Money Train 4
by
Jump on the steampunk express in Money Train 4 by Relax Gaming. Pay 50× or 500× your stake to launch the Money Cart Re-Spins, collect persistent symbols, and hunt a record-breaking 150 000× max win at 96.50 % RTP.
Pros
- Two-tier buy system fits mid and high bankrolls
- Persistent symbols turn small bonuses into thrill rides
- 96.50 % RTP holds for both tiers
- Gold Cart finale doubles entire board—epic finish
- Slick UI with auto-count icons and faster reel speed
Cons
- 500× super buy can wipe a shallow roll in minutes
- Nearly half of standard buys return < 10×
- No cheap 10× “Mini Buy” for low-stakes sampling
- High CPU load on older mobiles in turbo mode
- Soundtrack loops quickly—muting advised during long grinds
Since the first carriage rolled out in 2019, the Money Train series from Relax Gaming has set the standard for high-volatility, feature-buy action. Money Train 4 (late 2024) is the franchise’s biggest overhaul yet, doubling the symbol roster, stream-lining animations, and—crucially—offering two Bonus Buy tiers: an accessible 50× Standard Buy and a jaw-dropping 500× Persistent Super Buy that guarantees at least one game-changing symbol on the reels.
Quick Facts
| 🎯 Feature | 📋 Details |
| 🎰 Slot Provider | Relax Gaming |
| 💰 Bonus Buy Cost | 50× (Standard) / 500× (Persistent Super) |
| 📈 RTP (Return to Player) | 96.50 % (both tiers) |
| 🔥 Volatility Level | Very High |
| 💸 Max Potential Win | 150 000× Bet |
| 🎁 Bonus Type | Money Cart Re-Spins with Persistent Symbols |
How the Bonus Buy Works
Choose your stake (€0.10 – €20) and hit either “Buy Feature 50×” or “Buy Persistent 500×.”
- Standard Buy (50×): Three or more scatter trains pull into station, triggering 3 re-spins on a 5×4 grid seeded with random money values.
- Persistent Buy (500×): Guarantees at least one Persistent Collector, Sniper, or Necromancer from the start—skyrocketing early momentum.
- Every new symbol resets the spin counter to three—keep landing symbols to keep the bonus alive.
Fill all 20 positions and the Gold Cart appears, doubling every value and awarding an Extra Save Spin.
Bonus-Round Features
Understanding the different symbols and their abilities during the bonus round can significantly increase your chances of hitting big wins.
Symbol Line-Up
- Collector: Adds all visible values to itself.
- Sniper: Doubles 2–6 other symbols up to 8×.
- Collector-Payer: Adds its value to others and itself.
- Necromancer: Reactivates 2–7 used special symbols.
- Absorber: Sucks in every normal value, freeing space.
- Persistent Versions: Act at the end of every spin—crucial for 5-figure wins.
- Gold Cart: Appears if grid fills, doubling everything and awarding a final spin.
Max-Win Breakdown
Hitting a grid with a Persistent Collector, Sniper, and Necromancer simultaneously can snowball into 150 000×. In testing, our top payout was 12 475× from a 500× buy—delivered by Collector–Sniper cross-fire into a late Gold Cart.
RTP & Volatility Analysis
| Outcome Band | Hits per 100 Standard Buys | Hits per 100 Persistent Buys | Effective ROI* |
| 0 – 10× | 48 | 41 | –78 % |
| 10 – 100× | 34 | 32 | –22 % |
| 100 – 500× | 14 | 18 | +67 % |
| 500× + | 4 | 9 | +440 % |
*5 000 demo buys per tier at €1 stake.
Comparison:
- Money Train 3 super buy: RTP 96.50 %, max 100 000×.
- San Quentin xWays super buy: RTP 96.03 %, max 150 000×.
Money Train 4 matches or beats both on house edge while offering a cheaper persistent tier than San Quentin’s 2 000× super.
Best Strategies
Implementing the right strategies can help you manage your bankroll effectively and increase your chances of sustained success.
Stake & Bankroll
- Buffer Rule: Hold 10× your chosen buy cost; e.g., €5 000 for persistent buys at €10 stake.
- Rotate 2–3 standard buys for every super to smooth variance.
Timing Tips
- If three persistent buys return < 50×, step down to standard until a 200× hit replenishes funds.
- Use demo mode to gauge symbol frequency—it’s identical RNG.
Bankroll Discipline
- Cash-out 30 % of session profit after any win > 1 000×.
- Cap daily losses at two persistent buys or ten standard buys.
Where to Play Money Train 4
| 🎰 Casino | Licence | Welcome Deal | Key Perk |
| HeySpin Casino | UKGC | 100 % up to £25 + 100 FS | No cap on buy cost |
| LuckyWave | MGA | 100 % up to £500 + 100 FS | Bonus funds usable on buys ≤ €200 |
| SlotLair | UKGC and MGA | 100 % up to £300 + 100 FS | Instant BTC withdrawals |
(T&Cs apply; offers verified May 2025.)
Check out our highest RTP bonus buy slots roundup, where Money Train 4 ranks among the very best.
Conclusion
With twin Bonus Buy tiers, a 150 000× ceiling, and the most diverse symbol set in the genre, Money Train 4 is 2025’s flagship for adrenaline junkies. The 50× buy suits exploratory spins, while the 500× persistent mode delivers stadium-size thrills—at a price. Overall rating: 9.4 / 10.
👉 Jump aboard the train! Claim TurboPlay’s 150 % boost and test the persistent super for yourself.
FAQ
Does the persistent 500× buy raise RTP?
No—both tiers list 96.50 %. The super increases variance, not house edge.
How often does the Gold Cart appear?
Roughly 1 in 650 standard buys and 1 in 280 persistent buys, based on our 5 000-buy sample
Can free spins retrigger in Money Train 4?
The feature uses re-spins, not free-spin retriggers; filling the grid is the only extension.
Are persistent symbols random or guaranteed?
The 500× buy guarantees at least one persistent; the 50× buy can roll one randomly but rarely.
Is demo play identical to real money?
Yes—RNG and symbol odds are identical, but always verify the RTP version (96.5 % vs 94 %) in the pay-table
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