Money Train 4
This demo version does not require any deposits and is for informational purposes only. Play responsibly – BeGambleAware.org. 18+.

Money Train 4 Demo Play

The Money Train 4 demo lets you jump into a volatile, post-apocalyptic heist world where symbol clusters and explosive modifiers can snowball into huge wins without any financial risk.

Relax Gaming
2 games
96.1%
Return to player
£0.1
Min bet
150000x
Max win
high
Volatility
About the game

Money Train 4 is a Relax Gaming release that drags us back to its dusty, chaotic frontier, complete with familiar outlaws and an absurd arsenal of reel-breaking features. The game leans on its trademark Money Cart mechanic, turning every bonus entry into a chain reaction of collectors, payers and shapeshifting symbols battling for screen space. If you’d like to get a feel for how this final chapter behaves before moving on to other titles, the Money Train 4 free play version is a handy starting point in our demo slots hub.

Top real money casinos with Money Train 4
Unibet
200 Free Spins on £10 Deposit
Welcome Bonus
Unibet review
#AD. New Unibet UK customers who deposit at least £10 via debit card can claim 200 free spins for Big Bass Bonanza. Free spins are worth £0.10 each and credited after deposit. Winnings from these spins are subject to a 30x wagering requirement and must be completed within 30 days of opt-in. Opt-in/claim timing and eligible payment methods apply; some slot titles are excluded from contributing to wagering. Withdrawals before wagering completion will cancel bonus funds. Full Terms & Conditions available at https://unibet.co.uk/
Hollywoodbets
Casino Welcome Bonus 100 Free Spins
Welcome Bonus
Hollywoodbets review
#AD. New UK Hollywoodbets customers who register and deposit at least £10 with Visa/Mastercard then wager a cumulative £10 on any slots within seven days will receive 100 free spins. Free spins are credited within 24 hours after qualifying requirements are met, valid for seven days, and produce winnings paid to cash balance. Maximum withdrawable winnings from these free spins are capped at £1,000. Offer valid once per customer/household/IP until 31 December 2025. Full Terms & Conditions available at https://www.hollywoodbets.co.uk/
7Bet Casino
Welcome Bonus 100% up to £50
Welcome Bonus
7Bet Casino review
#AD. 7bet offers new players a 100% first-deposit casino welcome bonus matched up to £50. Use promo code Welcome50 at the Cashier and deposit at least £10. Bonus funds are credited immediately after deposit. You must wager the bonus amount 40x within 30 days to convert bonus funds into withdrawable cash. Bonus money cannot be withdrawn directly until wagering is completed. Contact LiveChat or [email protected] for help. Full Terms & Conditions available at https://7bet.co.uk/
QuinnBet
STAKE £10 GET 50 FREE SPINS
Welcome Bonus
QuinnBet review
#AD. New UK QuinnCasino customers who register and stake £10 within 7 days receive 50 Free Spins on Big Bass Splash. Free Spins are worth £0.10 each; winnings are paid directly to cash balance and capped at £100. Spins are credited shortly after qualifying and must be used within 7 days. Offer is limited to one claim per person/household/IP and cannot be combined with other QuinnBet promotions. Full Terms & Conditions available at https://www.quinnbet.com/casino/
More games from Relax Gaming

Money Train 4: Slot Overview

Here, the base game builds pressure with scatter-pays that occasionally lock in for rolling respins, then the bonus swings the door open to a sandbox of persistent boosters, snipers and converters jostling for control. In our Money Train 4 review, we look at how these pieces interact rather than simply list them, because the thrill here is in the momentum—symbols chaining, rows unlocking, and runs that either fizzle fast or snowball into something outrageous.

Graphics & Sound: Post Apocalyptic Train Heist

Money Train 4 opens on a scorched frontier that’s somehow both familiar and ruined beyond repair: jagged cliffs and half-cybernetic skull glaring from the side. The symbols look carved out of scrap metal and desperation, while the whole interface sits bolted onto a steam-powered frame that shakes subtly with each spin. Hit the Money Cart, though, and the world snaps into darkness. The desert vanishes, replaced by a burning void threaded with neon circuitry. The reels stop looking like reels at all — more like a malfunctioning experiment, with multipliers crackling, pulsing and flashing as the chaos ramps up.

The audio follows the same trajectory. In the base game, you get a dry, industrial hum — the sound of gears turning somewhere deep inside a machine that hasn’t slept in years. Metallic clacks ride under each spin, the same gritty cadence players might remember from Money Cart 2. Step into the bonus and everything amplifies: sparks spit in stereo, multipliers land with an aggressive clang, and the whole mix feels like you’re standing inside an overheating engine. It’s not a soundtrack designed to be tuneful; it’s engineered to feel like the train is dragging you with it, full speed, into whatever comes next.

Main Game

Volatility & RTP

Money Train 4 runs on a deliberately brutal maths model, pairing extremely high volatility with a flexible RTP setup: most UK casinos offer the 96.10% version, though lower configurations such as 94% also exist. The ceiling is unapologetically sharp — a x150,000 max win.

How to Play Money Train 4

If you play Money Train 4 demo, the game runs on virtual FUN credits — you start with 5,000, and refreshing the page resets the balance back to that amount. Stake adjustments sit just to the left of the central spin button at the bottom of the screen, while the slot’s main menu is tucked into the lower-left corner.

Your current balance and last win readout sit on the right-hand side. Autoplay and spin-speed options aren’t available under UK rules, but in jurisdictions where they’re permitted, both can be configured directly through the in-game menu.

Game Symbols and Payouts

Money Train 4 uses a scatter-pays system, meaning wins come from landing a certain number of matching symbols anywhere on the grid rather than forming traditional lines. All shown below in x stake values for clarity.

Top symbols:

QuantityBearded banditYellow-painted faceGreen banditRed-haired cowgirl
8x1.2x1
10x2x1.5x1.2x1
12x10x5x2x1.5
15x20x10x8x6
20x35x20x15x10
25x50x30x25x20
30x100x50x40x30
36x1000x500x400x250

Low symbols:

QuantityRed spade / Yellow heartGreen club / Blue diamond
10x0.5x0.4
12x1x0.8
15x3x2
20x6x4
25x10x7.5
30x15x10
36x125x100

Money Train 4: Slot Features

Money Train 4 leans heavily on its feature ecosystem — a web of symbols that spring to life only once the bonus is underway. The base game keeps things simple, but the moment you enter the Cart, every modifier begins nudging, doubling or converting values, shaping the entire outcome of the round. Below is a quick primer so you know who’s who before the real chaos starts.

  • Non-Winning Symbol — an empty cell that does nothing except occupy space.
  • Bonus Symbol — reveals a random value between x1–x10 and helps trigger the Money Cart bonus.
  • Collector — gathers all visible values and adds them to itself.
  • Persistent Collector — repeats that same action after every spin.
  • Adjacent Collector — absorbs the values of the eight neighbouring symbols only.
  • Persistent Adjacent Collector — performs that local sweep after every spin.
  • Payer — adds its revealed value to all other visible symbols.
  • Persistent Payer — repeats the boost every spin, excluding itself.
  • Adjacent Payer — boosts only the symbols around it.
  • Persistent Adjacent Payer — repeats that boost each spin.
  • Sniper — doubles the value of 3–8 random symbols; can hit the same target multiple times.
  • Persistent Sniper — repeats the doubling at the end of every spin.
  • Collector-Payer — chooses 3–5 targets, collects their values, and redistributes the new total back to them.
  • Persistent Collector-Payer — performs the same action each spin.
  • Arms Dealer — converts 1–4 Bonus Symbols into random feature symbols.
  • Persistent Arms Dealer — converts one Bonus Symbol after every spin.
  • Necromancer — reactivates 2–7 used feature symbols.
  • Persistent Necromancer — revives 1–7 feature symbols at the end of each spin.
  • Persistent Shapeshifter — becomes a different feature symbol after every spin, immediately performing its new action.
  • Unlocker — opens a locked row, expanding the grid.
  • Reset Plus — increases the starting spin counter by +1 (can appear only once per round).
  • Upgrader — turns 1–3 regular feature symbols into Persistent versions.

Bonus Choice

During testing, the bonuses in Money Train 4 tended to appear roughly once every 150–250 spins, which is reasonable for a slot built around extreme volatility. You’re often waiting for the right cluster of scatters or a lucky chain of base-game respins, but when it finally pulls you into the Cart, the round can stretch out for a long time.

Below are the full conditions for the bonus modes:

Base Game Respin

  • A respin may trigger after any standard base-game spin, provided the spin didn’t also trigger the Money Cart bonus.
  • The game selects the symbol type that appeared most frequently on that spin; all copies of it remain sticky, and a respin begins.
  • New matching symbols become sticky, and each one adds an extra respin.
  • Multiplier icons may land during respins, adding an instant x-value to the total multiplier ladder and granting one extra respin, but they do not stick.
  • The respin sequence ends when no new sticky symbols or multipliers appear, and the final payout is the symbol-based win multiplied by the accumulated multiplier.

Money Cart Bonus 

  • It triggers when 3 or more Bonus Symbols (or gold Persistent versions) appear anywhere on the reels.
  • Triggering symbols reveal their x-values immediately, forming the starting setup for the round.
  • You begin with 3 spins, and each new symbol resets the counter back to 3.
  • Persistent symbols act before the very first spin, performing their abilities instantly.
  • The bonus starts on a 6×4 grid, and if a full row is filled, a new row unlocks above it (up to four extra rows).
  • Each feature symbol performs its ability right after landing, following the strict order: top to bottom, then left to right.
  • The round ends when the spin counter reaches zero, or when the total accumulated value hits the slot’s hard cap, forcing an instant payout.

Summary

The Money Train 4 slot feels like the natural endgame of the series — louder, meaner and far more intricate than anything that came before it. The familiar outlaw cast returns, but their abilities have evolved into a dense web of modifiers that interact with far more bite than in earlier instalments.

Compared with Money Train 2 and 3, this chapter pushes the volatility to its limits, pairs it with an enormous x150,000 cap, and sharpens the Money Cart into a full tactical gauntlet. It’s still recognisably Nolimit-style chaos, but the pacing, the upgraded symbol ecosystem and the extreme ceiling make it distinctly its own creature.

Players who enjoy long, high-risk arcs, where a single spin can swing the entire session, will feel right at home here. The mix of scatter-pays, respins and a bonus that can collapse or explode depending on how modifiers collide creates a level of depth that rewards patience. If you want a slot with character, brutal potential and a maths model that doesn’t pretend to be gentle, this finale delivers exactly that — and does so with style.

Thomas Hill | Content Editor
Thomas Hill
4 December 2025, 06:12
Money Train 4
Provider
Relax Gaming
Theme
Wild West
Reels × Rows
6x6
Bet Range (£)
0.1 - 2
Free spins
Progressive Jackpot
Mobile friendly
Release year
2023
Are You At Least 18 Years Old?
By entering this site, you are certifying that you are of legal adult age.