All41 Studios

Updated September 17, 2025

Perhaps one of the most surprising aspects of the online gaming revolution in recent years has been the way unexpected parts of the world have emerged as super important players in the industry.

all41 studios software

Estonia, for instance, has shown itself to be one of the mist innovative and creative countries in the world when it comes to slot and casino game development, and yet another studio from there that is now making its mark on the global stage is All41 Studios.

Headquartered in Tallinn, All41 Studios was founded in 2019 and has already built up an impressive portfolio of online slots games designed for play on both mobile and desktop platforms.

Best All41 Studios Casino Sites

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100% up to £200 + 11 Wager-Free Welcome Spins
Our Score
4.5
1

*18+. New Players Only. Min £10 deposit. 11 Welcome Spins on the Pink Elephants 2. Wager-free. The Welcome Spins need to be activated in your account within seven (7) calendar days and used within 24 hours. Welcome offer: 35x Wagering. Game availability & restrictions apply. Full T&Cs Apply. Play Responsibly. GambleAware.org. #AD

Exclusive Offer
100% Match Bonus Up To £300 + 150 Bonus Spins
Our Score
4.7
2

*18+. New players only. One offer per player. Max bonus bet £5. Offer: 100% bonus match on 1st deposit + bonus spins. Value of bonus & number of spins depend on deposit amount: £20 – £100: max £100 bonus + 50 spins on selected games; £101 – £200: max £200 bonus + 100 spins on selected games; or £201+: max £300 bonus + 150 spins on eligible Netent Games. Winnings from spins credited as bonus and capped at £100. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute to wagering requirement. Bonus funds expire within 30 days; bonus spins within 72hrs. Affordability checks apply. Terms apply. Please Gamble Responsibly. BeGambleAware.org. GambleAware.org. #AD

No Wagering
Deposit + Play £10 and Get 100 Free Spins + 60 No Wagering Free Spins
Our Score
4.7
3

#ad. 18+. Gamble Responsibly. Gambleaware.org. New customers only. Enjoy 50 Free Spins on any of the eligible slot games + 10 Free Spins on Paddy’s Mansion Heist. Claim your 50 Free Spins from your promotional hub. Next, enjoy your 10 Free Spins on Paddy’s Mansion Heist (Awarded in the form of a £1 bonus). Finally, opt in, deposit and wager £10 to receive 100 more Free Spins on slots. Free Spins expire after 7 days. T&Cs apply. – Full Terms Apply

Popular
100% Welcome Bonus up to £300 on your first deposit + 50 Bonus Spins
Our Score
4.1
4

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 £20. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £300 plus 50 bonus spins on your 1st deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org #AD

Get 200 Free Cash Spins – No Wagering
Our Score
4.4
5

18+. Gamble Responsibly. Gambleaware.org. New customers only. Up to 200 spins over 4 day period from first deposit & spend of £10. Max 50 spins each day on Fishin’ BIGGER Pots of Gold at 10p per spin for 4 consecutive days. Deposit & spend £10 each day for 50 spins. Spins credited upon spend of £10 each day. Full T&Cs apply.

100% Welcome Bonus up to £100 + 10% Cashback
Our Score
4.5
6

*18+. Welcome bonus for new players only. Maximum bonus is 100% up to £100. Min.deposit is £20. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. Please gamble Responsibly | T&Cs apply | Gambleaware.org #AD

No Wagering
Stake £10, Get 200 Free Spins
Our Score
4.8
7

*18+. New customers only. Opt In required. £/€10 min stake on Casino slots within 30 days of registration. Max bonus 200 Free Spins on selected games credited within 48 hours. Free Spins expire after 7 days. iOS app restrictions may apply. Email/SMS validation may apply. Not available in NI. Full T&Cs apply. Please play responsibly. Gambleaware.org #AD

100% Welcome Package up to £200 + 115 Free Spins
Our Score
3.6
8

*18+. New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. Selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. Please gamble responsibly. GambleAware.org #AD

Play £10, Get 30 Free Spins Or £50 Of Free Bingo
Our Score
4.8
9

*18+. New Players Only. New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. Please gamble responsibly. Gambleaware.org #AD

100% Welcome Bonus up to £500
Our Score
4
10

18+. New players only. Min deposit £10. Bonus funds are 100% up to £500 and separate to cash funds. 40x bonus wagering requirements apply. Deposit and bonus funds count towards wagering requirements. £5 max bet with bonus. Bonus funds must be used within 30 days, spins within 10 days otherwise any unused shall be removed. Affordability checks apply. Terms Apply. BeGambleAware.org

100% Welcome Bonus up to £100 + 100 Free Spins
Our Score
4.3
11

18+. New Players Only. Wagering occurs from real balance first. 35X wagering the bonus. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus valid 30 Days from receipt / Free spins valid 7 days from receipt. Max conversion: 3 X the bonus amount and £500 for free spins. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Please gamble responsibly. Gambleaware.org #AD. Full T&Cs Apply.

No Deposit FS
100% Welcome Bonus up to £123 + 10 No Deposit Bonus Spins
Our Score
4.3
12

18+. New players only. Maximum bonus is £123. Max bet with bonus is £5. No max cash out. Wagering is 50x. Skrill & Neteller excluded. Eligibility is restricted for suspected abuse. Gambling can be addicted. Play responsible. Full T&C’s apply. Please gamble responsibly. GambleAware.org. #AD

Relaunched
100% Welcome Offer up to £25
Our Score
4.2
13

18+. New players making their first deposits only. Min deposit £20. 100% deposit match, max £25 cash. 30x wagering on first deposit amount to receive cash. Redeposit allowed to complete wagering. 18+. Full T&Cs apply. GambleAware.org Please gamble responsibly. #AD

Get 50 Spins on First Deposit
Our Score
4
14

*18+.Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10. Game: Book of Dead, Spin Value: £0.1. WR 60x free spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings amount or £5 (lowest amount applies). Spins must be used before using deposited funds. Bonuses do not prevent withdrawing deposit balance. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. Please gamble responsibly. GambleAware.org. #AD

Deposit £50, Play with £100 + 50 Free Spins
Our Score
3.9
15

18+. New Uk Players only. Amount which can be won or withdrawn is £100 or double the bonus amount at maximum. New registering players only. Mobile Verification Required. Game: Big Bass Splash, Spin Value: £0.1. WR 60x free spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings amount or £5 (lowest amount applies). Bonuses do not prevent withdrawing deposit balance. Irregular play may lead to removal of bonus. This offer is only available for specific players that have been selected by SlotStars. If you have arrived on this page not via the designated offer of SlotStars you will not be eligible for the offer. Bonus Policy applies.

Although the catalogue of All41 Studios is not yet huge, it is nevertheless impressive, with games based around popular slot game themes and featuring a variety of different game mechanics, including Megaways, Hyper Clusters and Hyper Hold, as well as progressive jackpot slots.

One of the reasons All41 Studios has been able to make such an impact on the iGaming industry in a relatively short time is that is has an exclusive partnership with Microgaming, which distributes All41 Studios slots via its game aggregation platform, meaning they have already received exposure at many major UK online casinos.

If you want to find out for yourself why All41 Studios looks set to become a major player in the online gaming world, check out its slots for yourself at one of our recommended UK slot sites.

Who is All41 Studios?

Partnering with Microgaming, one of the biggest and most significant names in the industry, has no doubt given All41 Studios a lot of impetus in its early days. Not only is this a vote of confidence in the quality of the All41 Studios management and development teams, but it has also had practical benefits in enabling its slots to be played at more casino sites and by more players than otherwise would have been the case for such a new producer.

A further reason why All41 Studios games have been such a big hit wth players is that they utilise themes that have already proven popular in online slots, like in Arena of Gold (Roman gladiators), Book of Atem (ancient Egypt) and Wanted Outlaws (the wild west). However, it has also created other games with unique, quirky themes, such as Le Kaffee Bar and Electric Avenue, demonstrating that entertainment is always a high priority in its slot game development.

All41 Studios slots also have broad appeal in terms of their narratives and the quality of the visuals, while music is undoubtedly an area where it excels, with its games all featuring highly engaging, original soundtracks.

It has also integrated a variety of new and innovative mechanics in its slots, so you can enjoy games with multiple ways to win, changing numbers of reels and paylines, and imaginative ways of creating winning combinations. This is in addition to the different types of free spins bonus rounds and other special features incorporated in its games, meaning that All41 Studios slots always offer plenty of variety and are highly engaging to play.

All41 Studios Gaming Sites

As a relatively new game producer, All41 Studios slots are all developed using HTML5 technology specifically so they can be played on all devices, including laptops, desktops, smartphones and tablets, without the need to download and install casino software or an app. This versatility also means that All41 Studios slots can be played at a large number of UK mobile and online casinos.

All41 Studios Gaming Sites

RankBrandRatingReviewWelcome bonusPlayT&C
1
4.5 Read Review
100% up to £200 + 11 Wager-Free Welcome Spins

*18+. New Players Only. Min £10 deposit. 11 Welcome Spins on the Pink Elephants 2. Wager-free. The Welcome Spins need to be activated in your account within seven (7) calendar days and used within 24 hours. Welcome offer: 35x Wagering. Game availability & restrictions apply. Full T&Cs Apply. Play Responsibly. GambleAware.org. #AD

2
4.7 Read Review
100% Match Bonus Up To £300 + 150 Bonus Spins

*18+. New players only. One offer per player. Max bonus bet £5. Offer: 100% bonus match on 1st deposit + bonus spins. Value of bonus & number of spins depend on deposit amount: £20 – £100: max £100 bonus + 50 spins on selected games; £101 – £200: max £200 bonus + 100 spins on selected games; or £201+: max £300 bonus + 150 spins on eligible Netent Games. Winnings from spins credited as bonus and capped at £100. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute to wagering requirement. Bonus funds expire within 30 days; bonus spins within 72hrs. Affordability checks apply. Terms apply. Please Gamble Responsibly. BeGambleAware.org. GambleAware.org. #AD

Exclusive Offer
3
4.7 Read Review
Deposit + Play £10 and Get 100 Free Spins + 60 No Wagering Free Spins

#ad. 18+. Gamble Responsibly. Gambleaware.org. New customers only. Enjoy 50 Free Spins on any of the eligible slot games + 10 Free Spins on Paddy’s Mansion Heist. Claim your 50 Free Spins from your promotional hub. Next, enjoy your 10 Free Spins on Paddy’s Mansion Heist (Awarded in the form of a £1 bonus). Finally, opt in, deposit and wager £10 to receive 100 more Free Spins on slots. Free Spins expire after 7 days. T&Cs apply. – Full Terms Apply

No Wagering
4
4.1 Read Review
100% Welcome Bonus up to £300 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 £20. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £300 plus 50 bonus spins on your 1st deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org #AD

5
4.4 Read Review
Get 200 Free Cash Spins – No Wagering

18+. Gamble Responsibly. Gambleaware.org. New customers only. Up to 200 spins over 4 day period from first deposit & spend of £10. Max 50 spins each day on Fishin’ BIGGER Pots of Gold at 10p per spin for 4 consecutive days. Deposit & spend £10 each day for 50 spins. Spins credited upon spend of £10 each day. Full T&Cs apply.

6
4.5 Read Review
100% Welcome Bonus up to £100 + 10% Cashback

*18+. Welcome bonus for new players only. Maximum bonus is 100% up to £100. Min.deposit is £20. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. Please gamble Responsibly | T&Cs apply | Gambleaware.org #AD

7
4.8 Read Review
Stake £10, Get 200 Free Spins

*18+. New customers only. Opt In required. £/€10 min stake on Casino slots within 30 days of registration. Max bonus 200 Free Spins on selected games credited within 48 hours. Free Spins expire after 7 days. iOS app restrictions may apply. Email/SMS validation may apply. Not available in NI. Full T&Cs apply. Please play responsibly. Gambleaware.org #AD

No Wagering
8
3.6 Read Review
100% Welcome Package up to £200 + 115 Free Spins

*18+. New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. Selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. Please gamble responsibly. GambleAware.org #AD

9
4.8 Read Review
Play £10, Get 30 Free Spins Or £50 Of Free Bingo

*18+. New Players Only. New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. Please gamble responsibly. Gambleaware.org #AD

10
4 Read Review
100% Welcome Bonus up to £500

18+. New players only. Min deposit £10. Bonus funds are 100% up to £500 and separate to cash funds. 40x bonus wagering requirements apply. Deposit and bonus funds count towards wagering requirements. £5 max bet with bonus. Bonus funds must be used within 30 days, spins within 10 days otherwise any unused shall be removed. Affordability checks apply. Terms Apply. BeGambleAware.org

The hots and nots of All41 Studios Gaming

Pros:

  • The slot game themes you love – There’s no doubt that UK slot players have their favourite categories of themes, and in this regard All41 Studios really delivers. If slots with gladiators, slots with an Irish theme, or games set in the Aztec world are on your list of favourite themes, then you won’t be disappointed by the titles in the All41 Studios game portfolio.
  • Designed for high volatility action – The All41 Studios slots catalogue contains a large number of games with high and very high volatility and variance. If your preference is for slots where you need patience, but which have very big wins on offer, then check out titles like Shamrock Holmes Megaways, Ingots of Cai Shen, or Tiki Reward.
  • Exciting game mechanics — All41 Studios has been bold in its game design and incorporated some of the most exciting game mechanics around. This includes the hugely popular Megaways, Hyper Clusters (where wins are awarded when symbols are clustered together so that they are adjacent either horizontally or vertically), and Hyper Hold (multiple symbols can be locked in place for free re-spins so you can win more than once from a single spin).
  • Microgaming progressive jackpot network — All41 Studios has also developed its first progressive jackpot slot. Book of Atem is part of the Microgaming WowPot! network, where you can play for one of four jackpots and which paid out a stunning €17,529,047.11 jackpot prize win in April 2021.

Cons:

  • Relatively limited catalogue – We’re confident that once your start to explore some of All41 Studios’ best-known titles, you’ll love the gameplay and other features. However, the only drawback is that the portfolio is still relatively limited, so you can work your way through the entire catalogue quite quickly.

Top All41 Studios Slots Game

All41 Studios Games

If you’re a dedicated slots player, or someone who just plays every now and then, you can’t fail to be impressed by the high production values in All41 Studios slots, as well as the way it incorporates a range of game mechanics, bonus features and special symbols in all of its games.

Book of Atem Wowpot: All41 Studios’ first progressive jackpot slot, Book of Atem is set in ancient Egypt and is a 5 reel, 3 row progressive jackpot slot featuring expanding symbols, wilds and scatters, and a free spins bonus round. The game is part of Microgaming’s Wowpot! Jackpot network, which as of April 2021 has paid out more than £48 million in prizes, with the biggest win to date on Book of Atem being worth more than £14.5 million.

Forgotten Island Megaways: This very high volatility video slot was released in January 2021 and has a RTP of 96.25%. Like all Megaways slots, the reel configuration changes on every spin, and you can have up to 117,649 ways to win. Loosely based on the story of King Kong, the game features rolling reels, wilds and scatters, random win multipliers, and a choice of three different free spins bonus rounds. The game looks great, while the original soundtrack is a particular standout feature.

Ingots of Cai Shen: One of an ever-growing number of slot games with an ancient Chinese theme, Ingots of Cai Shen is a high volatility 5 reel, 3 row 243 ways-to-win slot with a 96.42% RTP. Released in February 2021, it has a special feature that enables you to win jackpot prizes and a maximum payout of 1000x. With a fun, light hearted design based around the character of Cai Shen and classic Chinese symbols associated with luck and good fortune, there is a good range of coin sizes on offer, so the game is widely accessible.

Wanted Outlaws: Released in October 2020 and designed around the popular wild west theme, Wanted Outlaws is packed with features, including the Nobleways game mechanic which offers 3,125 ways-to-win on every spin, along wth scatter and wild symbols, and a free spins bonus round. A high volatility, 5 reel, 5 row slot with a 96.41% RTP, Wanted Outlaws has a highest jackpot payout worth 2,500x your total wager, as well as a variety of significant payouts throughout the base game.

All Win FC: This football themed slot, released in May 2020, is a 5 reel, 3 row very high volatility game featuring 10 paylines and a 96.12% RTP. With expanding wilds, a symbol upgrade feature, and a free spins bonus round, All Win FC has a wide range of coin sizes and a 5,000x jackpot payout. The design of the game recreates the atmosphere and excitement of a major international football tournament, with a pumping soundtrack that builds up the emotions throughout.

One of the reasons why All41 Studios slots have proven to be so popular is that they combine both the familiar and the new. Many of the themes will be recognisable to regular slot players (although the production values mean that they are never run-of-the-mill), while at the same time new and innovative game mechanics are also a key feature. As most All41 Studios slots are high volatility games, there are always good payouts on offer.

Our final thoughts

All41 Studios isn’t necessarily a name that you will be familiar with yet, partly because they are a young company and partly because their slots are released on the Microgaming platform. However, we are convinced that this is a studio who you should keep a close eye on, as its games have excellent production values (especially in terms of music and sound effects), combined with a range of innovative game mechanics and special features. The large range of coin sizes is also a real positive, as it means you can access games regardless of the size of your bankroll.

If you want to check out the games of the latest hot studio to emerge from Estonia, you can play All41 Studios slots at any of our expert picks for UK casino sites.

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Mark Angus is a casino critic and platform analyst with over a decade of experience in the online gambling industry. A trusted voice in casino, slots, and iGaming, he provides clear, honest, and in-depth reviews of casino platforms, bonuses, and slot games, ensuring players make informed decisions. Known for his no-nonsense approach, Mark breaks down casino usability, wagering requirements, RTP, volatility, and game mechanics—helping players navigate the gambling world with confidence. Whether exposing hidden terms or highlighting player-friendly platforms, his reviews focus on fairness, transparency, and real player value.