Bullion Xpress

Bullion Xpress Slot Review

A steam locomotive hauls a line of mine carts across a trestle above the reels, one heaped with gold, another with gift-wrapped parcels, while a portly tycoon in a top hat and purple waistcoat leans out of a gilt frame dangling his pocket watch. Behind the grid, red-brown mesas and saguaro cacti sit in golden-hour light. Bullion Xpress is a Wild West gold-run from Play’n GO, and its best trick is that a spin paying nothing can still be the one the train stops for.

It’s a 6×3 grid with 10 paylines, an RTP of 96.29%, and mid-to-high volatility. Train-themed territory is familiar ground for this studio, with Wild Rails and Track N’ Gold having run the route before, but this one switches the points and does something stranger with the track.

How Bullion Xpress Pays

Wins pay left to right on adjacent reels, starting from the left-most reel, and only the highest combination counts on each payline. Symbol wins pay for any winning combination without gaps. When multiple paylines win in a single round, everything is added together.

All feature and scatter wins are added on top of payline wins, with everything paid out at the end of the round. The bet can’t be changed during a running round, and free-spin-type features play out at the same bet and the same number of selected lines as the round that triggered them.

The wild is a safe strongbox that appears on all six reels and substitutes for every symbol except the bonus symbol. The interesting part is what’s attached to the other symbols. Almost anything that lands can arrive carrying a multiplier, and those multipliers don’t sit on the winning line. They get pooled.

The M-Counter

Any symbol apart from the bonus symbol can turn up with a multiplier attached. Before the round is evaluated, all of those multipliers are collected by the M-Counter, and the sum of everything collected becomes the multiplier for all wins in that round.

The counter then resets, so nothing carries over into the next spin. It’s a round-by-round system, and it applies everywhere except the additional rounds inside Bonus Blitz. The possible values are:

• X2
• X4
• X6
• X15
• X25

Those five values are the full range that can attach to a symbol in the base game. A single X25 attached to a losing spin still gets collected, which matters more than it sounds, because of what happens when a round pays nothing.

Two speed options round out the basics. Fast Play toggles significantly faster spins, and holding the spacebar for a second and a half kicks in Hyper Spin, which speeds the reels up immensely and only slows down again when a feature activates.

Auto Play runs consecutive rounds at your current settings and disables itself if the balance drops too low. An auto-adjust option steps the total bet down to the highest affordable level rather than stalling the session, and the original bet size resumes once it can.

Fortune Frenzy

Every round with no win carries a chance of triggering Fortune Frenzy. The train stops, the conductor steps out, and you’re handed the sum of the four railcar values currently riding above the reels. If the M-Counter collected any multipliers that round, the payout is multiplied by the counter’s value.

So a spin that pays nothing on the reels isn’t necessarily a dead one, because any multipliers it collected still apply to the stop. The railcars are where the money lives. There are four types in the base game, and each carries a value expressed as a multiple of the total bet:

• Bronze railcar: X1, X2, X3 or X4 of the total bet
• Silver railcar: X5, X6, X7 or X8 of the total bet
• Gold railcar: X9, X10, X11 or X12 of the total bet
• Mystery railcar: X4, X6, X8 or X10 of the total bet, revealed only when the train stops

The railcar values sit visibly above the reels and change from spin to spin, so you can see exactly what a Fortune Frenzy stop would pay before it happens. The mystery car shows question marks until the train halts, and its ceiling sits between silver and gold.

Four gold cars is the best the base-game train can offer, and a healthy counter pooled on a winless round can multiply all of it. That’s the arithmetic that makes a spin with no winning line worth watching anyway.

Bonus Blitz

Land three or more bonus symbols and the game triggers Bonus Blitz. Bonus symbols can only land on reels 2, 3, 4 and 5, and the number you catch decides your starting stock: three symbols starts the round with three re-spins, four symbols starts it with four.

The grid transforms into eight columns and two rows. Each round the train moves left to right while the row beneath it moves right to left, and both stop together. The goal is to land multipliers in the row directly below the train’s railcars, because only railcars with a multiplier beneath them pay out.

The multiplier beneath a bronze, silver or gold car multiplies that car’s value, creating a bullion that’s collected each round. Five railcar types ride the track in Bonus Blitz, and the gold tier pays noticeably more than it does above the base reels:

• Bronze railcar: X1, X2, X3 or X4 of the total bet
• Silver railcar: X5, X6, X7 or X8 of the total bet
• Gold railcar: X12, X14, X16 or X18 of the total bet
• Mystery railcar: X4, X6, X12 or X16 of the total bet, revealed when the train stops, then multiplied like any other car
• Re-Spin railcar: awards extra re-spins equal to the multiplier value landed beneath it

Multipliers inside Bonus Blitz are X1, X2, X3 and X5. Because each round is a fresh stop with a fresh alignment of cars and multipliers, a single railcar can pay out again and again across a long run, every collection standing on its own.

Re-spins are capped at 20, which keeps a streak of re-spin cars from running away with the round entirely. A mystery car beneath a X5 multiplier can land as a X16 reveal, so the surprise cars are worth chasing as much as the gold ones.

Our Honest Verdict

Overall Rating: 7.8/10

You spend most of your time watching the top of the screen rather than the reels, and that’s exactly why you’d pick this over the studio’s earlier trains: no spin is ever fully wasted, because the multipliers pool even when nothing lines up, and a dead round can turn into the best one of the session.

The strongest thing here is that interlock between the counter and the two bonus events, with Bonus Blitz the better of them because a single gold car can pay out repeatedly across its twenty-stop ceiling. The weakness is the ceiling itself: every prize on the train is a modest multiple of the bet, so the money arrives in small wagons and never one big delivery.

It’s for players who’d rather see the counter climb a little every spin than wait on one distant jackpot. If that waiting is the part you enjoy, the gold rush out here is a steady one, not a mother lode.

Bullion Xpress FAQs

• What is the RTP of Bullion Xpress?

  Bullion Xpress runs at an RTP of 96.29%.
• Is Bullion Xpress high volatility?

  It sits at mid-to-high volatility, so wins come at a moderate pace with a fair spread in size.
• How many paylines does Bullion Xpress have?

  Bullion Xpress is a 6-reel, 3-row game with 10 paylines. Wins pay left to right on adjacent reels, and only the highest win per payline counts.
• How do you trigger Bonus Blitz?

  Land three or more bonus symbols on reels 2, 3, 4 and 5. Three bonus symbols starts the round with three re-spins, and four symbols starts it with four.
• What does the M-Counter do?

  Multipliers can arrive attached to any symbol apart from the bonus symbol. The M-Counter collects all of them before the round is evaluated, and the total multiplies all wins in that round. It resets after every round.
• What is Fortune Frenzy?

  Any round that pays nothing has a chance to trigger Fortune Frenzy. The train stops and the conductor pays the sum of the four railcar values riding above the reels, multiplied by the M-Counter’s value if any multipliers were collected that round.
• Can Bonus Blitz be retriggered?

  Yes, in effect. Landing a multiplier beneath a re-spin railcar awards extra re-spins equal to that multiplier’s value, and re-spins are capped at 20 for the round.
• When is Bullion Xpress released?

  Bullion Xpress’s release date is 25 September 2025.