Money Train 4” is a thrilling slot game that pushes the limits of online gaming to its maximum. As the final installment in the popular Money Train series, it has managed to surpass the success of its predecessors with a plethora of engaging features and a remarkably high maximum win potential.

Major Features and Mechanics:

- Stunning cinematography and breathtaking pace for an immersive gaming experience.

- Money Cart Round accompanied with 20 special symbols for an interactive gameplay.

- The addition of a new symbol, the Upgrader, transforms regular special symbols into persistent ones, adding to the excitement.

- The maximum potential win stands at 150,000x the stake, the highest across the series, promising a massive potential compared to most slots and games out there.

- The Money Train 4 RTP stands at 96.1 %, slightly above the average. However, the RTP can be adjusted downwards by operators according to their preferences.

- Offering high volatility just like other installments in the series, scoring 5 out of 5 on Relax Gaming's scale, making it a challenging and thrilling game for experienced players.

Gameplay Mechanism:

- The game offers a pay anywhere (Scatter Pay) system, where wins are achieved by landing 8 to 36 matching symbols anywhere in view on the 6x6 grid.

- Maintains a frequent win rate with a hit rate of 20.14%, yielding a win every 5th spin on average.

Symbols and Paytable Mechanism:

- The Necromancer with 8 to 36 appearances offers a Bet Multiplier of 1.2x to 1,000x.

- The Native American Bandit has a multiplier of 1x to 500x

- The Bearded Bandit results in a multiplier of 1.2x to 400x.

- The Heart and Spade symbols each offer a multiplier of 0.5x to 125x.

- The Club and Diamond symbols both result in a multiplier of 0.4x to 100x.

Bonus and Special Feature Mechanics:

- Streak Respins Feature activating at the end of any given spin, with the symbols having most instances in view becoming frozen in place, resulting in respins streaks that continue so long as new wins or multipliers are added.

- Money Cart Bonus Round is triggered when at least 3 bonus scatters are in view, starting with a 6x4-sized grid. The round comes with 3 respins and a host of special symbols each having unique features and modifiers.

- A bonus buy option is also available for eligible players, allowing them to purchase the regular money cart bonus round for 100x the stake or trigger the money cart bonus round with 1 persistent symbol from the start for 500x the stake.

Overall, Money Train 4 takes you for an adventurous ride in an advanced railroad fortress across a desert planet, making it a potentially rewarding and visually gripping game for both serious gamblers and casual slot lovers alike.