21 Casino

Established in 2015, 21 Casino has built up a strong reputation for itself over the years with a host of popular slots.

This White Hat Gaming casino site comes well-equipped with an extensive game collection, jackpot slots, and live casino games from a range of different providers.

21 Casino is fully licensed and regulated by the Malta Gaming Authority and the UK Gambling Commission, ensuring all players have a safe and secure experience.

The Hideous Slots team have put 21 Casino through its paces, evaluating the entire website from top to bottom, to get an accurate, real-world picture of the site. 

This comprehensive review will cover everything from the welcome bonus and ongoing promotions to the banking system, customer support, and the games themselves, so you know exactly what to expect before you sign up.

21 Casino Welcome Bonus

Breaking Down Our Casino Score

Every casino reviewed on Hideous Slots goes through a full testing process before we hand out a final score out of five.

As part of our checklist, we go through all the essentials, including the welcome bonuses, T&Cs, customer support, available payment methods, and game variety. 

The idea behind this is to give our readers a fair, honest, and balanced score that accurately reflects the complete experience. 

We’ve put 21 Casino through these same checks, so you can see how it performs in each category. 

Here’s how we scored 21 Casino. 

21 Casino Welcome Bonus

For many players, promotions are the main thing they look for in a new casino site – and 21 Casino offers a particularly generous welcome bonus. 

New players who sign up using our link and deposit £15 can claim 70 free spins on Book of Dead.

The best part is that no wagering is required! That means any winning from these free spins is credited as cash and can be withdrawn immediately. 

21 Casino keeps the terms fairly simple with this short list:

• Must reside in Great Britain. 
• Minimum deposit: £15.
• Cash spins can only be used on Book of Dead.
  • Must be used within 10 days. 
  • Winnings credited as cash – no wagering required.
  • Capped at £100. 
• Site terms apply.

All in all, this is an excellent welcome offer not to be missed, with clearly laid-out terms with no hidden clauses. 

21 Casino Ongoing Rewards

As far as we could see, 21 Casino does not offer many ongoing promotions outside the initial welcome bonus.

Players can sign up for 21 Casino’s marketing messages via email or SMS  to be informed of any exclusive deals or limited-time offers. They can also head to the Promotions tab of the main casino site to see what’s currently available. 

For players outside of the UK, there is the 21 Suite, which acts as their VIP program. This is ranked for Silver to Diamond, offering exclusive benefits based on your current rank, including weekly personalised offers, dedicated account managers, free spins, and more. 

21 Casino Slot Selection

21 Casino has an extensive slot selection with over 3,000 games from a range of different providers, ensuring there’s diversity in terms of themes, features, and mechanics.

The catalogue is updated regularly to include the newest releases, keeping the experience fresh every session. 

Navigation is simple and intuitive, and the slots lobby has special categories like Megaways, Buy Feature, Cluster Pays, Mega Symbol, and Sticky Wilds, so you can easily sort them according to your favourite gameplay mechanics. 

There’s also a separate section specifically for progressive jackpot slots, with over 50 games to choose from, with the prize money reaching hundreds and thousands of pounds. 

To make browsing even easier, there’s a handy search bar to find specific titles, or you can browse for titles by specific providers. If you’re particularly indecisive, the 21 Casino Casino Random Game feature will select a game for you!

21 Casino Live Casino Games

If you’re more of a traditionalist, 21 Casino has plenty of live casino games, replicating the atmosphere of a brick-and-mortar casino straight to your screen on any device.

This section is powered by industry leaders like Evolution Gaming, Pragmatic Play Live, and OnAir Entertainment, ensuring 24/7 action, lively hosts, and fair RTPs across the board. 

The focus is mostly on classic table games, with craps, roulette, baccarat, and blackjack available in abundance, with some interesting variants available to spice things up. There’s a game to suit every player, with stakes starting as low as 20p.  

There is also some popular live casino game shows available, including fan-favourites from Evolution like Dream Catcher, Monopoly Live, Crazy Time, and Mega Ball. 

21 Casino Live Casino

Mobile Gambling at 21 Casino

While there is no dedicated app for 21 Casino, we found that the site is fully optimised for mobile, on both iOS and Android devices.

The mobile version of the site accurately mirrors the desktop counterpart with all the core features readily available.

Games load quickly thanks to HTML5 technology and adapt to have touchscreen controls, and everything from deposits to customer support runs smoothly without any problems. 

21 Casino Payment Options

21 Casino keeps things easy when it comes to payments, supporting a range of trusted banking methods.

There’s a mix of debit cards, e-wallets, and prepaid solutions available, offering players plenty of flexibility whether they’re depositing for the first time or cashing out. 

Deposits are processed instantly. And while all payment processing is fast and reviewed within 24 hours, actual withdrawal times can take several working days, depending on the chosen payment provider.

There are no admin fees attached to any payments, meaning you’ll always get the best value for your money – and get to keep more of what you win! 

Customer Support at 21 Casino

When checking the customer support at 21 Casino, we found three main channels.

The best place to start if you’re stuck is the Help Centre, which covers common FAQs around payments, account management, bonuses, and technical issues, with a search bar to narrow things down to your specific problem.

If the Help Centre doesn’t cut the mustard, a 24/7 live chat service is available, manned by professional support agents who reply promptly.

The final support option is via email at [email protected], which is designed for more complex queries that require more detail or screenshot attachments. 

21 Casino Responsible Gambling Features

It’s clear that 21 Casino has a very player-centric focus, with a full suite of responsible gambling tools built onto the platform. 

You can take advantage of the following features at any time: 

• Deposit Limits: Set daily, weekly, or monthly limits on how much you can deposit. 
• Game Time Reminder: Keep track of your session time with regular pop-up notifications at set intervals. 
• Time-Out: Take a temporary break from the site for a period of 24 hours up to six weeks.
• Self-Exclusion: If you need a longer break, you can block access to your account for a specific period, between six months and five years. 

21 Casino also offers solid advice for players on how to manage their gambling habits, and provides numerous links to external support organisations, like GamCare, BeGambleAware, and GamblingTherapy, letting players seek out further support if they need it. 

21 Casino Slot Selection

Pros and Cons of 21 Casino

At Hideous Slots, we believe that honesty is the best policy.

That’s why we’ll always give you the full picture, which means breaking down the pros and the cons of each site we review.

In most cases, these cons are only minor issues, but we feel like they’re still worth you knowing about.

Below, you’ll find a clear breakdown of 21 Casino’s pros and cons, giving you an idea of what to expect. 

Hideous Slots Expert Verdict 2025

21 Casino flies under the radar for many players, but it’s a site that deserves far more attention than it gets.

It strikes a strong balance between quality and accessibility, offering a well-rounded slot selection alongside a smooth, mobile-friendly experience.

These strengths are all backed up by an impressive no-wagering welcome bonus with a low minimum deposit, making it one of the more worthwhile sign-up offers we’ve seen in our years of casino reviews.

It’s hard to find many real drawbacks here. The lack of ongoing promotions and slightly slower withdrawals are worth noting, but both are fairly standard in the industry.

After extensive testing, it’s clear that while no casino is perfect, 21 Casino comes very close – and it’s one we’re more than happy to recommend.