Super Fire Rail Express FAQ: the complete guide

Octoplay develops the game. Its official page documents the layout, collection features, Diamond Booster and 4,300× maximum.

Grosvenor lists five. Octoplay states that symbols pay from left to right on the defined lines.

Collection requires the matching locomotive: Cash Train for Golden Coins, or Jackpot Train for Jackpot Coins.

No. Golden Coin and Cash Train symbols cannot land together with Jackpot Coin and Jackpot Train symbols.

Octoplay specifies a three-by-three field, and Grosvenor's game information confirms five paylines. Line wins run from left to right. This small layout leaves a clear distinction between ordinary line results and the collection features, which depend on the relationship between outer-reel coins and a middle-reel locomotive.

Up to six Golden Coins can appear in a spin. Their published values are 1×, 2×, 3×, 4×, 5×, 7×, 8× and 10× the stake. They do not land on the middle reel. A Cash Train on that reel collects the cash values of Golden Coins present in the same spin.

Jackpot Coins can carry Mini at 15×, Minor at 25×, Major at 100× or Grand at 500× the stake. Up to six can appear, excluding the middle reel. A Jackpot Train collects their prizes. These named coin amounts are distinct from the game's overall maximum of 4,300×.

A matching coin or train on every reel in the same spin activates its bonus. A coin can also trigger the corresponding feature through its own chance event. In that case, symbols are added until both outer reels have the matching coin and the middle reel has its train. The coin-pile and jackpot-display animations do not change trigger chances.

Each Wild adds one to the Diamond Counter, up to 25. At 25, Wilds cannot land. During either bonus, the Booster can apply 2×, 3×, 4× or 5× to a coin prize. That multiplier value is deducted from the counter and cannot exceed the available counter value. For example, applying 4× uses four counter units.

The Diamond Counter begins at five on first launch. If a bonus ends with zero or one remaining, five is added; the rule is an addition, not a reset to five. Octoplay states that the counter persists between sessions for the game's bet settings. This retained number has a mechanical role, separate from decorative accumulations elsewhere on screen.

At least one Golden Coin or Cash Train on every reel in the same spin; a Golden Coin can also trigger it. Only Golden Coins, Cash Trains, Wilds and empty positions appear in this feature. Cash Trains lock when they land and remain through the bonus. Golden Coin values are collected by each locked Cash Train. The Diamond Booster can multiply those coin prizes while the respin sequence continues.

At least one Jackpot Coin or Jackpot Train on every reel in the same spin; a Jackpot Coin can also trigger it. This version uses Jackpot Coins, Jackpot Trains, Wilds and empty positions. Jackpot Trains remain locked and collect the named jackpot prizes once each. Qualifying symbols reset the three-respin counter, and the same Diamond Booster can affect these coin prizes. The accumulated awards are paid when the feature finishes.

Published RTP figures differ by listing. Grosvenor currently states 92.83% for its game, while SiGMA's review lists 95.80%. Octoplay's public page used here does not declare a universal RTP. These values should be read with their source and configuration context, rather than assigned to every installation.

RTP is a theoretical long-run return, not a session result or a prediction of the next spin. Likewise, a respin counter reset does not specify the amount collected. Trigger probabilities and hit frequency cannot be calculated from the number of symbols, the displayed coin pile or a remaining counter value.

Octoplay publishes a maximum win of 4,300 times the stake. The Grand coin's stated 500× value and the Booster's maximum 5× multiplier describe individual parts of the rules, not alternative names for that overall ceiling. No numerical volatility or hit-rate value is established by the primary sources used here.

Each of the two bonus formats starts with three. Matching coins, trains or Wilds reset that counter to three.

It reaches its maximum, and Wilds cannot land. Bonus multipliers can reduce the counter by their applied value.

No. Octoplay describes the coin accumulation and jackpot-display changes as cosmetic, without an effect on trigger probability.

No universal figure is established. SiGMA lists 95.80%, while Grosvenor publishes 92.83%. The specific game's information identifies its setting.

An outer-reel symbol with a cash value, collected by a Cash Train.

The middle-reel locomotive that collects Golden Coin values and locks during Hold & Win.

A coin carrying Mini, Minor, Major or Grand, collected by the Jackpot Train.

A respin format in which collecting trains remain locked while qualifying symbols reset the counter.

The feature that uses a retained counter to apply 2× to 5× multipliers to bonus coin prizes.