How it plays
Money Train 4 moves the series to a 6x6 grid with scatter pays: at least 8 matching high-pay symbols (or 10 low-pay) anywhere in view award a win. The base game keeps the randomly triggered respin feature with sticky symbols and accumulating multipliers.
Bets run €0.10 to €6 per spin on the official configuration.
Bonus features
The Money Cart bonus starts on a 6x4 grid and now packs 20+ feature symbols, adding the Upgrader (persistent benefits), Unlocker (reveals extra rows), Reset (refills the spin counter) and the Arms Dealer, which hands features to other bonus symbols, alongside returning Collectors, Payers, Snipers and Persisters.
Two bonus buys are offered: a standard bonus at 100x or a 500x Persistent Bonus with one guaranteed persistent symbol.
RTP versions
The standard configuration returns 96.10%, with the bonus buys rated around 96.50%. As with the rest of the series, Relax Gaming supplies reduced-RTP builds to some markets, so verify the figure in the live game panel.
Volatility is high (5/5) with a hit frequency of about 20.14%, and the max win rises to 150,000x — the largest in the franchise.
Verdict
Released on 20 September 2023 as the series finale, Money Train 4 stacks the biggest feature set and the biggest ceiling (150,000x) of the franchise onto a scatter-pays grid — a fittingly extreme send-off for slots' best-known bonus round.
