Money Train 4 bonus buy gives you instant access to one of the most volatile bonus rounds in modern slots — and while UK-licensed casinos have had this feature blocked since 2019, the best non-GamStop casinos still offer every buy tier from 20x to 500x your stake.
What Is Money Train 4?
Money Train 4 is the fourth instalment in the Money Train series by Relax Gaming, released in 2024. It is a 5-reel, 40-payline slot with a base RTP of 96.10% and a max win of 150,000x stake — one of the highest theoretical maximums in any widely available slot. It features the iconic Bonus Buy mechanic with multiple buy tiers.
Unlike UKGC-licensed casinos where the buy feature is prohibited, non-GamStop casinos offer the full version of Money Train 4 with all bonus buy options enabled. The casinos below are Curacao-licensed and accessible to UK players outside the GamStop network.
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Money Train 4 Bonus Buy Options
Money Train 4 offers tiered bonus buy options ranging from 20x to 500x stake, each providing a different level of entry into the Money Cart Bonus feature:
Buy Tiers Explained
| Buy Tier | Cost | What You Get |
|---|---|---|
| Base Buy | 20x stake | Standard Money Cart Bonus entry |
| Enhanced Buy | 100x stake | Higher starting multiplier values |
| Super Buy | 500x stake | Premium entry with boosted modifiers |
The tiered structure makes Money Train 4 accessible at different bankroll levels. A 20x buy at £0.40 stake costs just £8. The 500x buy at £1 stake costs £500 and is for high-variance, high-bankroll play targeting the 150,000x ceiling.
Why UKGC Sites Don’t Offer It
Relax Gaming provides UK-market versions of Money Train 4 to UKGC-licensed operators — those versions have the bonus buy disabled in compliance with the October 2019 UKGC ban under RTS 14a. Non-UK offshore casinos receive the full international version with all buy tiers active.
Best Non-UK Casinos for Money Train 4 Bonus Buy
BassWin — Best Overall
Full Relax Gaming catalogue including Money Train 4 with all three buy tiers active. Curacao licensed, 5,000+ games, crypto and debit card support.
Donbet — Best for Crypto
Donbet offers dedicated Bonus Buy lobby navigation and enhanced crypto welcome deals. Money Train 4 available with full buy options. 90+ software providers.
Velobet — Fastest Withdrawals
Velobet processes verified withdrawals within hours — important when high-variance play like Money Train 4 can generate large wins you want access to quickly.
Quick Stats
| Feature | Details |
|---|---|
| Provider | Relax Gaming |
| RTP | 96.10% – 97.00% |
| Bonus Buy Cost | 20x – 500x stake |
| Max Win | 150,000x |
| Available at | BassWin, MyStake, Rolletto, Donbet, Velobet |
Responsible Gambling
Money Train 4 is an extremely high-volatility slot. Always set a strict session budget before playing. For free support, visit BeGambleAware or call GamCare on 0808 802 0133 (24/7). The casinos on this page are not UKGC-licensed and not covered by GamStop.