Money Train 4

Money Train 4 is the fourth entry in a series that has spent six years doing one thing extremely well, which is making the bonus round the entire product. Relax Gaming released it in 2024, and it is the most extreme version of the idea so far.

Everything below is really about the Money Cart, because so is the game.

Money Train 4 Slot: the Basics

A western steampunk grid with lines paying left to right, stakes from £0.10 to £100 a spin, and a base game that exists for exactly one reason: to land three bonus symbols.

The base game does pay. It pays rarely and it pays small, and treating it as anything other than the cost of admission to the feature is a way to be disappointed slowly.

The Money Cart, and the symbol types

The bonus is a hold and respin round. The grid clears, you get three respins, and every new symbol that lands resets the counter back to three. The round ends when three consecutive respins produce nothing.

What makes it interesting is that the symbols are not all values. Collectors gather the value of every other symbol on screen. Payers push their own value into everything else. Sniper symbols fire at random positions and multiply them. Necromancers resurrect symbols that have already been collected, which sounds like a small thing and is not.

Persistent symbols stay active for the rest of the round rather than resolving once, and a Persistent Collector arriving early is the difference between a round worth 20x and a round worth several thousand.

The result is a bonus that builds an argument rather than paying a number. You can watch it going well or badly several respins before it resolves, which is rare and is the reason this series has the following it does.

The ceiling

The maximum win is 150,000x your stake, which is among the highest in general circulation and should be read as a statement about volatility rather than an opportunity.

A ceiling that high exists because the distribution has an extremely long tail, which is true of every progressive jackpot slot and true of this one without a jackpot attached. The same expected return has to come from somewhere, and it comes out of every ordinary session, which is to say yours.

RTP and volatility

Relax quotes around 96.1% for the standard configuration, with lower versions available to operators. Check the information screen at the casino you are using before you spin.

Volatility is at the top of the scale and is not a marketing claim. This is a game where a hundred spins returning almost nothing is the normal case rather than a bad run.

Conclusion

Money Train 4 is the best executed version of a design that was already good in 2019, and it is more punishing than any of the three that came before it.

The Money Cart remains the most watchable bonus round in slots. Getting into it costs more than most players expect, and the honest way to approach this game is to decide what a session is worth to you before you start, which is the whole argument of our guide to safe online casinos rather than after the fourth dry hundred.

18+. Gambling should be entertainment, not income. Long term the house wins. Free and confidential help is at BeGambleAware.org.