Money Train 4

Money Train 4 Slot Review

Relax Gaming keeps stretching its flagship series, and Money Train 4 is the most ambitious chapter yet. The studio took the steampunk-western world of the originals and bolted on a fourth reel set, a deeper Money Cart bonus, and a max win that leaves the earlier games looking almost modest. This is a 6x6 monster built for one thing: triggering the bonus and praying the modifiers chain. If you have played any entry in this lineage, you already know the appeal. Money Train 4 simply turns every dial higher.

Theme & Design

The aesthetic carries over intact. Rusted iron, desert dusk, outlaws in dusters, and that grinding mechanical soundtrack that signals a heist is brewing. The 6x6 grid feels denser than the older 5x4 layouts, and the bonus screen, where the action really happens, is laid out so you can track every special symbol without squinting. Relax has always been strong on atmosphere here, and the fourth game does nothing to break the spell. It just makes the train feel bigger and meaner.

Symbols & Payouts

The base game pays through scatter-style matching rather than lines, so clusters of eight or more symbols anywhere on the grid trigger wins. The character symbols carry the weight, while the card suits fill the gaps. Here is the verified paytable for the main symbols. 

Three or more Bonus Scatters fire the Money Cart round, which is where the 150,000x ceiling actually becomes reachable.

RTP, Volatility & Hit Frequency

At 96.10% RTP this sits right around the sweet spot for a high-variance Relax title, though the studio offers configurable RTP versions that operators can dial down. The base hit frequency is roughly one in five spins, but most of those are small line returns. The bonus is the only place the big numbers live. A few details that round out the picture: 

That 20.14% hit rate sounds generous until you remember the base game rarely pays more than your stake back. The Money Cart round is the whole show.

Money Train 4 Bonus Features

The Money Cart respin feature is the reason this series exists. You land three or more bonus symbols, the grid clears, and you get three respins that reset every time a new symbol lands. Twenty different modifier symbols then do the heavy lifting: Collectors gather values, Payers boost them, Snipers fire at other symbols, and Necromancers resurrect dead ones. Persistent variants stick around for the whole round, which is how collections snowball toward that six-figure multiplier.

Bonus Buy

Impatient players can buy straight into the Money Cart. The standard entry runs around 100x your stake, while the premium version that guarantees a persistent symbol jumps to roughly 500x. Steep, but it skips the long grind of waiting for a natural trigger. The series roots are worth a look too, since the original Money Train slot introduced the Money Cart mechanic that everything here is built on.

How to Play

Stakes run from $0.10 to $6 per spin, and the controls stay simple: set your bet, hit spin, or jump to the buy menu if you would rather not wait. Autoplay handles longer sessions and lets you cap losses. Because the base game is so bonus-dependent, I would treat every spin as a ticket toward the Money Cart rather than expecting steady returns along the way.

For a lighter take on the same studio's hold-and-collect style, Bill & Coin demo play on our platform runs a friendlier respin feature without the brutal volatility of this one. It is a sensible warm-up before you take on the full Money Train 4 grind, and the demo costs nothing to try.