Relax Gaming Slots: Money Train, RTPs and Features

Relax Gaming, founded in 2010 and based in Malta, is both a slot studio and an aggregator distributing more than 4,000 games from over 70 partner studios. Its own slots include the Money Train series (max wins up to 150,000x) and Book of 99 (99% RTP). 7 casinos reviewed on BetsAuthority list Relax. Our Relax slot reviews are below.

Relax Gaming at a Glance

Relax Gaming works on two levels. As a B2B supplier it connects operators to more than 4,000 casino games across over 700 operator brands through a single integration. As a studio it builds its own slots, of which the Money Train series is the best known. Partner studios join through two programmes: Silver Bullet, launched in 2018, for smaller studios that use Relax’s distribution, and Powered By Relax, for studios that also run on Relax’s technology. Relax also supplies poker and bingo products.

Because of the aggregation side, a casino that lists “Relax Gaming” as a provider may be receiving games from Relax’s partner studios through the same feed. The games in the grid above and the table below are Relax’s own titles.

The Money Train Series

Money Train started in 2019 as a 5×4, 40-line Wild West slot with a hold-and-respin bonus, the Money Cart Bonus Round. In that round, special characters (collectors, payers, sniper, necromancer and others) collect and multiply cash values on a grid that can grow. Each sequel added characters and raised the ceiling:

Money Train 4 was billed as the final game in the series, but Relax announced Money Train 5 for a network release in September 2026. Bet ranges narrow as the max win grows: Money Train 2 allows up to 20 per spin, Money Train 3 up to 10 and Money Train 4 up to 6. For how hold-and-respin bonuses work in general, see the hold and win guide.

Other Notable Releases

Iron Bank and Beast Mode were built with the CasinoGrounds community. Hellcatraz uses countdown mystery symbols that reveal when their number reaches zero, and unlocks Super Free Spins after 2,000 collected keys.

RTP Versions

Relax publishes a standard RTP of 96.1%–96.5% for most games, with lower versions for specific markets: 92% for the UK on several titles and 90% for Germany. Money Train 3 lists 96.10% plus 94%, 92% and 90% options. Offshore casinos can install any of them. Book of 99 is the exception at 99%, among the highest returns of any commercial slot; at that rate the expected loss on A$1,000 staked is A$10, against A$39 at 96.1%. The high RTP pokies guide lists comparable games, and the RTP check walkthrough shows how to confirm the installed version.

Which Relax Games to Start With

The Relax catalogue splits into three risk profiles. Book of 99 and Snake Arena (2,758.8x max win) are the most contained; Book of 99 is still high volatility, but its 99% RTP gives the lowest expected cost of any game here. Temple Tumble Megaways and Iron Bank sit in the middle, each letting the player choose between three free spins modes with different risk levels. The Money Train games, Hellcatraz (51,840x) and Dead Man’s Trail (50,000x) are at the top end, where most of the return comes from a bonus round that may take several hundred spins to trigger. Our volatility guide shows how to size stakes for each group.

Demo Play from Australia

Relax offers free-play versions through its demo launcher and partner casinos, and availability depends on the visitor’s location. Unlike Push Gaming, Nolimit City and ELK Studios, whose official demos we confirmed are blocked from Australia, we have not confirmed a blanket Australian block for Relax; if a demo does not open, the casino lobby may run its own. Real-money play is available at the casinos on the Relax Gaming casinos page.

Frequently Asked Questions

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