This casino is not approved by VegasSlotsOnline!

This casino, having been independently reviewed by our experts, is not recommended or endorsed by VSO. We strongly recommend visiting a VSO approved casino which has been tested and proven fair whilst offering a great selection of products, services and customer rewards.

Here are the online casinos our experts recommend:

Pub Casino

Get 100% up to £100 

Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5. Eligibility is restricted for suspected abuse | Skrill & Neteller deposits excluded for welcome bonus | Cashback when offered, applies to deposits where no bonus is included | Cashback is cash with no restrictions. Full T&C

Lottomart Casino

Get 100% up to £200 + 100 Free Spins

New customers only. £10 min deposit. £100 max match. 50x wagering. Game eligibility & contributions vary. 10p to £5 bet range. £500 max redemption. New players only. Limited time offer. Valid 7 days. 18+. Play Responsibly. Terms apply.

Fever Slots Casino

Get up to 500 Free Spins

New players only, £10 min fund, 65x bonus wagering requirements, max bonus conversion to real funds equal to lifetime deposits (up to £250) full T&CS apply. 18+. Play Responsibly. 

Visit 99 Slot Machines Casino and get your Welcome Bonus

5000% UP TO $20

99 Slot Machines Casino

99 Slot Machines Casino

Player Complaints Make 99 Slot Machines a Bad Bet

Players from United Kingdom not accepted

blacklistedVSO Blacklisted

Casino Welcome Bonus

5000% UP TO $20

Casino:99 Slot Machines Casino
License:Curacao e-Gaming Regulatory Authorities
Compatibility:Windows, Mac
Support:Chat, Email, Phone


  • Realtime Gaming Software Provides Excellent Selection of Slots and Other Games
  • Large Bonus Offers Come With High Wagering Requirements and Low Withdrawal Limits
  • Few Deposit and Withdrawal Options for American Players to Choose From
  • Many Player Complaints Related to Delayed or Missing Payment of Winnings

99 Slot Machines Casino Review

Whether you’re counting how many problems you have or the number of red balloons you see floating by, the number 99 has long been used as a general synonym for “a lot” of something. That’s often something online casino players like to hear, since having a big game selection is always a plus, which probably explains how 99 Slot Machines Casino got its name. The site – which actually appears to have fewer than 99 slots, but more total games than that overall, according to their own tallies – does have a large collection of titles for gamblers to try, so why not make that clear from the moment someone sees their name?

Unfortunately, there are also some significant downsides that come with this operator. Like many of the other sites that are often associated with them, such as Plenty Jackpots, it doesn’t take a very thorough search online to see a mountain of complaints against the company. And unfortunately, this site hasn’t exactly done much to clear its name in the gaming community.

Real Games from RTG

99 Slot Machines is a US-facing casino site, and it uses one of the most popular software options found in the United States and other grey markets. That would be the platform provided by Realtime Gaming, a developer better known to many players as RTG. This is a firm known for having a diverse game selection that can carry an entire gambling site on its own, and while their games can sometimes be seen alongside those of other developers, RTG is flying solo in this case.

It’s hard to overstate the importance this studio has had in the history of online gambling, and much of that is due to their historic slots collection. In particular, most players are familiar with their Real Series of games, a group that consists of dozens of different machines that all look somewhat similar, but have all been customized with art, sound, and gameplay elements to cover a variety of themes and playing styles. There’s no doubt that these games are showing their age, but they still do a great job of making up the core of a site’s slots collection.

Of course, these Real Series titles have been supplemented by plenty of newer games over the years, and the entire RTG lineup remains solid, if not one of the more spectacular collections in the industry. Among their numerous titles, these are a few of the more notable games:

Aztec’s Millions

• Caesar’s Empire

• Diamond Mine Deluxe

• Jackpot Pinatas

• IRIS 3000

• Shopping Spree

• Lion’s Lair

• Pharaoh’s Gold

• Cleopatra’s Gold

• Red Sands

Everything on the Floor and More

One thing that we can definitely say in favor of this site is that few players will accuse them of having a shortage of games. If you have a favorite that you’ve played at a live resort, we’re almost certain you’ll find it here, along with a few unique games that are only found in the online world.

Let’s start with the table games suite, which include everything an experienced casino gambler could want. Of course, there are several versions of blackjack, but you’ll also be able to play Three Card Poker, Pair Gow Poker, Bacarrat, and much more. Roulette and craps are also present, though they are strangely enough hidden away under the specialty games tab. Some of the table games in the collection include:

• Blackjack (Multiple Versions)


• American Roulette

• European Roulette

• Craps

• Vegas Three Card Rummy

• War

• Red Dog

• Let’em Ride

• Caribbean Stud

Video poker is another clear strength of the RTG package. More than 15 different machines are available here, including some titles you very well may never have played before unless you’re already familiar with this software. Some of the best titles are:

• Jacks or Better

• Deuces Wild

• Pick’em Poker

• 7 Stud Poker

• Sevens Wild

• Double Jackpot Poker

• Bonus Deuces Wild

• Aces and Eights

There are also a handful of other options lumped in under the category of specialty games. These include Sic Bo, a variety of scratch cards, and bingo-based games.

Little Deposits Equal Big Rewards

99 Slot Machines has a somewhat unique way of structuring its sign up bonuses, offering players a very large amount of money to play with in the casino at the cost of simultaneously having to deal with some rather harsh restrictions. On each of your first three deposits, you’ll be welcomed to make a relatively small deposit and, in turn, receive a significant chunk of funds that can be used in the casino.

Here’s how it breaks down. On your first deposit, you’ll only need to put $20 into your account in order to claim $980 in bonus money. Your second deposit of $25 will earn you another $425, while your third deposit only needs to be $30 in order to get a free $270. In total, that’s $75 in deposits for $1,675 worth of bonuses.

As you might expect, such generosity comes with some significant catches. You’ll have to complete rather large playthrough requirements on each promotion: 120x your deposit and bonus total on the first bonus, 60x on the second, and 30x on the third. You can play any slots you like to clear these deals, but no other games are permitted.

Most importantly of all, there is a maximum withdrawal of $200 on each of these promotions. This is becoming more common in online casino bonuses, but it’s still not something we enjoy seeing, as it significantly lowers the value of these deals: not so much because it will effect most players, but because it makes it impossible to get lucky and cash out a huge win.

First Deposit$205000%120xClaim Bonus
Second Deposit$251000%60xClaim Bonus
Third Deposit$30900%30xClaim Bonus
Terms & Conditions Apply. New Players Aged 18+. Please Gamble Responsibly.

Banking Methods

The banking options available to players are rather thin here, especially if you’re playing from the USA. When it comes to deposits, you can choose from credit cards or a couple of e-wallet solutions; however, the wallets are not available to Americans. Your choices include:

• MasterCard

• Visa

• Click2Pay

• Neteller

Withdrawals are similarly a bit tougher in the United States than elsewhere in the world. While international players can use those same wallet programs (Neteller, Click2Pay) in order to withdraw their funds, Americans can only receive their money by having a check mailed to them. Wire transfers are also noted as an option, but the site says that they are not currently available to players.

It’s also worth noting that the withdrawal times here are infamously poor. We’ll talk about this a bit more in our wrap up at the end of this review, but there has been great criticism from many players of the length of time that it takes to receive money from this casino, with some players saying they’ve waited months or longer without ever seeing their winnings. Even the times claimed by the operator aren’t inspiring: they say that 2-3 days is typical for verifying a withdrawal, with waits of up to five days being normal for check cash outs – and that doesn’t include weekends or the time it takes for you to actually receive your money.

Several Software Options

As is common with RTG casinos, there are two main ways to access the games at 99 Slot Machines. First, there’s the instant play version of the site, which has become the industry standard in recent years. Anyone can use this platform simply by visiting the website in any modern web browser, regardless of what operating system they are running. Just log into your account and you can play all of the games in the same browser you use to surf the Internet.

If you prefer having a casino right on your computer, there is also a downloadable client that can put the entire collection of titles right on your desktop. This software is designed to be used in Windows operating systems, and while there may be workarounds for Mac or Linux users, they are likely to find it far easier to simply sign into the no download version of the casino.

Finally, it is also possible to visit a mobile-optimized version of the casino’s lobby simply by navigating over to on your smartphone or tablet. It’s hard to say just how much specific work went into the mobile version of the site, but it seems to work well-enough on popular devices like the iPhone, Android devices, and the iPad.

Questionable Reputation Raises Concerns

By most metrics, 99 Slot Machines would rate as a fairly respectable casino site. It’s not anything spectacular, of course, but everything works more or less as it should, and in the US-facing market, that alone is enough to at least make an Internet casino worthy of consideration.

However, there are question marks that crop up when you start looking into the reputation of this operator. The Internet is littered with complaints about their practices, including many players who have never received winnings that they believe they have earned fairly. Customer service has been described as poor at best, and even worse, we’ve seen no evidence of management attempting to rectify – or even defend itself against – these accusations.

It is this type of behavior that has seen 99 Slot Machines be blacklisted by many reviewers. No matter what a gambling site offers, nothing matters unless you can trust the owners to pay out when you win. And since there are plenty of other fast paying sites that are reputable, honest, and happy to give their customers what they are owed, we cannot recommend playing here to our readers.

You Might Also Like

Real Money Slots

Real Money Slots UK

Discover the best real money slots of 2024 at our top UK casinos today. It’s never been easier to find your favorite slot games.

New Casinos

New UK Casinos

Sign up with our recommended new UK casinos to play the latest slot games and get the best welcome bonus offers for 2024.

Best Online Casinos

Best UK Casinos

Our best online casinos make thousands of players in the UK happy every day. Sign up and get a top gaming experience in 2024.

No Deposit Bonuses

No Deposit Bonus UK

Claim our no deposit bonuses and you can start playing at UK casinos without risking your own money. Sign up, play, and be in the chance to win.

Our Favourite Casinos

By subscribing you: consent to receive bonus offers and other emails from VSO; confirm that you are of legal age to gamble in your country of residence; and acknowledge that you have read and accepted our privacy policy. You can unsubscribe at any time. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

You've Won a Free Spin

Join Lottomart now and get 100% up to £200 + 100 Free Spins

Claim Bonus