1st Class Express Big Train Bonus Slot Review
First class on a Victorian railway bought you a locked compartment and the right to ignore everybody else on the train.
1st Class Express Big Train Bonus parks that carriage on a gaslit platform, brick arches overhead and the track running off into the dark behind the reels.
It’s the work of Posh Monkey Studios, who also have Mythology of Zeus QUADCHARGE and 3 Pots of Horus to their name.
The maths underneath is unfussy: a 96.01% RTP, very high volatility, and wins landing on 26.52% of spins. Stakes run from 0.20 to 10.00 per spin.
What’s bolted on top is a good deal louder. Four pots sit above the reels, each fed by its own colour of gem, and a four-tier jackpot ladder runs down the left-hand side from the first spin onwards.
Base Game & Features
The reels form a 5×4 grid playing 40 paylines, framed in gold against the brickwork of a station arch. Gas lamps stand either side of the frame, and the sleepers of the track run away into the night underneath the whole thing.
Card ranks 10, J, Q, K and A do the low-paying work. Above them sit a potion bottle, a pocket watch, a blue gemstone, a suitcase and a gold 1st Class ticket, with a W wild in a gilt frame.
The Jackpot Ladder
Four fixed tiers sit down the left of the screen and stay there whether or not you’re anywhere near them: GRAND at the top, then MAJOR, MINOR and MINI beneath it.
The ladder is heavily top-loaded. GRAND is worth fifty times MAJOR and five hundred times MINI, so the three lower rungs are pocket change beside the one at the top.
Coins on the Reels
Coins land carrying their own values, printed straight onto the face of the symbol, and they can fill most of a reel at a time.
A COLLECT marker turns up alongside the bonus meters while one of the pots is running.
1st Class Express Bonus Features
Everything this game does with a bonus runs through its Scatters, and there are four colours of them.
Each colour collects into its own Pot above the reels, and each Pot is labelled with the bonus it hands out.
- Blue Scatters collect into the ADDER pot and can award the ADDER BONUS.
- Purple Scatters collect into the MYSTERY pot and can award the MYSTERY BONUS.
- Pink Scatters collect into the 3×3 pot and can award the 3×3 BONUS.
- Yellow Scatters collect into the MULTI pot and can award the MULTI BONUS.
A single spin can hand over 1, 2, 3 or 4 of those bonuses at once, and that’s the ceiling the whole design builds towards.
Special Scatters
A separate class of Scatter upgrades the pots rather than simply filling them. Every 3rd Special Scatter increases the value of either the ADDER BONUS or the MULTI BONUS.
Three Blue Special Scatters push the ADDER BONUS up by 0.5x total bet, climbing from +1 as far as +5. It’s a slow build rather than a jump, and it’s the one part of the game where a dry spell still leaves something behind.
The Pots in Play
The pots carry live values on screee. The MULTI pot shows a multiplier, the ADDER pot shows an amount to be added, and both climb as the Special Scatters arrive.
When the MULTI BONUS runs, its meter appears with a collect icon and the jackpot ladder sitting alongside it. The 3×3 BONUS and the MYSTERY BONUS each get a meter of their own.
1st Class Express Big Train Bonus carries no bonus buy and no feature purchase of any kind.
Our Honest Verdict
Overall Rating: 7.4/10
Four pots, four gem colours, one route in. It’s a layout you can read at a glance, and the pots advertise their own worth in real time instead of making you go looking for it.
That legibility is also the limit. Nothing at all happens without Scatters, so a barren stretch leaves you watching a beautifully drawn station and very little else.
The jackpot ladder is the other question. GRAND towers over the rest by such a distance that MAJOR, MINOR and MINI read as consolation rather than reward, and all four are in your eyeline on every spin regardless.
It’ll suit anyone who likes a collection meter they can watch fill, and who’d rather have a jackpot in plain sight than a big multiplier ceiling to aim at.
Posh Monkey have dressed the platform beautifully. Whether the train ever leaves is down to which gems turn up.
1st Class Express Big Train Bonus FAQs
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What is the RTP of 1st Class Express Big Train Bonus?
The RTP is 96.01%. Volatility is rated very high and the hit rate is 26.52%, so a win lands on a little over a quarter of spins. Stakes run from 0.20 to 10.00 per spin. -
What are the bonus features in 1st Class Express Big Train Bonus?
There are four: the ADDER BONUS, the MYSTERY BONUS, the 3×3 BONUS and the MULTI BONUS. Each one has its own Pot above the reels and its own colour of Scatter feeding it, and a single spin can award one, two, three or all four of them at once. -
How do the Scatters work in 1st Class Express Big Train Bonus?
Scatters collect into their associated Pot above the reels. Blue Scatters can award the ADDER BONUS, Purple Scatters the MYSTERY BONUS, Pink Scatters the 3×3 BONUS and Yellow Scatters the MULTI BONUS. They’re the only route into a bonus, since there’s no purchase option. -
What do the Special Scatters do in 1st Class Express Big Train Bonus?
Every 3rd Special Scatter increases the value of either the ADDER BONUS or the MULTI BONUS. Three Blue Special Scatters raise the ADDER BONUS by 0.5x total bet, building from +1 up to a maximum of +5. -
What jackpots does 1st Class Express Big Train Bonus have?
Four fixed tiers sit down the left of the screen from the first spin onwards: GRAND at the top, then MAJOR, MINOR and MINI. The ladder is steeply weighted towards the top, with GRAND worth fifty times MAJOR and five hundred times MINI. -
What is the grid layout of 1st Class Express Big Train Bonus?
It’s a 5×4 grid, so five reels of four symbols each, playing 40 paylines. The four bonus Pots sit in a row above the reels and the jackpot ladder runs down the left-hand side of the screen. -
Does 1st Class Express Big Train Bonus have a bonus buy?
No. There’s no bonus buy or feature purchase of any kind in 1st Class Express Big Train Bonus. The controls run to spin, autoplay, turbo and settings, so every bonus has to be collected through the Scatters. -
When was 1st Class Express Big Train Bonus released?
1st Class Express Big Train Bonus’s release date is 3 September 2026. It comes from Posh Monkey Studios, the studio behind Mythology of Zeus QUADCHARGE and 3 Pots of Horus, and reaches casinos through Games Global as distributor.
