121% Welcome Bonus up to £300

RTP - 96.20

18+. New players only. Minimum deposit of £10. Bonus funds are 121% up to £300 and separate to Cash funds. 35x bonus wagering requirements. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed. Terms Apply. Gamble responsibly. www.begambleaware.org

21 Casino Slots Review

21 Casino is a luxurious online casino founded by players for players. With the best developers on side and a huge selection of slots, table games, live dealer games and progressive jackpots, along with plenty of banking options, this casino shines. The site is powered by Whitehat and is owned and operated by Caddell Limited. 21 Casino holds a license from the UK Gambling Commission, and since it launched in 2015, its popularity has continued to grow. We were up for a superior gaming experience, so we've put this casino through its paces to see what it has to offer.

21 Casino Screenshot 1
21 Casino Screenshot 2
21 Casino Screenshot 3
21 Casino Screenshot 4

Review Results

Slot Game Providers and Software

21 Casino offers hundreds of incredible slots from a variety of gaming developers. Here, you'll find classic and up to date titles from the likes of NexGen Gaming, Microgaming, Aristocrat, NetEnt, Betsoft and Blueprint Gaming.

Design & User Experience

The first thing that caught our eye during our review was just how well-designed and elegant 21 Casino is. The layout is smooth, making it effortless to find what you're looking for. With clear graphics and just three tabs – Home, Games and Promotions – everything about this casino is easy. It's clear that a lot of thought has gone into the functionality and design of the platform.

Signing up is super-fast, too. All we did was click on the Sign Up button and completed the registration form. You need to activate your account via email, and that's it. You're on your way to a stunning welcome bonus, extra spins and hours of online casino entertainment.

21 Casino's Mobile Experience

21 Casino has certainly stepped things up with its mobile app. If you're constantly on the move but don't want to miss out on great jackpots and exciting bonuses, this is the way to go. Whether you download the app for Android or iOS, or just log in through your device's browser, you can look forward to the same easy-going experience as you get on the desktop version.

Slot game selection

Slots definitely dominate at 21 Casino. With amazing graphics, exciting features and big wins, we were glad to see that the slots have been neatly categorised into New Games, Top Games and Slot Games. There's also a search bar if you simply want to head straight for your favourites. You'll find tons of classics and new titles at 21 Casino. From Agent Valkyrie to Dead or Alive and even Silent Run, there is plenty to pick from.

Does the casino offer progressive jackpot slots?

At the time of our review, 21 Casino has more than 30 exciting progressive jackpot slots to play. We especially like the fact that if you hover your mouse over a game, you'll find information like that game's RTP, win lines, volatility and reels. If you're on the hunt for big wins, 21 Casino makes sure you're spoiled for choice with titles like Divine Fortune, Paws of Fury, Genie Jackpots and Mega Fortune to name a few.

Deposit and Withdrawal Options

21 Casino accepts a variety of different payments for both deposits and withdrawals. These include wire transfers, debit cards, Paysafecard, Skrill, Neteller, Bankwire, Trustly and Interac. Both the minimum deposit and withdrawal amounts are £10, while the casino allows you to withdraw up to £25,000 per week. E-wallet withdrawals take around an hour to process, while wire transfer takes up to 6 business days.

Credit Cards are banned for gambling in Britain

Exclusive slot bonuses and promotions

When we signed up at 21 Casino, we were warmly welcomed with a 121% match deposit bonus and 21 spins to spend on Book of Dead. The welcome bonus is worth up to £300 and requires a minimum deposit of £10 to trigger. The bonus also carries a decent 35x wagering requirement and must be used within 30 days of receiving it. Carry on playing at 21 Casino, and you'll find plenty more promotions coming your way, complete with reload bonuses, cashback offers and bonus spins that are regularly updated.

VIP & Loyalty Programmes

There's not a whole lot of information on the casino's VIP scheme, but they do run a loyalty scheme where you build up points every time you place a bet. Once you've accumulated 200 points, you'll get a £1 bonus. You can exchange up to 10,000 points a day, which equals a £50 bonus.

Customer Support & Security

If you're ever in a pickle using 21 Casino, help is on hand. The live chat function is available 24/7 and the team provides instant responses. If you prefer, there is an email address you can use.

This casino has turned every stone to ensure your experience on the platform is safe. It makes use of the latest security technology and SSL encryption from RapidSSL to promise that both your financial and personal data is always secure.

Responsible Gambling

21 Casino is passionate about gambling responsibly, and to express this, the casino has implemented several player protection tools to help manage and restrict spending. You can take a temporary break, freeze your account, set time-outs or self-exclude. You can also impose daily, weekly and monthly deposit limits. The site has an entire page dedicated to responsible gambling where you'll find information, advice and tips for managing your gaming habits.

Pros and cons

Pros Cons
Earn Credits the more you wager and play Not as large as other more established casinos
Large selection of slots


We had so much fun trying out 21 Casino, that we think everyone should have a go. The welcome bonus is extremely generous with decent wagering requirements and bonus spins to boot. The game selection is exceptional, especially with so many top-notch developers on board, and the casino is fully licensed, regulated, safe and secure. It's clear this casino cares about its players.

It would be nice to have more information on 21 Casino's VIP program, and perhaps they'll work on adding a support phone line and FAQ page in the future, but there's not much we can niggle about.

Overall, this online casino provided a fun, immersive and super-responsive online gambling experience. Sign up and see for yourself!

Terms and Conditions

First Deposit Bonus - Terms and Conditions

This offer is valid to new players only.
A minimum deposit of £10 is required. The minimum withdrawal from your cash funds is £10
Your cash deposits can be withdrawn at any time, unless we have reasonable grounds to suspect promotional abuse or irregular play. You can find more about this HERE.
If you withdraw your cash deposit, then the accompanying bonus offer is revoked at the same time.
Only one bonus offer is awarded per account per player. We have the right to suspend this offer if you are in breach of this clause.
Our Website terms and conditions apply in full. These can be found HERE.
Should you withdraw any of your cash deposit during the same time that your bonus is active, then you revoke the bonus and your bonus funds will be removed immediately.
This offer gives you the following bonus: 121% up to £300.
There are wagering requirements for you to turn these bonus funds into cash funds. This is 35x bonus.
Games contribute differently to the wagering requirements. The list of games and their respective weighting towards the wagering requirement can be found HERE
The maximum bet for any of your bonus funds is limited to £5. Should you bet higher than this using your bonus funds, you revoke such bonus funds and they shall be removed from your account.
Any unused (i.e. not wagered) bonus funds within 30 days will be removed from your account.
Bonus funds can’t be withdrawn until you have met all of these requirements above. Only cash funds can be withdrawn at any time and at your request.

Terms and Conditions last updated on 01 November 2019 (version 4.0)
arrow-right games-plus hamburger-menu home Asset 1 newsletter play-button review-feature site-type star tag-exit tick white-menu-star

Join today to claim our exclusive sign up bonuses!

Get all the latest slots bonuses, reviews and more.


100% Welcome Bonus & Up to £200 On Your First deposit + 50 Bonus Spins

18+. New players only. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £200 plus 50 bonus spins on your 1st deposit, 50% match up to £50 on your 2nd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org.