Bison Bonus Slot Review
by GeniiReleased Nov 7, 2024
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Cartoon prairie slot where a Bison Stampede randomly drops Wilds in the base game and a Pick round leads into Free Spins with Roaming Wilds.

Specifications
| Game Type | Slots |
|---|---|
| RTP | 96% |
| Volatility | Low |
| Max Win | 46x |
| Grid | 5x3 |
| Paylines | 30 fixed paylines |
Bison Bonus Slot Overview
Bison Bonus puts a cartoon prairie on five reels and lets you build your own free spins round before it starts. Three Feature symbols anywhere on the grid stop play, and you pick those symbols where they landed. Each one hands over a piece of the setup you are about to take into the bonus: how many free spins you get, and how many Roaming Wilds travel with them.
That is the good idea, and it is a better one than the game around it deserves. The rest is a plain 30-line, 5x3 build with a random Wild event called the Bison Stampede, a scatter that pays a token amount, and a ceiling of 4,150 coins. Spread across the 30 lines, that ceiling is roughly 138x the total stake. Low, by any measure. Some listings turn the same 4,150 into a 4,150x max win, which it never was: Genii states its ceilings in coins across the whole catalogue, and a coin total is not a multiplier.
Nothing here is trying to be a big game. It plays cheap, from a cent a spin, and it pays in the same register.
Theme & Design
The reels hang inside a wooden post frame wrapped in green vines, set against bright blue sky with a spiky cartoon sun in one corner and a dark pine treeline behind. J, Q, K and A are carved from coloured wood, lime green through pale blue, mauve and red, each sitting on its own little tile of clouds. The animals are all drawn with a grin: a buck-toothed prairie dog up on its haunches, a smug tan fox, a pronghorn chewing grass on a dusty trail. The Scatter is a scruffy grey bird that looks permanently put out about something.
The odd note is the bison itself. The key art has it charging out of a dust cloud with its eyes wide, and the name promises a stampede across the plains. What you get is a sunny meadow with woodland edges, closer to a children's picture book than the Wild West. The Wild keeps the angry bison head, framed like a portrait hung on a wall, and it is the only thing on the board with any menace in it. Good art, wrong advert.
Symbols & Paytable
| Symbol | Payout |
|---|---|
| Bison Wild | substitutes every symbol except the Scattersframed bison head; becomes a Roaming Wild during free spins, and drops as a Random Wild after a Bison Stampede |
| Feature (sunset plaque) | 3 or more anywhere starts the pick round and free spinsdoes not appear during free spins, so no retrigger |
| Scatter (grey bird) | 2 / 3 / 4 / 5 coins for 2/3/4/5, multiplied by the total betpays anywhere and adds to line wins; base game only |
| Top animal premium | 50 / 70 / 120 coins for 3/4/5the prairie dog, fox and pronghorn hold the top three tiers |
| Second animal premium | 40 / 50 / 60 coins for 3/4/5 |
| Third animal premium | 30 / 40 / 50 coins for 3/4/5 |
| A | 10 / 20 / 30 coins for 3/4/5 |
| K | 9 / 15 / 25 coins for 3/4/5 |
| Q | 8 / 12 / 20 coins for 3/4/5 |
| J | 5 / 10 / 15 coins for 3/4/5 |
Features & How They Work
The Feature pick
Three or more Feature symbols anywhere on the reels stop the game and open the pick. You choose the Feature symbols themselves, in the positions they landed, and each pick reveals part of the round you are about to play: extra free spins, or Roaming Wilds to carry into them. Four or five Feature symbols means more of them sitting on the grid to pick from, which is the only lever you have over how big the round gets.
The ranges behind those picks are never shown. The game does not publish how many spins or how many Wilds sit under each one, and the awards shift from trigger to trigger. So the pick presents as a choice and plays as a reveal.
Roaming Wilds
Every Wild that comes into the bonus turns into a Roaming Wild, and each Roaming Wild moves to a fresh random position at the start of every free spin. They stay for the entire round. That is what makes the bonus worth reaching: on a 30-line grid, a Wild that relocates each spin is touching different lines every time, and two or three of them roaming at once is where the round actually pays.
The Feature symbol sits out the bonus completely, so there is no retrigger. Whatever the picks gave you is what you play to the end.
Bison Stampede
The base game's only interruption. A stampede fires at random, with no symbol combination or trigger behind it, and drops Random Wilds onto the grid. The game never commits to a count, and it varies from one stampede to the next. It exists to stop a quiet 30-line base from going completely flat between Feature triggers, and it has to, because there is nothing else happening down there.
Scatter pays
The grumpy grey bird pays from anywhere on the reels, on top of whatever the paylines deliver. Two, three, four and five of them award 2, 3, 4 and 5 coins, multiplied by your total bet. Five Scatters is 5x your stake and no more, which is about as close to decorative as a scatter pay gets. It is switched off during free spins.
Gamble, and the missing buy button
Genii's card gamble is in here, the usual double-or-nothing draw on a win. There is no bonus buy anywhere in the game. With a ceiling this low a buy would have been awkward to price, so its absence costs nothing.
Stakes run from a cent to $37.50, built the old way: pick a chip size, pick one to five coins per line, pick anywhere from 1 to 30 lines. The default sits at 30 lines, three coins, five-cent chips, which is $4.50 a spin.
Screenshots

How Bison Bonus Plays
Sessions run flat and cheap. The best animal pays 120 coins for five across, which on a full 30-line bet does not move a balance much, so the base is a long run of small returns that keep the number ticking without building toward anything. Long stretches pass where nothing lands at all (30 lines, cheap symbols, that is the trade). Then a stampede goes off, four Wilds appear at once, and for a single spin the grid looks like a different game.
The pick is the only moment with any weight to it, and it goes by fast. You tap, numbers come up, and half a minute later you are in free spins watching Wilds shuffle around the grid. How good the round is was decided before you tapped anything, and that is probably the honest flaw in the design: it dresses a random award up as a decision.
What it does well is stay pleasant. Bright board, frequent little hits, low stakes, no dread between spins. It is a wind-down game and it knows it.
Pros & Cons
Pros
- The Feature pick lets you set up the shape of your own free spins round, which almost nothing at this price does
- Roaming Wilds reposition every free spin and stay for the whole round, so they never sit idle
- Bison Stampede fires with no warning and breaks up an otherwise quiet base game
- Cheap and flexible staking, from a cent to $37.50, with the line count adjustable down to one
Cons
- A 4,150 coin ceiling works out around 138x the stake, small for a five-reel slot
- Scatter pays cap at 5x the total bet, which barely registers on a win
- No retrigger and no buy, so the bonus is one shot at whatever the picks handed you
- The game displays no RTP figure at all, and Genii leaves the setting to the operator
Is Bison Bonus Worth Playing?
A small game built around one idea worth the trip. The pick that configures the free spins is smarter than most of what turns up on a 30-line grid at this level, and Roaming Wilds are the right partner for it, moving each spin so they stay useful all the way through the round. The trouble is everything the idea is bolted to. The base game is thin, the scatter pay is close to ornamental, and the pick turns out to be less of a decision than it first looks.
Genii has bigger wildlife slots than this one. Bear Spirit Bounty reaches considerably further on a similar animal theme. Bison Bonus works as low-stakes filler with a clever twenty seconds in the middle of it, and it does not pretend to be anything past that.
Frequently Asked Questions
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Reviewed by Arina, PR & Content Manager
PR & Content Manager at SlotsReach
Published 6 Aug 2026 · Updated 6 Aug 2026