Slot Boss Casino Review

Our score How we rate
4.5 4.5 /5

100% Deposit Offer Up To £150 And 50 Extra Spins

*18+. T&Cs & exclusions apply. New players deposit £10+. Cash & wagering conditions vary. Max reward £150. 7 days to claim + further 7 days to wager 35x. 50 FS 10p each awarded on Big Bass Splash after wagering, 3 day expiry. Please gamble responsibly. #AD

Play 600 slots by NetEnt, Quickspin, Yggdrasil, Eyecon and more
UK players can use PayPal for deposits and withdrawals
Extensive FAQ pages to answer most player queries
Launched 2013
License UK
Live Chat: 24/7
Phone number: n/a
Support Email: [email protected]
FAQ section: Yes

Payments methods

Visa Debit Mastercard Debit Paypal payment method Bank transfer payment

Game Manufacturers

IGT software NetEnt Software playngo evolution-gaming 1x2 Gaming Software Provider red-tiger-gaming Realistic Games Blueprint Gaming Yggdrasil Gaming Big Time Gaming Microgaming +19 WMS ELK Studios Inspired Entertainment Pragmatic Play Hacksaw Gaming Wazdan Slingo Eyecon Thunderkick Core Gaming Lightning Box NextGen Gaming Relax Gaming Authentic Gaming Iron Dog Studio Kalamba Games Push Gaming Quickspin Playtech
100% Deposit Offer Up To £150 And 50 Extra Spins

*18+. T&Cs & exclusions apply. New players deposit £10+. Cash & wagering conditions vary. Max reward £150. 7 days to claim + further 7 days to wager 35x. 50 FS 10p each awarded on Big Bass Splash after wagering, 3 day expiry. Please gamble responsibly. #AD

100% Deposit Offer Up To £150 And 50 Extra Spins

*18+. T&Cs & exclusions apply. New players deposit £10+. Cash & wagering conditions vary. Max reward £150. 7 days to claim + further 7 days to wager 35x. 50 FS 10p each awarded on Big Bass Splash after wagering, 3 day expiry. Please gamble responsibly. #AD

Updated February 5, 2024

A Quick Look at Slot Boss

One of a growing number of UK slots sites operated by the team behind the stupendously successful Leo Vegas (which also includes BetUK and,uk), Slot Boss Casino is the perfect place for playing mobile slots by the biggest and best studios.

You can play more than 600 Slot Boss slot games by major studios like NetEnt, Pragmatic Play and IGT, as well as emerging names like Kalamba Games, Plank Gaming and Iron Dog Studios. This means you get a great mix of well-known slot gams titles alongside a steady stream of new release games, ensuring there is plenty of variety on offer for all.

The range of games at Slot Boss UK also includes a wide selection of table and card games, including an impressive range of live dealer games, as well as good choice of scratch card and instant win games.

As part of the Leo Vegas group, Slot Boss Casino is a trusted site and licensed and regulated by the UK Gambling Commission.

This site earns a WhichBingo 4.5* Rating – here’s how:

  • Offers/Promotions/Wagering: Unusual bonus payout system, reasonable wagering. Good if you win early on.
  • Fast Payments/Withdrawals: Deposits instantly credited your account. Fast withdrawal
  • Good Game Selection & Navigation: Great choice of games from a range of studios
  • Quality of Mobile Bingo: iPhone users can play via the Slot Boss app and good overall
  • Customer Service: Live chat is available 24/7

  • Date Opened: 2013
  • UK License Holder Name: Leo Vegas Gaming PLC
  • UK Licence Number: 039198-R-319450-023
  • The mix of games gives you plenty of choice
  • A site dedicated to mobile slots and casino games
  • Pick up extra spins as a sign up bonus
  • Limited number of payment methods
  • Customer support via phone would be helpful

Bonuses & Promotions

The Slot Boss Welcome Offer

  • 1st Deposit: 100% match bonus plus 50 extra spins
  • Minimum Deposit: £10
  • Promo Code: Need to opt in
  • Wagering requirement: 35x

When you sign up as a new player at Slot Boss Casino, you get a match bonus and 50 extra spins when you make your fist deposit.

You receive a 100% match on your initial deposit up to the value of £150, plus you pick up 50 extra spins on the Pragmatic Play slot game Big Bass Splash. To claim the bonus, simply click on the Opt In and Deposit tab under My Offers, and make a deposit of at least £10 within 7 days of opening an account.

The wagering requirement is 35x the deposit amount, and you have 7 days in which to meet the playthrough. Check the T&Cs for which games help to clear the bonus.

Extra spins are worth £0.10 each, and are valid for 3 days.

This is a slightly unusual Welcome Bonus in that you can make and wager more than one deposit in order to clear the bonus, and you can withdraw from your real money account without automatically forfeiting the bonus you’ve been awarded.

*18+. T&Cs & exclusions apply. New players deposit £10+. Cash & wagering conditions vary. Max reward £150. 7 days to claim + further 7 days to wager 35x. 50 FS 10p each awarded on Big Bass Splash after wagering, 3 day expiry. Please gamble responsibly. #AD

Ongoing Offers and Promotions

There is a range of Slot Boss UK games designated as Gigantic Jackpots. These slots feature randomly activated Mini, Minor, Major and Mega Jackpots, and are played across the entire Leo Vegas casino network.

To play any of the Gigantic Jackpots slots, you need to opt in when you open any designated game.

Games & Software at Slot Boss

With around 600 slots to choose from, the Slot Boss UK slots selection offers plenty of choice and variety, with a huge range of themes and games from both major and emerging game developers.

Site Platform: Pragmatic Play
Game Software providers:Microgaming, IGT, NetEnt, Play’n GO, Novomatic, Evolution Gaming, 1X2 Gaming,
Red Tiger Gaming, Realistic Games, Blueprint Gaming, Yggdrasil, iSoftBet,
Big Time Gaming, Eyecon, Thunderkick, WMS, Core Gaming, ELK Studios,
Inspired Gaming, Lightning Box Games, NextGen Gaming, Relax Gaming,
Pragmatic Play, Authentic Gaming, Golden Rock Studios. Hacksaw Gaming,
Iron Dog Studios, Kalamba Games, No Limit City, Plank Gaming, Push Gaming,
Quickspin, ReelPlay, Slingo, Wazdan, Playtech, On Air
Number of Slot games: 600
Type of slot games: video slots, TV themed slots, classic slots, progressive jackpot slots, Megaways slots
Number of Casino Games: 80
Type of casino games: live dealer games, blackjack, roulette, baccarat, craps
Bingo Games: No

Slot Games

Although the number of Slot Boss Casino slots is not as large as at some of the other sites that we feature here, the range of 600 games is still impressive.

As the slots are by so many different studios, you can find many of the most popular slot themes and titles, including big name games like Thunderstruck II, Immortal Romance, Esqueleto Explosivo and Narcos, as well as plenty of new release games.

One of the best features of playing here is the huge number of Megaways slots you can choose from. This includes games created specifically as Megaways games (including the exclusive Leo Vegas slot game), plus popular slots that have been adapted to feature the Megaways mechanic, like Gonzo’s Quest and Fluffy Favourites.

Casino Games

Live dealer games are hugely popular at Slot Boss UK, with games by Evolution Gaming, Playtech and On Air.

The range include multiple versions of all the classic casino table and card games, as well as a great selection of live game shows, such as Adventures Beyond Wonderland, Crazy Time, Monopoly Live and Football Studio.

You can also play a variety of online table and card games, including different varieties of blackjack and roulette, as well as Dragon Tiger and table poker games.

What Jackpots are available at Slot Boss?

The jackpot network at Slot Boss UK is called Gigantic Jackpots, and features progressive jackpot slots that are played across all the casino sites in the Leo Vegas network.

With a Major Jackpot that seeds at £4,500,000, there are plenty of opportunities to win big. To play, simply opt in when you open any of the selected Gigantic Jackpots titles; an additional £0.09 will be added to every spin to ensure that the progressive jackpot will grow quickly and reach a massive amount.

Other Games

Although slots and live dealer games are the main focus as Slot Boss Casino, there is also a good range of Slingo, scratch cards and instant win games, including titles such as Starburst, Who Wants to be a Millionaire, and Deal or No Deal.

How to Deposit & Cash Out 


There are a limited number of options when it comes to making deposits at Slot Boss UK. The minimum deposit amount using all payment methods is £10, and no fees are charged.

Deposit MethodMinimum DepositProcessing TimeFee
Visa debit£10 Instant £0
Mastercard debit£10 Instant £0
PayPal£10 Instant £0
wire transfer £10 Instant £0

Cashing out

There are no fees charged for making withdrawals, with most cash out requests usually taking between 1 -2 business days to be processed. There are no fees charged for making withdrawals using any payment method.

Withdrawal MethodMinimum WithdrawalProcessing TimeFee
Visa debit£10 1 -2 business days £0
Mastercard debit£10 1 -2 business days £0
PayPal £10 1 -2 business days £0
Wire transfer£10 1 -2 business days £0

How do I upload my ID to Slot Boss?

In order to make a withdrawal, you need to first verify your name, age and address (via the documents described below). You can upload your ID using the document uploader and you will usually receive acknowledgement of the receipt of your documents within 24 hours (although verification can take up to 5 working days at busy times).

You are required to do the following to verify your ID:

  1. Verify your source of funds (using payslips or bank statements)
  2. Verify your name and age (using driving licence or passport)
  3. Verify your address (using utility bill, payslip, council tax bill for the current year, bank, building society or credit union statement)

Community and Customer Service 

As a mobile first slots site, the emphasis at Slot Boss UK is entirely on the excellent choice of games, and so it is not really a site where there is a strong sense of a playing community.


  • Instagram
  • Facebook
  • Twitter

Slot Boss UK has a limited social media presence, with a Twitter account (@SlotBOSS_) and an Instagram page (slotboss), although these have both been dormant for some time, as well as a Facebook page that promotes safe gambling messages.

Given that the social media platforms are not especially active, we would recommend using the casino live chat or email if you want to engage with customer support.

Customer Service

  • Live Chat
  • Email
  • FAQs

You can engage with customer support via live chat or on email, although there is no option for making contact on the phone. The FAQ pages here are very extensive, and so you should be able to find answers to most of your queries using these.

In our experience, the customer services team responds in relatively quick time, and we have found them to be knowledgeable and helpful.

Slot Boss on Mobile

Slot Boss Casino is a mobile first site and offers a huge choice of 600+ games (including slots and live dealer games), a well-designed and easy to navigate UI, and an overall enjoyable playing experience.

If you are an iPhone or iPad user, you can download and install a free Slot Boss app from the App Store (search for Slot Boss: Online Slots). There is no Android Slot Boss app, but this is not a problem, as games can still be played directly in the browser of your phone or tablet.

Should I Play at Slot Boss?

The overall mix of the slot games at Slot Boss UK is what makes this an enjoyable site at which to play. With games by a mix of developers, you can play the best-known slots while also getting the chance to explore a variety of new release games. However, in our view the highlight is the large number of Megaways slots, plus the chance to be a part of the Leo Vegas progressive jackpots slot network.

Alternatively, if live dealer games are your thing, then you’ll be impressed by the Slot Boss selection. In particular, the range of live game shows means there are always plenty of entertaining options open to you.

We want your Slot Boss review!

If you have previously played here and would like to share your thoughts with other players, please feel free to leave a comment below. If you are feeling more energetic, you can even write your own Slot Boss review!

Slot Boss FAQ

Does Slot Boss charge for making deposits or withdrawals?

There is no charge for either depositing or cashing out at Slot Boss UK.

What Safe Play tools are available?

There are several ways in which safer gambling is supported at Slot Boss Casino, including deposit, loss and wagering limits, reality checks, time outs and self-exclusion.

Do I need a Slot Boss app to play mobile slots.

If you have an iOS device, you can download a Slot Boss app from the App Store. Android users can play on a mobile phone or tablet directly in your browser.

What is the minimum deposit and withdrawal amount?

What is the minimum deposit and withdrawal amount?

How will I know if my documents have been verified?

You will receive an email confirmation as soon as your account has been verified.

Mark Angus Author Whichbingo



Mark Angus is a professional writer and editor currently based in Adelaide and London. Mark writes on a variety of sports betting and gaming topics, most notably football and cricket (he has been a season ticket holder at Fulham for far too many years), as well as horse racing, in particular jumps racing. In addition, Mark produces website content, blogs and articles for a variety of publications, organisations and businesses, and has extensive experience in writing for all forms of online, print and broadcast media.

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