Relax Gaming Slots
The Studio Behind Money Train
Relax Gaming is best known as the home of the Money Train series, whose bonus round is one of the most copied feature designs in modern slots. The persistent-symbol collection mechanic that the series popularised now appears, in some form, across dozens of studios’ catalogues. As with BTG and Megaways, Relax set a template the rest of the industry followed.
Beyond Money Train, Relax operates a dual identity: it makes its own high-quality titles and it runs a “Powered by Relax” platform that distributes other studios’ games. For a player, what matters is the in-house catalogue, and that catalogue leans hard into high-volatility, bonus-driven design.
The Money Train Bonus Is the Blueprint
Money Train 4 is the current flagship and the clearest expression of what Relax does. The respin bonus round is the whole game: you trigger it, and persistent money symbols and special symbols lock in place while you get respins that reset each time a new symbol lands. The special symbols, collectors, payers, multipliers, persistent symbols that upgrade, interact in ways that can snowball a quiet bonus into a screen-filling payout.
The Money Train series carries some of the highest max-win ceilings and most extreme volatility of any mainstream studio: these are genuinely punishing games in the base state, with everything reserved for the respin round. The 96.40% RTP on the series is respectable, but the variance is at the extreme end. This is the mechanic Hacksaw, Pragmatic and others have been chasing since the original Money Train 2 broke through.
The House Style: Persistent Symbols and Respin Rounds
Relax’s in-house titles repeatedly return to a core idea: a bonus round where symbols lock in place and respins build a position over time, rather than a free-spins round where each spin is independent. This persistent-state design is what produces the studio’s signature snowball moments, and it is mechanically distinct from the tumble-and-multiplier model that Pragmatic favours or the reel-expansion model that Nolimit uses.
The practical upside is that a Relax bonus round, once triggered, has a sense of progression: you watch a position build. The downside is the same as every high-volatility studio: triggering the bonus is hard, and base-game play is a grind until you do.
The In-House Titles Beyond Money Train
Relax is more than one series, even if Money Train casts the longest shadow. Temple Tumble and its Megaways sequel are well-regarded cascade titles. Iron Bank, Snake Arena, Marching Legions and Erik the Red show the studio applying its persistent-symbol thinking to different themes, while Hellcatraz and Beast Mode push toward the extreme-ceiling end. Several recent releases also plug into the studio’s Dream Drop jackpot: a network progressive where a portion of every bet across all connected games feeds a shared pool. The Dream Drop is a genuine draw, but treat it the way you would any progressive: the headline figure is funded by players, and chasing it does not improve your odds on the base game.
Bankroll Requirements
The Money Train titles are among the most volatile in the industry, comparable to the harshest Hacksaw and Nolimit releases. Budget 250 to 300x your spin stake and set a firm loss limit. Where a bonus buy is offered it is priced high, because the respin round is where essentially all the value sits, and buying a cold run of bonuses is the quickest way to lose a session. Treat any buy as paid entertainment, not a strategy. See the bankroll guide for the full picture.
Who Relax Suits
Relax is for experienced high-volatility players who appreciate the persistent-symbol respin design and want the studio that invented it rather than an imitation. If you enjoy the Money Train style of bonus, building a position over a series of respins, the originals do it best.
It is not a studio for beginners or tight budgets. The Money Train series in particular demands real bankroll and real discipline. If you are newer, learn on medium-volatility titles from Play’n GO first. For players who already love this risk profile, Push Gaming offers a slightly gentler high-volatility experience and Hacksaw Gaming a harsher one.
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