SlotMonster Casino

SlotMonster Casino sister sites logo

SlotMonster sister sites include Crashino.
The SlotMonster Casino sister sites are operated by Atlantis Interactive SRL of Costa Rica.

SlotMonster Casino ( is not covered by a UK Gambling Commission licence. 

Mr Play logo
100 Free Spins
+ £200 Bonus

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Over 18's Only. 35X WR. 1st dep only. 100% up to £50. T&Cs apply. #Ad
Queen Play logo
100 Bonus Spins
+ £200 Bonus

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Over 18's Only. New depositing players. Min Dep £10. 35x WR applies to match up bonus. 50x WR applies to spins. T&Cs apply. #Ad
Mr Mega logo
100% up to £50
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Over 18's Only. 35X WR. 1st dep only. 100% up to £50. T&Cs apply. #Ad
Spin Rio logo
£200 Bonus
+ 100 Free Spins

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Over 18's Only. New players only. 18+. Min dep £10. 35x WR. Spins credited in specific games and expire after 24 hours. T&Cs apply. #Ad
Plaza Royal logo
£200 Bonus
+ 100 Free Spins

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Over 18's Only. Min dep £10. 35x WR on match up bonus. Spins expire after 24 hours. Check site for full T&Cs. #Ad
Star Wins logo
Win up to £6,000
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Over 18's Only. 1st, 2nd and 3rd ever deposit: spin wheen and win up to 10X your deposit amount (£2,000 max bonus, 65x WR, max £250 bonus equal to lifetime deposits T&Cs apply #Ad

SlotMonster Casino Sister Sites 2024


Not holding a licence from the UK Gambling Commission means that you can’t offer your services to players in the UK. That means SlotMonster Casino ought to be turning players away if they have a UK IP address. The casino doesn’t do that, though, so UK players need to be aware that they have no regulatory protection if they play at this casino, and will have no legal recourse if they have a bad experience at the site and want to make a complaint.

With that disclaimer out of the way, a quick note on the SlotMonster sister sites:- There aren’t any. SlotMonster launched in 2024 as the first casino to appear under the banner of Costa Rica’s Atlantis Interactive SRL, and hasn’t yet been joined by any others. It could well be that the operator intends to launch more new casinos, and if it does, we’ll list them for you here. For now, here’s the most impartial and accurate review of SlotMonster you’ll find anywhere on the internet.

Can SlotMonster Be Trusted?

trust score


SlotMonster is a 1-star trusted casino.

1. Licenses and Fines SlotMonster doesn’t claim to hold any iGaming licences.
2. Accepts UK players? The casino accepts UK players, but it shouldn’t. It doesn’t have a licence to do so.
3. Trustpilot Score N/A – There are not yet enough Trustpilot reviews of SlotMonster for the casino to secure a rating.
4. Operator Name & Location Atlantis Interactive SRL is based in Costa Rica, where regulation for casino companies is very lax.
5. Bonus Terms The wagering requirement on the SlotMonster welcome promotion is x35, but we had to comb the full terms and conditions to find this information.
6. Customer Support Email and live chat support. It’s not clear whether or not the live chat is a 24/7 service.
7. Withdrawal Speed & Options Debit card, MiFinity or bank transfer. Fees may apply, and there’s no clarity about transaction speeds.
8. Number of Sister Sites There are no SlotMonster sister sites at present.
9. Games portfolio Around one thousand slots plus live dealer games, crash games and more.
10. On GamStop? SlotMonster is not on GamStop.
Overall SCORE > ★★★★ – 1/5 Stars

SlotMonster Review 2024

SlotMonster went live in 2024, launched by an operator in Costa Rica that’s new to the industry. It’s a modern-looking casino site with big thumbnail graphics, a purple colour scheme, and a cute fluffy purple mascot character. The casino looks relatively easy to use, and it’s obvious from the briefest of glances at the homepage that there are plenty of different iGaming options and categories to consider. All looks good based on first impressions, but are those first impressions accurate? Let’s find out.

SlotMonster sister sites homepage

SlotMonster Welcome Offers

One of the recurring features of international casinos and the companies that operate them is that they usually try to tempt players in with massive welcome promotions. SlotMonster hasn’t tried to do that. The banner on its homepage advertises a simple 100% matched deposit bonus with a maximum value of £300. That’s all the banner says, though, so we went to the casino’s Promotions page looking for more information. We were very surprised to find that the welcome promotion doesn’t appear on that page at all.

The full terms and conditions of SlotMonster stipulate that all bonuses come with an x35 wagering requirement and that the maximum winnings from a bonus are capped at £2000. There’s no information available about minimum qualifying deposits. It’s almost like the advertising banner was designed, but then whoever designed it forgot to include the relevant information elsewhere on the site.

Ongoing Promotions

When you use a word like “monster” in the name of an online casino, you’re indirectly suggesting that everything at the casino will have monstrous proportions compared to your average slots and casino site. SlotMonster doesn’t fit the bill. There are no guaranteed promotions at SlotMonster other than the sign-up offer, and given that the sign-up offer doesn’t appear on the Promotions page, we can’t even be totally confident in that. The “Monster Promotions” include the Pragmatic Play Drops and Wins games and tournaments, plus the Crash & Win and Mega Wheel Madness competitions and tournaments from the same operator. Given that these features are near-universal at casinos that work with Pragmatic Play and are run by the provider rather than the casino, we don’t see them as casino-specific bonuses.

Pros and Cons of SlotMonster

Pros: SlotsMonster looks like a fun time. It comes with all the biggest and best slots, and it intelligently divides them into neat categories on its homepage, making everything easy to find. The casino doesn’t get high marks from us for much, but we’re happy to acknowledge that it’s good for ease of use.

Cons: The terms of the SlotMonster welcome promotion aren’t properly defined, and there are no other real bonuses available at the casino. The casino says that some withdrawals might attract fees, but doesn’t say why, when, or how much. It also doesn’t say how long those withdrawals might take. The casino’s biggest weakness is that it doesn’t have an iGaming licence, thus making it impossible to trust.

Top Games at SlotMonster

The selection of games at SlotMonster is the best thing about the casino. Its name is “SlotMonster” so it was always going to be a slots-led casino – and it is – but there are actually several other categories in play here. The live dealer selection is stacked with gameshows and classic table games from leading providers, with Crazy Time and Lightning Roulette among the top features. As a modern casino, SlotMonster also has a section for crash games, which is led by Aviator, Spaceman, Big Bass Crash and the somewhat more niche Hockey Shootout. Meanwhile, if you’re looking for classics like Starburst and Book of Dead, you’ll find them in the “Old but Gold” section.

Given that Starburst and Book of Dead have basically been consigned to a category full of relics from the past, you might be wondering what the top games at the casino are. The answer is that there’s actually quite a lot of crossover between some of the categories. The top slots at SlotMonster are in the “Monster Love” section at the top of the homepage. Book of Dead and Starburst both appear there, too, alongside Sweet Bonanza, Legacy of Dead and Big Bass Splash. If nothing else, it serves as confirmation that SlotMonster almost certainly has all of your favourite games.

Withdrawal Processing and Support

The absence of a banking page at the casino means that there’s a lack of certainty about the way that SlotMonster handles withdrawals. The familiar logos of Mastercard and Visa appear in the footer of the website, so we know that debit cards are valid. Based on the other logos, we can also use MiFinity e-wallets or (unspecified) crypto coins. We don’t have any information about timescales for withdrawals, and our biggest bugbear is that the SlotMonster FAQ says that fees might apply in some circumstances. It says nothing about how big or small those fees are or what those circumstances might look like. Charging for withdrawals isn’t really on in this day and age, and the lack of specificity is a concern.

Customer Support and Licensing

There’s a chat widget always in view no matter which page of the SlotMonster website you’re using. We’re not sure whether it’s a 24/7 service – the casino doesn’t say – but there was an agent there for us to speak to when we wrote this review during normal business hours on a Thursday. If you can’t get through to anyone, you could instead email [email protected]. The casino doesn’t come with any licensing information, so we have to presume that it doesn’t hold any iGaming licences. There aren’t any SlotMonster sister sites at the moment, but any that exist in the future will be subject to the same licenses – or lack thereof.

SlotMonster – The Verdict

We started this review off by hoping that SlotMonster could live up to the strong first impression that it makes with its graphics and its layout, so we’re a little bit sad that it couldn’t. Things started to go wrong when the casino didn’t provide us with the terms and conditions of its welcome bonus, and they never really got better from there. Threatening to charge for withdrawals without saying why or to what extent is a party foul, and the lack of bonuses and promotions make SlotMonster weak compared to your average international casino site. Throw in the lack of a licence, and you’re looking at a casino that struggles to make a compelling argument to join.

SlotMonster mobile screenshot