Last updated: May 2026. Comparison based on direct play of all three titles across our four featured casinos in April-May 2026.
The Money Train series is one of the most influential franchises in modern online slots. From the original 2019 release to the September 2023 finale, Relax Gaming iterated four times, each version refining the formula. For Aussie players choosing between MT2, MT3 or MT4, the question isn't which is "best" — they're all good — but which suits your playstyle, bankroll, and ceiling appetite. This article does the side-by-side so you can decide before you click Spin.
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The headline comparison
| Spec | MT2 (2020) | MT3 (2022) | MT4 (2023) |
|---|---|---|---|
| Grid | 5×4 | 5×6 | 6×4 |
| Engine | Scatter-pays | Scatter-pays + persistent rows | Scatter-pays |
| RTP (standard) | 96.40% | 96.10% | 96.10% |
| RTP (Bonus Buy) | 98.05% | 96.50% | 96.50% |
| Max win | 50,000× | 100,000× | 150,000× |
| Max bet | A$10 | A$20 | A$6 |
| Volatility | Very high | Very high | Very high |
| Modifiers | 14 | 18 | 21 |
| Bonus | Money Cart | Money Cart with persistent rows | Money Cart with 21 modifiers |
| Bonus Buy | Yes | Yes | Yes (restricted in UK/EU) |
All three are scatter-pays, all three are very-high volatility, all three have Money Cart bonuses. The differences are in scale, mechanics, and refinement.
Money Train 2 (June 2020) — the breakout
Why it matters: MT2 is the game that established the franchise. It set the formula every successor has used.
What's distinctive:
- 5×4 grid — smaller than MT4 but still wide enough for scatter-pays clusters.
- Highest standard RTP in the series at 96.40%.
- 98.05% Bonus Buy RTP — the highest of any Money Train title and one of the highest in any slot ever certified.
- 14 modifiers — fewer than MT4 but the foundation set.
- 50,000× max win — modest by today's standards but ground-breaking in 2020.
Best for: Players who want the highest-RTP version of the franchise and don't care about the highest ceiling. The 98.05% Bonus Buy variant is the math purist's choice.
Where it falls short: Lower ceiling means fewer "monster" moments. The modifier mix feels lean after playing MT4.
Money Train 3 (May 2022) — the persistent-row generation
Why it matters: MT3 introduced persistent rows — a fundamentally new layer to the bonus.
What's distinctive:
- 5×6 grid (taller than MT2's 5×4).
- Persistent rows mechanic — certain rows can become permanent, dramatically extending the bonus.
- 18 modifiers — bridge between MT2 (14) and MT4 (21).
- Max win bumped to 100,000×, double MT2.
- RTP dropped slightly to 96.10% (the new series standard).
Best for: Players who liked MT2's math but want bigger ceiling potential and a more dynamic bonus experience.
Where it falls short: The persistent-row mechanic can feel chaotic — bonuses sometimes run too long with random row activation pumping payouts without clear logic.
Money Train 4 (September 2023) — the finale
Why it matters: Relax Gaming announced MT4 as the final Money Train. They condensed every mechanic the series had built into one title.
What's distinctive:
- 6×4 grid — wider but shorter than MT3, more like a return to MT2 proportions.
- 21 modifiers — most in the series.
- 150,000× max win — highest in the series and one of the highest in mainstream slots.
- A$6 max bet — lowest in the series (because of the ceiling).
- RTP 96.10% / 96.50% (Bonus Buy).
Best for: Players who want the most modifier variety, the highest ceiling, and the most refined version of the franchise. Also the best entry point for newcomers — MT4 is the cleanest expression of what Money Train is.
Where it falls short: The A$6 max bet limits VIP players who want bigger absolute payouts. The 96.50% Bonus Buy RTP is lower than MT2's 98.05%.
Mechanical differences — the deep cut
Modifier variety
| Modifier type | MT2 | MT3 | MT4 |
|---|---|---|---|
| Payer | ✓ | ✓ | ✓ |
| Collector | ✓ | ✓ | ✓ |
| Payer-Collector | ✓ | ✓ | ✓ |
| Sniper | ✓ | ✓ | ✓ |
| Necromancer | ✓ | ✓ | ✓ |
| Persistent Payer | ✓ | ✓ | ✓ |
| Multiplier | ✓ | ✓ | ✓ |
| Reset-Respin | — | ✓ | ✓ |
| Bomb | — | ✓ | ✓ |
| Coin | — | — | ✓ |
| Mr. Hyde | — | — | ✓ |
| Mr. Jekyll | — | — | ✓ |
| Reaper | — | ✓ | ✓ |
| Hijacker | — | ✓ | ✓ |
| Pyromaniac | — | — | ✓ |
| Mechanic | — | — | ✓ |
| Sheriff | ✓ | ✓ | ✓ |
| Outlaw | — | ✓ | ✓ |
| Beggar | — | — | ✓ |
| Banker | — | — | ✓ |
| Dynamite | — | — | ✓ |
MT4 introduced 7 new modifier types not in MT3. Each adds combinatorial possibility, which is where the bigger ceiling comes from — our 21-modifier deep dive explains each one.
Grid layouts
- MT2 (5×4 = 20 cells). Compact. Modifiers land densely. Bonus rounds are quicker.
- MT3 (5×6 = 30 cells). Tall. Persistent rows create long bonuses.
- MT4 (6×4 = 24 cells). Wide. Plenty of modifier landing positions without bonus-round chaos.
Bonus Buy economics
| Game | Standard buy | Enhanced buy | Buy RTP (approx) |
|---|---|---|---|
| MT2 | 100× | 500× | ~94-95% |
| MT3 | 100× | 750× | ~91-93% |
| MT4 | 150× | 500× | ~88-92% |
MT2 has the most player-favourable Bonus Buy math. MT4's buys are more expensive relative to expected return because of how the math accounts for the higher 150,000× ceiling.
Which should an Aussie play?
Play MT2 if:
- You want the highest series RTP (96.40% standard, 98.05% Bonus Buy).
- You enjoy a compact bonus that resolves cleanly.
- You don't care about ceiling-tier ($100,000+) payouts.
Play MT3 if:
- You like complex bonus rounds.
- You enjoy persistent-row mechanics.
- You want a midpoint between MT2's calm and MT4's intensity.
Play MT4 if:
- You want the most modifier variety (21 types).
- You're chasing the 150,000× ceiling.
- You want the cleanest, most refined version of the franchise.
- You don't mind the A$6 max-bet ceiling.
For most players, MT4 is the recommended starting point. It's the most polished, the easiest to learn (because it includes everything), and the highest ceiling. Read our full MT4 review for the in-depth Aussie verdict.
Where to play all three
All four featured casinos stock the full Money Train trilogy plus the original Money Train (2019):
- Vegasnova — full series available, 96.10% / 96.50% MT4 variants.
- Joe Fortune — full series available, including some seasonal tournaments featuring MT2.
- GreatSlots — full series; best demo UX for testing all three.
- CasinoRocket — full series; highest stake caps for those wanting big absolute payouts.
Sequence playthrough — the connoisseur's path
If you want to experience the franchise's evolution:
- Start with the original Money Train (2019). Quick rounds, lean modifier set. ~20 minutes to grasp the core idea.
- Move to MT2 (2020). Notice the modifier additions and the cleaner bonus math.
- Try MT3 (2022). Engage with the persistent-row mechanic.
- Finish with MT4 (2023). See how every prior mechanic was distilled into the finale.
This is the "completionist" route. You'll understand the series the way Relax Gaming designed it.
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Quick FAQ
Is MT4 really the last Money Train? Yes — Relax Gaming announced it as the final numbered entry. Future spin-offs are possible but the numbered series ends here.
Which has the highest RTP? MT2 at 96.40% standard / 98.05% Bonus Buy. For the MT4 variants specifically, see our RTP and volatility article.
Which has the highest max win? MT4 at 150,000×.
Which has the most modifiers? MT4 with 21 types.
Are MT2 and MT4 connected story-wise? Loose theme connection (cyberpunk-western world, same outlaw aesthetic). No deep canonical narrative.
Can I play all three at the same casino? Yes — all four of our featured casinos stock the full series.
Which has the lowest minimum bet? All three offer A$0.10 minimums.
Is MT4 harder to play than MT2? Same fundamental mechanic (scatter-pays + Money Cart). More modifier variety in MT4 but base gameplay is identical.
About this comparison
All three games played across all four featured casinos in April-May 2026. RTP variants verified per casino. Modifier mechanics confirmed by direct play and comparison to Relax Gaming's published documentation.
Gambling responsibly. Loving the franchise is great. Spending more because you love it is not great. Set deposit limits regardless of game. AU support: gamblinghelponline.org.au · BetStop · 18+ only.
Further Reading
Related reading in this guide:
- Money Train 4 Australia: The Full Pokie Review
- Best Australia Casinos to Play Money Train 4 (Vetted 2026)
- Money Train 4 Bonus Buy: Cost, EV, AU Availability
- Money Train 4 Bankroll Strategy for Very-High Variance
- Money Train 4 Australia Banking: PayID, POLi, Crypto Guide
- Money Train 4 Mobile in Australia: iOS, Android, Browser