Bigger Bonanza Rush Express Slot Review
A steam locomotive sits at the top right of a canyon built from faceted crimson crystal, hauling ore wagons heaped with green, purple, pink and red gems across the top of the machine while a golden sky burns behind the tunnel mouths. In Bigger Bonanza Rush Express, that train isn’t decoration – it’s the game. Almost nothing this slot pays rides on the paylines, and the reels beneath are mostly a waiting room for the collection above them.
It’s a 5×4 grid with 20 fixed paylines, high volatility and a 96.51% RTP, with stakes from 0.10 to 50.00. AreaVegas Games built it, and Bigger Bonanza Platinum Rush Express and Diamond Rush Express run on the same rails. No maximum win figure is published for this one. What you chase instead is a train.
Base Game & Features
This is a 5 reel, 4 row slot with 20 fixed paylines. Wins pay left to right from the first reel, and only the highest combination counts per line. It’s standard line-win construction; the interesting machinery lives somewhere else entirely, on reel five and on the four reels to its left.
Wild symbols carry the game’s own logo and substitute for everything except the Gem, Rush Express, Diamond Multiplier, Bell and Gold Train symbols. They also form their own winning combinations on a payline. That’s their whole job, and it’s a modest one, because this paytable is not where the money is.
Symbol values are thin by design. Here’s the full ladder:
- Gold Bars: 5x for five, 1x for four, 0.5x for three
- Gem Bag / Gem Bucket: 2.5x / 0.5x / 0.25x
- Pickaxe Bucket / Lantern: 2x / 0.5x / 0.25x
- Royals (A, K, Q, J, 10): 1x / 0.25x / 0.1x
Even the top symbol, five Gold Bars, returns five times your line bet. The royals at the bottom pay a tenth of that for three. Nothing here is going to carry a session on its own, and the game doesn’t price its symbols as though it should.
Rush Express Feature
Bell and Gold Train symbols land on reel five only. Rush Express symbols land on reels one to four. When a Bell or Gold Train arrives on reel five on the same spin as at least one Rush Express symbol, the feature fires. Nothing about the paylines matters in that moment.
A Bell landing awards every Rush Express symbol prize on screen. A Gold Train landing collects every prize to the train above the reels and pays the total up to 10 times over. That repeat, the same board paying as many as 10 times, is the biggest number in the game.
Each Rush Express symbol then resolves through a Train mini feature, matching the colour of the triggering symbol. The train rolls out car by car, and each car collects a cash prize for the triggering symbol.
The final car is the one that matters. It can award a multiplier, or it can pay the corresponding coloured jackpot. So one trigger can end as pocket change or as a jackpot, decided in the last carriage.
Pick Feature
At the end of any base game spin that doesn’t trigger the Rush Express feature, Nugget symbols can randomly set off a Pick Feature. Match three icons to win the matching prize.
It can’t trigger inside Free Spins, and it can’t follow a Rush Express trigger either, so it’s strictly a base-game consolation. One that occasionally isn’t one, if the icons fall kindly.
Bigger Bonanza Rush Express Free Spins & Gem Upgrades
One or more Gem symbols landing can trigger 10 Free Spins. Bets and lines stay as they were on the triggering spin, and the Rush Express feature occurs more frequently during the round. Retriggers aren’t possible, so 10 is what you get.
What changes the round is which Gems you collect on the trigger. The combination of Gem symbols determines the upgrades awarded, and each colour does something different:
- Green Gem: a Bell or Gold Train symbol is guaranteed on every free spin
- Purple Gem: every Bell symbol upgrades to a Gold Train
- Pink Gem: Diamond Multiplier symbols (2x, 3x, 5x) are added to reels one to four, multiplying the total of all on-screen prizes whenever Rush Express triggers
- Red Gem: a second free spins array is awarded, each playing out independently
The Green and Purple Gems together are the dream ticket: a Gold Train on every spin, each one collecting and repeating the board. The Pink Gem stacks multipliers on top, and the Red Gem gives you the round twice.
Four colours that bend the round in four different directions is rarer than it sounds. Most bonus rounds are fixed, with the trigger deciding only whether you’re playing; here the trigger decides what kind of game you’re playing, and the Red Gem’s twin arrays mean one lucky spin can run two of them at once.
Our Honest Verdict
Overall Rating: 7.7/10
Most spins here are spent watching a canyon that hasn’t paid you yet. The reels turn, a line win of half your stake arrives and goes, and what you’re actually waiting for is the train. Anyone choosing this game is choosing that: a board that fills with prizes and one symbol on reel five that decides what they’re worth.
The Gem system is the best thing in it, because the trigger genuinely changes the round rather than just starting it – a Green-plus-Purple spin plays like a different game to a bare one, and the Red Gem hands you the whole thing twice. The hard stop is the honest weakness: 10 spins, no retrigger, and nothing published to aim at beyond the coloured jackpots, so a great round can end while it’s still warming up.
It’s a good home for players who like collection mechanics and a bonus that never arrives the same way twice. If you size a slot by its paytable, the royals here will read as thin. For everyone else, there’s a train full of gems at the top of the canyon, and it’s worth waiting for.
Bigger Bonanza Rush Express FAQs
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How does the Rush Express feature trigger in Bigger Bonanza Rush Express?
A Bell or Gold Train symbol must land on reel five on the same spin as at least one Rush Express symbol on reels one to four. The Bell awards all on-screen Rush Express prizes, while the Gold Train collects them and pays the total up to 10 times. -
What do the different Gem colours do in the Free Spins round?
The Gems collected at the trigger determine your upgrades. Green guarantees a Bell or Gold Train on every free spin, Purple upgrades all Bells to Gold Trains, Pink adds 2x, 3x and 5x Diamond Multipliers to reels one to four, and Red awards a second free spins array that plays out independently. -
Can you retrigger the Free Spins in Bigger Bonanza Rush Express?
No. Retriggering isn’t possible, so the round runs for 10 spins only. The combination of Gems collected at the trigger, not retriggers, is what shapes how strong those 10 spins become. -
Can the Pick Feature trigger during Free Spins?
No. The Pick Feature only fires at the end of a base game spin that doesn’t result in a Rush Express feature, so it never appears inside the Free Spins round. It’s a base-game mechanic only. -
What is the RTP of Bigger Bonanza Rush Express?
The RTP is 96.51%. That’s the total expected return, and it sits comfortably above the 96% you’d call the rough industry benchmark. -
Is Bigger Bonanza Rush Express high volatility?
Yes, it’s a high volatility game. Wins on the paylines are modest, and the bigger money comes through the Rush Express collections and the coloured jackpots. -
What is the hit frequency of Bigger Bonanza Rush Express?
The hit frequency is 30.01%, so roughly three spins in every 10 produce some kind of win. That doesn’t say how large those wins are, only how often something lands. -
What are the minimum and maximum bets on Bigger Bonanza Rush Express?
Stakes run from 0.10 to 50.00 per spin. The same bet and line configuration carries over into the Free Spins round as the spin that triggered it.
