Money Train 4 Quick Facts

FeatureDetails
ProviderRelax Gaming
Release Year2023
Reels & Rows6x6 grid
Paylines / WaysScatter Pays (8+ matching symbols)
RTP96.10% (default) — 96.50% on feature buy
VolatilityExtreme (5/5)
Max Win150,000x bet
Min Bet£0.10
Bonus BuyYes — 100x bet, or 500x for the persistent version
Available at Non-GamStop CasinosYes

Where to Play Money Train 4 Not on GamStop

Money Train 4 is a genuinely extreme slot, and the casino you choose changes what you can actually do with it. The two things that matter most are whether the operator sells the feature buy and whether it runs the 96.10% build rather than a reduced-RTP configuration. Every site below was checked for both, and all five accept UK registrations without a GamStop check.

1. 1RED Casino — Best for High Stakes

Welcome Offer: 155% bonus up to £5,100 + 100 Free Spins. Verdict: Supports the full £0.10–£6 stake range and both feature buy options, including the 500x persistent buy that most operators omit. Licensed under Curaçao eGaming (8048/JAZ) and carries Relax Gaming's full catalogue. Read our full 1Red review.

2. MYSTAKE Casino — Best for Crypto Players

Welcome Offer: 170% crypto bonus + 70% reload. Verdict: The strongest option if you want to fund a 500x buy in crypto — BTC and ETH deposits clear in minutes and withdrawals are typically sub-60-second. Accepts UK players under its Curaçao licence. Read our full MyStake review.

3. INSTASPIN Casino — Best for Fast Payouts

Welcome Offer: welcome package up to £1,000 + 100 Free Spins. Verdict: Fastest verified payouts of the five, which matters on a slot where a single bonus round can settle for four figures. Runs the standard 96.10% build rather than a reduced-RTP configuration. Read our full InstaSpin review.

4. GRANSINO Casino — Best for Value

Welcome Offer: 100% up to £1,000, plus up to 20% weekly cashback with no wagering. Verdict: Up to 20% weekly cashback with no wagering attached, which meaningfully softens the dead streaks an extreme-volatility slot produces. The best choice if you plan long sessions rather than a handful of buys. Read our full Gransino review.

5. KINGHILLS Casino — Best for Free Spins

Welcome Offer: 100% up to £500 + 200 Free Spins across first 5 deposits. Verdict: 200 free spins across the first five deposits gives you the cheapest way to get time on the reels before committing real stakes to a buy. Curaçao licensed and supports the full stake range. Read our full KingHills review.

About Money Train 4: Game Overview

Money Train 4 is the fourth and final entry in Relax Gaming's Money Train series, released in September 2023 and still one of the most-played high-volatility slots at non-GamStop casinos in 2026. It is the game that made "150,000x" a normal thing to say out loud, and it remains the benchmark other studios are measured against.

The series has always run on the same premise: a stripped-back base game that exists mainly to deliver you into the Money Cart bonus, where the actual game lives. Money Train 4 keeps that structure but rebuilds the maths around a 6×6 grid using a scatter pays engine rather than the payline model of earlier entries. You no longer need symbols to land in a particular pattern — you need eight or more matching symbols anywhere on the grid in a single spin.

What separates it from Money Train 2 and Money Train 3 is the modifier depth. The bonus round carries more than 20 distinct special symbols, and the interactions between them are where the extreme wins come from. A Collector that upgrades mid-round, or a Sniper that hits a Persistent Payer, can move a bonus from a 40x result to a four-figure multiple in three spins.

It is worth being direct about what that means: this is not a slot for grinding a bonus balance. The hit frequency is 20.14%, or roughly one winning spin in five, and the overwhelming majority of those wins return less than your stake. Money Train 4 is built to be volatile, and it delivers on that with no cushioning whatsoever.

How it compares to the rest of the series

If you have played the earlier games, the differences are worth knowing before you commit a stake. Money Train 2 is the one most players remember fondly — a 50,000x ceiling, a tighter set of modifiers, and bonus rounds that resolve quickly enough to stay readable. Money Train 3 doubled the ceiling to 100,000x and added the persistence mechanic that Money Train 4 now builds its entire identity around.

Money Train 4 raises the ceiling again to 150,000x, but the more meaningful change is structural. Moving to a 6×6 scatter pays grid means the base game behaves differently — wins can land anywhere rather than along fixed lines, and the cascade sequences run longer. The bonus round carries roughly twice the modifier variety of Money Train 2, which widens the distribution at both ends: more rounds that fizzle, and a genuinely higher tail.

In practice, if you found Money Train 3 punishing, Money Train 4 will not feel like relief. It is the most extreme game in the series by some distance, and the 150,000x figure is not a marketing number bolted onto a gentler maths model — the variance is real and you will feel it inside twenty spins.

How to Play Money Train 4 at Non-UK Casinos

Stakes run from £0.10 to £6 per spin. That upper limit is unusually low for a slot of this profile, and it is deliberate — with a 150,000x ceiling, a £6 spin already carries a theoretical £900,000 maximum, which is beyond most operators' single-win liability caps.

The base game is straightforward. Land 8+ matching symbols anywhere on the 6×6 grid for a win. Winning symbols are removed and new ones drop in, and the sequence continues while wins keep landing. Separately, the Streak Respins feature can trigger on any spin, locking symbols in place and respinning the remainder to build toward the bonus.

Landing four or more Bonus symbols triggers the Money Cart round — 3 respins that reset each time a new special symbol lands, played out on a grid that expands as you unlock rows. This is the part of the game that matters, and it is where essentially all of the slot's return is concentrated.

At non-GamStop casinos you also have the feature buy, which UK-licensed sites cannot offer at all. Two options exist:

  • 100x bet — the standard Money Cart bonus.
  • 500x bet — the same bonus but starting with one guaranteed persistent special symbol, which materially raises the ceiling of the round.

Buying the bonus also shifts the RTP upward to 96.50%, from 96.10% in the base game. That is not a marketing quirk — feature buys on this game are mathematically slightly better value than spinning in, though "better value" on an extreme-volatility slot still means most buys lose.

Money Train 4 Features & Mechanics

The Money Cart bonus is the whole game, so it is worth understanding what actually appears on the reels.

Persistent symbols

Certain special symbols stay active for the remainder of the bonus rather than paying once and vanishing. A persistent Collector or Payer landing early is the single strongest thing that can happen in a round, because every subsequent respin compounds its effect.

Collectors, Payers and Sniper

Collectors gather the values of all other symbols on the grid and add the total to themselves. Payers pay out their own value. Snipers target specific symbols and boost them. When a persistent Collector shares a grid with several Payers, values escalate very quickly — this is the standard route to a five-figure multiplier.

Upgraders and Resetters

The Upgrader can add persistence to up to three existing special symbols, effectively converting an ordinary round into a compounding one. Resetters restore your respin counter, extending a round that was about to end.

Streak Respins

The base-game feature that gives Money Train 4 a pulse between bonuses. Symbols lock, the rest respin, and the sequence can build directly into a bonus trigger. It will not rescue a bad session, but it is the reason the base game is not entirely dead.

The design intent is clear enough: almost every bonus round resolves modestly, and a small proportion of rounds compound into something enormous. That distribution is the product. It is not a flaw to be strategised around.

Why UK Players Play Money Train 4 Off-GamStop

This is the section where Money Train 4 makes an unusually concrete case, because the restrictions are specific and measurable rather than vague.

The feature buy does not exist at UK casinos

The UK Gambling Commission prohibits operators from selling bonus features. At a UKGC-licensed casino, Money Train 4's 100x and 500x buys are simply absent from the interface. Given that the Money Cart round is where effectively all of the game's return is concentrated, removing the buy removes a large part of what the game is.

The £5 stake cap sits below the game's own maximum

Since 2024, online slot stakes in Great Britain are capped at £5 per spin (£2 for players aged 18–24). Money Train 4's maximum bet is £6. This is one of the rare cases where a UK player literally cannot access a slot's full stake range on a licensed site — the cap cuts into the game as designed, not just into high-roller play.

Autoplay is unavailable

Autoplay has been prohibited in Great Britain since October 2021, along with spin speeds below 2.5 seconds. Offshore builds retain autoplay of up to 1,000 spins.

GamStop coverage

Casinos licensed outside the UK are not part of the GamStop scheme. That is precisely why they are accessible — and precisely why you should read the responsible gambling section at the end of this page before depositing. These sites sit outside UK regulatory protection, and the safeguards you are used to are not there.

RTP, Volatility & Max Win Explained

RTP: 96.10% default. This is slightly above the industry average of roughly 96%, and higher than most slots with comparable ceilings. Buying the feature raises the theoretical return to 96.50%.

Check which build you are playing. Relax Gaming ships Money Train 4 in multiple RTP configurations, and operators choose which to license. Alongside the 96.10% default there are 94.10% and 90% builds in circulation. A 6% gap is enormous — it is roughly the difference between a competitive slot and an unplayable one. The figure is disclosed in the game's own information panel, and it takes about ten seconds to check. Do that before your first spin at any new casino, offshore or otherwise. Every operator listed on this page was verified as running the 96.10% build at the time of review, but configurations can change without notice.

Volatility: extreme, 5/5 on Relax Gaming's own scale. The studio does not soften this in its own materials. Expect long stretches with no meaningful return.

Max win: 150,000x your stake. At the £6 maximum that is £900,000. It is a real, achievable outcome in the maths model rather than a theoretical artefact — but it is also vanishingly rare, and structuring a session around reaching it is the fastest way to lose more than you intended. Treat the figure as an indication of how the variance is shaped, not as a target.

Hit frequency: 20.14%. Roughly one in five spins returns something. Most return less than the stake.

Money Train 4 Strategy Tips

No strategy changes the RTP of a slot. What follows is about controlling exposure and making informed choices, not about beating the game — that is not possible.

1. Decide between spinning and buying before you start

These are two different games financially. A 100x buy at £1 costs £100 and resolves in under a minute. Mixing approaches mid-session is how bankrolls disappear without you noticing.

2. Size buys against your total budget, not your balance

A 500x buy at £1 stake is £500. If that is more than a modest fraction of what you set aside, the buy is too large regardless of how attractive the persistent symbol looks.

3. Verify the RTP build first

The single highest-value habit on this game. A 90% build costs you six percentage points of return for identical gameplay and identical entertainment.

4. Expect the median, not the maximum

The typical Money Cart round pays a modest multiple of your trigger cost. Five-figure rounds are the exception the game is famous for, not the outcome you should be planning around.

5. Use deposit limits, especially offshore

Non-GamStop casinos do not apply UK affordability checks. Set your own deposit and loss limits in the account settings before you play, while you are still making a calm decision.

6. Do not chase a bonus round

Extended dead streaks are the design working as intended, not a sign that a bonus is due. Slot outcomes are independent — a long drought makes the next spin no more likely to pay.

Frequently Asked Questions

What is the RTP of Money Train 4?

The default RTP is 96.10%, rising to 96.50% when you buy the feature. Relax Gaming also ships 94.10% and 90% builds, and operators choose which to run — always check the game's information panel before playing.

What is the maximum win on Money Train 4?

150,000x your stake. At the £6 maximum bet that equates to £900,000. It is an extremely rare outcome and should not be treated as a realistic session target.

Can I buy the bonus on Money Train 4 in the UK?

Not at a UKGC-licensed casino. The UK Gambling Commission prohibits operators from selling bonus features, so the buy options are removed entirely. They are available at the non-GamStop casinos listed on this page.

How volatile is Money Train 4?

Extreme — 5 out of 5 on Relax Gaming's own scale. The hit frequency is 20.14%, so roughly one spin in five returns something, and most of those return less than the stake.

What is the difference between the 100x and 500x feature buy?

The 100x buy gives you the standard Money Cart bonus. The 500x buy starts the round with one guaranteed persistent special symbol, which significantly raises the ceiling of that round but costs five times as much to enter.

Is Money Train 4 better than Money Train 3?

It has a higher ceiling — 150,000x against Money Train 3's 100,000x — and a deeper set of bonus modifiers on a 6x6 scatter pays grid rather than the earlier payline model. Whether that is better depends on whether you want more variance or less.

Why can't I bet £6 per spin at a UK casino?

Great Britain caps online slot stakes at £5 per spin (£2 for players aged 18–24). Money Train 4's maximum is £6, so the full stake range is unavailable on UKGC-licensed sites.

Is it safe to play Money Train 4 at non-GamStop casinos?

The game itself is identical software from Relax Gaming. The difference is regulatory: offshore casinos sit outside UK Gambling Commission protection and outside GamStop self-exclusion, so dispute resolution and affordability safeguards are weaker. Set your own limits before depositing.

Responsible Gambling

TopNonUKCasinoSites.com features casinos for adults aged 18 and over. Gambling should remain entertainment — never a financial strategy. If gambling is affecting you or someone you know, visit BeGambleAware.org or call 0808 8020 133. GamCare provides free confidential support. Set deposit limits, loss limits, and session timers at your chosen operator before depositing real funds. For our full list of tested operators, see the non UK casinos for UK players we recommend for UK players.

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