games worldwide, particularly in the progressive slot game category.
Novomatic
Novomatic
With popular slot titles like Book of Ra on its resume, Novomatic’s games are known for their distinctive style.
Aristocrat
Aristocrat
This Australian slot game developer is known for creating games optimised for mobile devices.
Merkur
Merkur
While this game developer is famous for its classic slot game range, its experimental arm has produced ground-breaking slot features.
RealTime Gaming
RealTime Gaming
RealTime Gaming has made a name for itself in slots with its big, bold graphics and bonuses offering lucrative rewards.

How We Review the Best Online Slots

Our experts at Online Gambling evaluate every online slot game through a rigorous vetting process to ensure it offers players the best possible gaming experience. We uncover every detail in our search to bring you the best online slot games in our reviews. Players can rest assured that every guide to online slots is checked for:

  • 1

    Bonuses

    We check every slot game for its bonuses and rewards. Whether that is free spins, multipliers or cash prizes, players will know how to trigger these bonuses and whether they are worth their precious bankroll.

  • 2

    RTP and Variance

    The size of a player’s winnings depend on a slot game’s RTP and variance. Our experts find the games with the highest RTPs and the variance for each one, so our players know how often they should expect to win.

  • 3

    Gameplay Experience

    To hit the mark with our experts, a slot game must have an original theme and high-quality graphics. Our players want an immersive experience, so there’s no space on our website for boring slot games.

  • 4

    Mobile Optimisation

    Players want to enjoy slot games, no matter their location. Our reviews team checks that every slot title is optimised for mobile gambling, without sacrificing on gameplay experience.

  • 5

    Jackpot Value

    Every slot player dreams of hitting a jackpot. We find out the maximum value you can expect to win from a slot game, and how to win it. We want to give our readers the best potential chance of landing a big win, visit our how to win at slots page to find out more.

For deeper research into slots and gambling, see Yale University research which discusses casino gambling behavior and GAMSOC from Goldsmiths, University of London, showcasing a wide range of gambling studies.

Frequently Asked Questions

  • What should I look for in an online slot casino?

    Before committing funds to any online slot casino, players should first check that it is licensed and regulated by an independent authority. This means that the casino’s games are regularly assessed for randomness and fair play. Players should then check the casino site is compatible with their device, and that it offers the best slot games available. Finally, check that it offers competitive casino bonuses and jackpots to help extend your gameplay.

  • What is the best online slot machine site?

    The best online slot machine site will offer a huge variety of slot games, with fair RTPs and opportunities to win jackpots. It will also give players regular slot bonuses, such as free spins and bonus games, to reward them for their gameplay. Finally, the best online slot casino will not add any extortionate or hidden clauses for transactions for players.

  • What is the best online slot game?

    There are thousands of slot titles and slot categories to play online, and the best game depends entirely on the player’s preferences. For players looking for the biggest jackpot, Mega Moolah offers world-record-breaking amounts.

  • Are online slot casinos trustworthy?

    If an online slot casino is licensed and regulated by an independent third-body authority, then players can trust its gameplay. Bettors can find this information in the footer or ‘About Us’ page on any slot site. Alternatively, check casino reviews for real player testimonies and expert comments.

  • What are some of the slot features I should know about?

    Before spinning the slot reels, players should always check the paytable. This feature lists the RTP, paylines and bonuses they can land in the game. When playing a slot game, look for the wild symbol feature. This can help you hit more paylines and win real money. Finally, check for progressive jackpots. This feature appears in some slot games and gives players more chances to land huge jackpots.

  • Are online slots rigged?

    Players can trust an online slot game if the casino site they play with is licensed by a regulatory body. This information can be found on the online slot page in the footer. A slots player should also check the RTP of a game before entering any money, to ensure it offers fair gameplay.

  • Are online slot machines real?

    Online slot machines operate on a software system called random number generator (RNG). Just like spinning the reels on a slot machine, the RNG will produce millions of potential results per second in an online slot game. The system will then randomly choose one of the potential answers for the slot game to land on. The RNG recreates the randomness of a regular slot machine for online slot games, so players can rest assured they are receiving the same gameplay and chances of winning.

  • What is the most legit online slots casino?

    A legit online slots casino features its license and regulatory information on its website for players to inspect. If a casino site features this information, then players can trust its authenticity.