Relax Gaming Slot Games 2026

About Relax Gaming

Relax Gaming was founded in 2010 in Malta with a focus on bingo, poker and casino platform services rather than slot development. The pivot to slots came in 2017 with the release of Money Train — a high-volatility Money Cart-bonus title that immediately broke through and established the studio’s modern identity. Money Train spawned three sequels and turned Relax from a platform business into one of the most influential slot studios of the late 2010s and 2020s.

The Kindred Group acquisition

Relax was acquired by Kindred Group (the Stockholm-listed gambling operator that owns Unibet, 32Red, Maria Casino and others) in 2021 for approximately £250 million. The acquisition placed Relax inside one of the largest UK-facing operator groups, with guaranteed distribution across Kindred-owned casinos. The studio retained creative independence and continued to ship under its own brand.

FDJ ownership (2024)

In 2024, Kindred Group was acquired by La Française des Jeux (FDJ) — the French state-backed lottery and gaming group — in a deal worth around €2.6 billion. Relax now sits inside the FDJ group structure as a subsidiary. As of 2026 the studio continues to operate from Malta under the Relax brand, with the same creative team.

The Silver Bullet program

Beyond its own catalogue, Relax operates the Silver Bullet program — a publishing platform for smaller third-party studios. Studios like Print Studios, Lady Luck Games, Boomerang Studios, Northern Lights Gaming and others distribute their slots into the global market through Silver Bullet. The arrangement gives Relax a second revenue stream independent of its own slot releases, and gives smaller studios access to UK casino integrations that would otherwise be costly to build independently. Silver Bullet now publishes 40+ third-party studios.

The mechanic-led identity

Relax’s brand is built on mechanic invention. The Money Cart bonus (Money Train series), Persistent Wilds, Snake Eyes, the Multiplier Ladder of Beast Mode — each has become a recognisable Relax signature. The studio ships fewer slots per year than Pragmatic Play or NetEnt, but invests more in the mechanic side of each release.

The 10 best Relax Gaming slots in 2026

Ranked by RTP, max-win potential, mechanic quality and series strength. Relax’s catalogue is built around the high-volatility Money Train franchise and a handful of elite-RTP outliers.

1. Money Train 4

The current peak of the Money Train franchise. 150,000x max win is one of the highest in the entire UK slot market — only beaten by select Nolimit City titles. The Money Cart 4 bonus extends the previous Money Cart formulas with new feature symbols (Reset Plus, Coin Reset, Necromancer) that build progressively across the bonus round. Very high volatility — not for tight bankrolls.

2. Book of 99

One of the highest published RTPs at any UKGC-licensed slot. Same Book-style expanding-symbol mechanic as Play’n GO’s Rich Wilde series, but at 99% RTP instead of 96.21%. The 10,752x max win is the strongest combination of elite RTP and high max-win in any UK slot. Featured in our high RTP slots guide as a top pick.

3. Marching Legions

Relax’s second elite-RTP entry at 98.12%. Unusual combination — very few slots pair 98%+ RTP with 20,000x+ max win. The Marching Reels mechanic advances symbols across the grid for chained cascades, producing the long-run payback that justifies the headline RTP.

4. Money Train 3

The series entry that most defined modern high-volatility slot design. Money Train 3 introduced the Persistent symbols (Pirate, Sniper, Crown, etc.) that re-trigger across the Money Cart bonus, producing chained big wins on the right alignment. The 100,000x max win was unprecedented at release; Money Train 4 has since pushed the ceiling higher.

5. Money Train 2

The breakthrough hit that cemented the Money Train franchise as a generational slot series. Higher RTP than Money Train 3 (96.40% vs 96.10%) but lower max win (50,000x vs 100,000x). For many UK players this remains the best Money Train entry — balanced max-win and RTP, plus the introduction of the post-apocalyptic theme that defines the modern entries.

6. Hellcatraz

Relax’s MegaClusters adaptation, licensed from Big Time Gaming. Combines the cluster-pays-at-scale MegaClusters engine with a prison-break theme. The 51,840x max win is one of the highest in the cluster-pays format; the 96.65% RTP is well above the Megaways/MegaClusters average.

7. Temple Tumble Megaways

Relax’s first Megaways title and still one of its strongest. Cambodian-temple theme with cascading reels and a multiplier ladder that grows through the free-spins round. Lower max-win ceiling than the Money Train entries but more accessible volatility for casual play.

8. Money Train (original)

The slot that started everything. Money Train’s original Money Cart bonus took a while to gain traction at UK casinos, but eventually became the foundational format that the entire series built on. Lower max win (20,000x) and lower RTP (96.20%) than later entries; still in active rotation as the “purist” Money Train experience.

9. Beast Mode

One of Relax’s more recent high-volatility hits. Gym/fitness theme with a multiplier ladder that progressively increases through the bonus round. The 15,000x max win is modest by Relax standards but the volatility profile is genuinely brutal — bonus triggers are rare but rewarding.

10. Snake Arena

A more accessible entry into the Relax catalogue. Snake-arena theme with the distinctive Snake Eyes mechanic where a snake symbol moves across the reels during free spins, converting symbols and producing chained wins. Lower max-win ceiling than the Money Train family but more frequent bonus triggers and lower volatility.

Best Relax Gaming Online Slots in 2026

Relax Gaming’s slot games can be distinguished as much by their diverse pay tables and volatility levels as by their design. Aside from individual features such as jackpots, bonus spins, and respin options, their slots are known for their vivid graphics, sounds, and overall superior visual appeal.

Virtually every slot developed by Relax Gaming is given the same attention to detail to ensure each release is unique and engaging.

Take, for example, Aztec Ascent, Mega Flip, Chip Spin, and Trolls Gold. All of these slots, released in the summer of 2021, are characterized by high RTPs of over 96%, distinct themes and symbols, and huge max cash offers. The lowest max bonus between them is that of Trolls Gold, with a max bonus of 12,000x your stake, with Aztec Ascent having the biggest max win of 40,000 your wager amount.

Below we will examine four slots that have significantly contributed to Relax Gaming becoming one of the foremost providers of online casino slots.

Money Train

Money Train, released in 2019, is one of this brand’s signature slot machines. It is a 5-reel, 4-row game with a brilliant Western theme and soundtrack. The betting range is between £0.10 and £50, providing the opportunity for some decent wins during the base game. Money Train has an RTP of 96.2%, 40 pay lines, and is a high volatility (variance) game, so don’t expect to win often.

During the base game, the maximum you can win is 20,000x your stake. Money Train boasts a range of different features, including wilds, multipliers, scatters, stacked symbols, and a respin and Buy Feature. The game’s RTP can climb to 98% when you activate the Money Cart Bonus feature by landing scatter symbols on reels 1, 3, and 5. If you enjoy this famous online slot, check out the latest version Money Train 2.

Tower Tumble

Tower Tumble is another popular title that came out in 2019. It’s a medium-to-high volatility slot with a slightly lower than average RTP of 96.11%. Tower Tumble has six reels and six rows, and there are no fixed paylines but rather cluster pays, increasing the potential for winning. It is played in a fantasy land where the prevalent symbols are different-coloured magical potions, an elf, a prince, and a book, among other icons. The 6×6 grid symbols has a limited number of 12 symbols packed in the middle with greyed-out boxes surrounding them. You can receive between 5 and 10 free spins with this feature.

Snake Arena

Released in early 2020, Snake Arena is a multi-currency, 5×5 slot with 30 pay lines that are constantly active. The slot has a slightly above average RTP of 96.25% but a relatively small maximum win of 2,758x your stake.

Snake Arena, despite its mediocre name, is among the more creative slots in their catalogue. The slot’s betting range is between £0.10 and £100. The relatively high maximum wager per spin, as well as the game’s high volatility, make it a popular big-paying slot for high rollers. No scatter symbols, or progressive jackpots are available, though there are plenty of exciting features such as the Wild Chase feature and possible combinations to win. The lower-paying symbols are coins of different colours. The more valuable are the ham and dagger, the wooden beer stein, a golden goblet-like symbol with a green eye, and a golden crown.

Zombie Circus

Zombie Circus is a classically designed slot with 5 reels, 3 rows, and 10 fixed pay lines. It is a fairly simple game to understand with traditional card symbols from A-10, which are the lower-paying symbols. The wild symbol is a golden pedestal between two golden curtains.

In order to unlock the Bonus Game feature, you need to land bonus symbols on the first, third, and fifth reel. Landing the 3 bonus symbols will trigger 2 so called Zombie Waves. Four bonus symbols activate 3 Zombie Waves, and 5 Bonus Symbols activate 4 Zombie Waves.

Progressive Jackpot Slots

Progressive jackpot slots are common slot games with a significantly more attractive jackpot bonus. The jackpot starts at a designated sum and keeps rising as more people wager until someone eventually lands the winning combination. Relax Gaming has many slots that offer unique jackpots however, only a small number of their titles offer progressive jackpots.

• Journey to Mars – A 5-reel, 3-row, and 105-pay line slot where 3.6% of all real money wagers go toward the progressive jackpot prize
• Caribbean Anne – A 5×3 slot by Kalamba Games with 40 pay lines and an RTP range of 93.52% to 97.83. Caribbean Anne has four progressive jackpots, Bronze, Silver, Gold and Platinum.

So far, Journey to Mars appears to be the only proprietary slot by Relax Gaming that offers a progressive jackpot. Meanwhile, progressive jackpot slots like Caribbean Anne are developed or promoted in a joint venture with fellow casino software providers like Kalamba Games.

Relax Gaming Megaways

As is the case with progressive jackpot slots, this brand has an extremely limited number of Megaways slots. In fact, they’ve applied the popular slots format patented by Big Time Gaming to only one slot, Temple Tumble.

Temple Tumble Megaways is a cool 6×6 jungle themed slot. The game has an RTP of 96.25%, and being a Megaways game, it can have up to 46,656 pay lines. If you land matching symbols on three or more adjacent reels in a left to right direction, you will win. In free spins mode, certain grey blocks contain special prizes such as free spins, multipliers or both.

Highest-RTP Relax Gaming slots

Relax is unusual among slot studios in shipping two genuine elite-RTP titles (Book of 99 at 99% and Marching Legions at 98.12%) alongside high-volatility hits. The studio’s catalogue covers a wider RTP range than most competitors. Ranked by published RTP:

For pure expected-value play, Book of 99 (99%) and Marching Legions (98.12%) are genuinely elite picks — matched by very few slots anywhere in the UK market. For more modern mechanics at high RTP, Hellcatraz (96.65%) leads. The Money Train series accepts slightly lower RTPs (96.10–96.40%) in exchange for the franchise’s signature max-win potential. See our high RTP slots guide for cross-provider context.

The Money Train series — Relax’s defining franchise

If one franchise defines Relax Gaming, it’s Money Train. The series has produced four entries over five years (2019–2023) and established the format for modern high-volatility slot design across the entire industry.

The Money Cart bonus format

Each Money Train entry uses a variant of the Money Cart bonus — a separate-screen feature game where persistent symbols stay on the grid for re-spins until no new symbols land or the bonus expires. Different symbol types do different things: some add cash values, some multiply existing values, some collect or reset, some trigger persistent effects. The result is a bonus round that can produce wildly different outcomes from the same starting setup — high variance with the upside of generational hits.

The four entries compared

Why the series matters beyond Relax

Money Train 2 (2020) was the slot that proved high-volatility, very-high-max-win designs could be commercially viable. The series spawned an entire wave of imitator slots: Pragmatic Play’s Money Cart-style bonuses appeared in Cash Bonanza and similar titles; Nolimit City’s persistent-feature designs trace directly to Money Train influence; even BTG incorporated persistent-symbol mechanics into Royal Mint Megaways and Lil Devil Megaways after Money Train’s success.

Which entry should you play?

For pure max-win potential: Money Train 4 (150,000x). For the best balance of RTP and max win: Money Train 2 (96.40% / 50,000x). For the most-loved entry by series fans: Money Train 3 introduced the Persistent symbol mechanic that defines the modern Money Cart bonus. For the historic “first” experience: Money Train original (2019) is the slot that started everything.

Buy-bonus availability

Money Train slots include a buy-bonus feature in most jurisdictions. The UKGC bans bonus-buy features for real-money UK play, so the buy-bonus button is disabled at UKGC-licensed casinos. Free-spin triggers still happen organically. UK players can see the bonus mechanic in demo mode but cannot purchase it.

Dream Drop network jackpot and the Silver Bullet platform

Beyond the Money Train franchise, Relax operates two distinctive commercial products that competitor pages rarely cover in depth.

Dream Drop — Relax’s network jackpot

Dream Drop is Relax’s network progressive jackpot, launched in 2022 and now layered across multiple Relax slots and selected Silver Bullet third-party titles. The structure is a five-tier progressive jackpot pool (Rapid, Midi, Maxi, Major, Mega) with the Mega tier seeded above £1 million and growing through wagers across all participating UK casinos.

Dream Drop-eligible slots include several Relax originals plus a handful of Silver Bullet partner titles. The network’s base-RTP impact varies by slot — some Relax titles run lower base RTPs in their Dream Drop variants to fund the jackpot, others maintain similar RTPs to the non-jackpot version with the jackpot funded from a different revenue source.

Silver Bullet — the third-party publishing platform

Silver Bullet is Relax’s content-distribution and integration platform for smaller slot studios. Studios like Print Studios, Lady Luck Games, Boomerang Studios, Northern Lights Gaming, Hot Rise Games and 40+ others distribute their slots into the global market through Silver Bullet, gaining access to UK casino integrations that would otherwise require expensive direct casino partnerships.

For players this means many “Relax Gaming-powered” slots aren’t actually Relax originals — they’re third-party studio releases distributed through Silver Bullet. Print Studios (the developer behind Pearl o’ Plinko) is the highest-profile Silver Bullet partner; their slots run at Relax’s stated RTPs but are mechanically distinct from Relax’s own catalogue.

What this means for UK players

When you see “Relax Gaming” as the provider on a UK casino’s slot lobby, the actual studio could be Relax itself, or any of 40+ Silver Bullet partners. The slot’s RTP and audit certification all sit under Relax’s regulatory umbrella, but the development team and mechanic style vary widely. Verifying the actual developer (often listed in the slot’s info screen) helps set expectations. For depth on the Dream Drop network and other UK jackpot slots, see our jackpot slots guide.

Where to play Relax Gaming slots in the UK

Relax distributes through both its own direct integrations and the Silver Bullet platform, meaning the catalogue is broadly available at UKGC-licensed casinos. The following sites stand out for Relax players:

• Mr Vegas — carries the full Relax catalogue including the entire Money Train series, Book of 99 and Marching Legions. Strong Silver Bullet partner library too. 5,500+ slots overall with PayPal-friendly fast withdrawals.
• bet365 Casino — comprehensive Relax selection with industry-leading withdrawal speeds. Particularly strong on Money Train 2 / 3 / 4 and Book of 99.
• BetMGM Casino — carries the full Relax catalogue with the studio’s RTP transparency policy applying to Relax titles too — useful for verifying you’re playing the top-RTP versions of Book of 99 and Marching Legions.
• Unibet / 32Red — both Kindred-group casinos with deep Relax integration following the 2021 acquisition. Strongest Money Train series promotional treatment.
• PlayOJO — full Relax catalogue with PlayOJO’s signature “no wagering ever” approach to bonuses. Strong for Book of 99 (high RTP + no wagering = best long-run value).

Welcome bonus eligibility for Relax slots

Most UK casinos accept Relax slots for welcome-bonus play, though check the bonus T&Cs — the very-high-volatility Money Train titles are sometimes excluded due to high-variance bonus rounds that could exploit promotional structures. Book of 99 is universally accepted for bonus wagering and is one of the strongest titles for clearing requirements due to its 99% RTP.

Mobile and UK availability

Every Relax slot is HTML5-native and runs on iOS and Android browsers. The Money Train series in particular has been mobile-optimised from launch — the Money Cart bonus screen translates well to portrait orientation. Older titles (the original Money Train, Temple Tumble Megaways) have been retrofitted for mobile but the UX is functional rather than polished.

Responsible gambling

The Money Train series and Relax’s other flagship slots run extremely high volatility — long dry spells between meaningful payouts are the norm, not the exception. The 150,000x max win on Money Train 4 sounds great until you realise how rare it is. Set a budget before you start, never chase losses, and only gamble with money you can afford to lose.

All UK-licensed casinos are required by the UK Gambling Commission to offer a range of tools to help you stay in control:

Deposit limits: set a daily, weekly or monthly cap so you can’t deposit more than you’ve decided to spend.

Loss limits and session limits: automatically log out or stop play after a set time or loss amount.

Reality checks: on-screen reminders showing how long you’ve been playing and how much you’ve spent or won.

Time-out and self-exclusion: short cooling-off periods, or — through GamStop — full self-exclusion from every UKGC-licensed casino in the UK simultaneously.

If your gambling stops being fun, free, confidential help is available 24/7 from BeGambleAware or the National Gambling Helpline on 0808 8020 133.

You must be 18 or over to gamble. Always check the full terms of any bonus before opting in.