Bison Boom Slot Review

⭐ 8.5/10
Create by: Northern Lights
Review by:
Posts by Michael White
Updated: November 29, 2025

Bison Boom is a Average volatile slot from Northern Lights with an RTP 96.15% | 94.08% | 92.12% and up to x11000 maximum win. Play demo for free.

Bison Boom Slot Demo

Release Date
2024-07-10
RTP
96.15% | 94.08% | 92.12%
Max Win
x11000
Volatility
Average
Bet Range ($,€,£)
0.20 - 20
Number of Reels
5
Betways
20 - 45
Features
Animals, Bonus Buy, Buffalos, Dynamite, Hold and Spin, Multiplier, Nature, Split Symbols

The Bison Boom Slot Game

As soon as I loaded up Bison Boom, I knew Northern Lights Gaming were heading back to the American prairie again, this time with a box of dynamite on the side. The slot plays on a standard 5x3 grid with 20 fixed paylines, so the structure feels very familiar. What hooked me was how the studio bolted a Link & Win style hold-and-spin round onto that simple base.

Visually, Bison Boom does a solid job. The reels sit in front of the dry wilderness by day, then switch to a calmer night scene once Bison Spins kick in. The soundtrack is laid-back rather than aggressive, which suits longer sessions. Stakes range from 20p to £20 per spin, and the interface on the right-hand side keeps things tidy on both desktop and mobile.

Symbols and Payouts in Bison Boom

On the paytable, Bison Boom keeps things straightforward with eight regular symbols. The low pays are J, Q, K and A card ranks, paying from 0.1x up to 1x your stake for five of a kind. To get paid, you need at least three matching symbols landing left to right on one of the 20 paylines, which is all very standard video slot stuff.

The high-win symbols in Bison Boom carry the wildlife flavour. Raccoon, Eagle, Wolf and Bear icons pay between 0.5x and 8x your bet for full lines, with the Bear sitting at the top. Payouts on these are still modest compared with what the bonus can throw up, so I mainly see them as a way of keeping the balance ticking over while you wait for features.

The standout symbol is the Bison Wild. It substitutes for everything except the scatter and pays the same as the Bear, with a screen full of wilds paying 8x your total bet. During Bison Spins you mostly stop thinking about line wins anyway, as the Red and Blue Moon symbols show bet multipliers up to 7x, then lock in place while they build a feature win.

Symbols and Paytable

Symbol Quantity Payout
icon 1 5 x16
4 x8
3 x4
icon 2 5 x8
4 x4
3 x2
icon 3 5 x6
4 x3
3 x1.2
icon 4 5 x4
4 x2
3 x1
icon 5 5 x2
4 x1
3 x0.8
icon 6 5 x1.6
4 x0.8
3 x0.6
icon 7 5 x1.2
4 x0.6
3 x0.4
icon 8 5 x1
4 x0.4
3 x0.2
icon 9 Scatter
icon 10 Bonus
icon 11 Wild

Bison Boom Slot Bonus Features

Bison Boom has a neat random feature in the base game called Bison Wild Boom. Mini dynamite tokens can land on any spin and get stored in the wooden crate to the left of the reels. When the crate explodes, up to fifteen Bison Wilds drop into view, replacing regular symbols. When this happens on a decent stake, it usually feels like you have hit a mini bonus.

In Bison Spins, Bison Boom switches to a Link & Win style round. Three scatters trigger it, and you can pay for Upsizer upgrades before it starts. You begin with three respins on a grid packed with Moons, blanks and special modifier symbols. Moons carry sticky bet multipliers, and filling all positions pays 2,000x on top. Modifiers such as Collector, Adder, Splitter, Doubler, Keys and Bombs ramp things up fast.

How to Win at Bison Boom Slot

When I play Bison Boom for real money I usually stick to stakes where the Feature Upgrade meter can tick along without scaring my balance. Two scatters on reels one and three feed that meter, and every ten tokens opens another row for the next Bison Spins round. You can also buy straight into Bison Spins for 71.8x bet, but I treat that as an occasional shot rather than a habit.

Bison Boom Slot RTP & Volatility

Bison Boom runs on selectable RTP settings of 92.12%, 94.08% or 96.15%, so I always check the information screen at my casino first. Volatility sits in the medium bracket with a hit rate of 33.55%, which matches how the slot feels – lots of smaller line wins, fairly frequent feature teases, and then the odd Bison Spins session where the 11,000x maximum exposure suddenly feels in reach.

The Final Thoughts on Bison Boom

For me, Bison Boom sits in that sweet spot between relaxing spins and punchy bonus action. The prairie theme might not feel original any more, yet the dynamite crate and busy Bison Spins modifiers keep it from going stale. I liked how the upgrade meter gives the base game a sense of progress, so even near-miss scatter spins feel as though they are doing some work.

I do have a couple of niggles with Bison Boom. Regular symbol wins are on the low side, so without Bison Wild Boom or Bison Spins the balance can drift. Grinding ten scatter tokens per upgrade step can also feel slow. Despite that, the medium volatility, flexible stake range and 11,000x ceiling make this one I am happy to return to when I fancy a link-style bonus grind.

Bison Boom Final Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.15% | 94.08% | 92.12%)








Max Win (x11000)








Originality








FAQs About Bison Boom

Can I play Bison Boom free slot?

Absolutely! You can enjoy Bison Boom for free on our website without registration. Our partner casinos of Northern Lights also usually offer demo mode access.

Can I win real money on Bison Boom slot?

Yes, to win real money in Bison Boom, you'll need to create an account at a licensed casino site. You can then play for real and win up to x11000.

Can I play Bison Boom slot on mobile phone?

Yes, Bison Boom is fully optimized for mobile devices and runs smoothly on any devices.

Compare Bison Boom With Other Slots

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Bison Boom 8.5 Northern Lights 2024-07-10 Average 96.15% | 94.08% | 92.12% 0.20 - 20 x11000 5 20 - 45
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Wanted Unusual Suspects 6.5 Northern Lights 2024-09-18 Above average 96.05% | 94.03% | 92.01% 0.10 - 20 x10000 5 20
Unusual Suspects Cartel Cash 7 Northern Lights 2024-11-26 Average 96.09% | 94.14% | 92.08% 0.20 - 20 x12000 5 10
Polar Bonanza 6 Northern Lights 2024-12-02 Average 96.01% | 94.03% | 92.03% 0.20 - 40 x5000 5 10
More Unusual Catch Northern Lights 2025-01-22 Average 96.06% | 94.05% | 92.09% 0.10 - 40 x15000 5 20
Unusual Catch 7.5 Northern Lights 2024-05-02 Average 96.04% | 94.07% | 92.12% 0.10 - 20 x8000 5 20 - 45
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Tiki Tiki Boom 7.5 Northern Lights 2023-08-31 Average 96.15% | 94.08% | 92.12% | 86.88% 0.20 - 20 x11000 5 20
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Boom Pirates Microgaming 2019-09-19 High 96.19% 0.20 - 75 x3800 5 - 9 1024 - 10077696
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Boom Time 8 Iron Dog 2022-11-21 High 96% | 94% | 88% 0.10 - 50 x9689 5 1125
Big Boom Riches Just For The Win 2021-09-14 High 96.06% 0.20 - 50 x5000 5 20
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