Red Rake Gaming

Grand Bison

Slots Video Slots Nature Animals Wildlife Buffalo

Wildlife slot shaped by multiplier Wilds and animal transformations

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96%

return to player

Volatility

—

variance

Max win

—

top multiplier

Min bet

$0.20

per spin

Reels

25 lines

Player rating

4.8 ★

14 votes

DEMO Play free, no signup

Red Rake Gaming

Embed on your site

4.8 / 5

14 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96% → 9.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential—

no data

Features7/10

9 features → 7.0/10

Game Mechanics5.6/10

f=9 r=5 p=25 → 5.6/10

Context signals (tie-breakers)

Layout5/10

3x5 → 5.0/10

Bet Flexibility6/10

0.2–50 (×250) → 6.0/10

Provider Reputation6.3/10

provider avg 6.3 → 6.3/10

Popularity0/10

synthetic proxy → 0.0/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 61 — Grand Bison by Red Rake Gaming

https://slotranker.com/red-rake-gaming/grand-bison#score

How to cite

Slot Summary

A five-reel grid that turns Wild frequency into a rising multiplier effect gives Grand Bison its defining structure. Red Rake Gaming pairs 25 paylines with Wild multipliers, then shifts the Free Spins round toward symbol conversion: collected Scatters gradually turn animal symbols into regular Wilds and can add more spins. The wildlife setting is therefore more than surface decoration because its animal cast becomes part of the bonus logic.

How It Plays

Regular spins use 25 paylines, with winning combinations counted from the leftmost reel. Wild symbols substitute for other symbols apart from Scatters.

The principal change comes from Wild Multipliers. One, two, or three of these symbols apply progressively larger multipliers to the total win from that spin.

Theme & Atmosphere

Grand Bison uses Animals, Buffalo, Nature, and Wildlife as a coherent setting rather than mixing unrelated motifs across the reels and bonus round.

The bison, lynx, and wolf matter mechanically because the Free Spins counter can transform them into Wilds as more Scatters are collected.

Nature Animals Wildlife Buffalo

Features & Win Potential

Wild Multipliers combine substitution with a multiplier applied to the total spin win, making their simultaneous appearance more important than an ordinary Wild landing.

The Symbols collection mechanic records Scatters during Free Spins. Reaching its thresholds converts specified animal symbols into Wilds and can grant Additional Free Spins.

Free Spins Multiplier Scatter Symbol Wild Symbol Wild Multipliers Symbols collection (Energy)Additional Free Spins Gonzo mechanic Substitution Symbols

Bonus & Free Spins

Three Scatter Symbols trigger seven Free Spins at the activating bet level. The same reel configuration remains in use while the collection counter tracks further Scatters.

As the counter advances, animal symbols become regular Wilds. Later thresholds also award Additional Free Spins, allowing the transformed symbol set to remain active longer.

Spec sheet

Grand Bison at a glance.

Identity

Slot nameGrand Bison

StudioRed Rake Gaming

Released6/25/2025

Math

SlotRanker Score61

RTP96%

Max win—

Bet range$0.20 – $50.00

Player rating4.8 / 5 · 14 votes

Format

Reels5

Paylines25

Layout3x5

Features

Themes

Expected average based on this slot's 96% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.20

Cost per session$3.20

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Grand Bison? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Mediumassumed — not published for this slot

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (96.00%), with wins capped at its top multiplier (1,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Grand Bison

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Compare Grand Bison with other games

	Grand Bison Score 61This game	3 Charge Buffalo Score 85	Grand Buffalo Hold & Win Score 84	Wild Buffalo: Hold ‘n’ Link Score 79	Crazy Buffalo Score 78
Identity
Studio	Red Rake Gaming	Jili Games	BGaming	NetGame Entertainment	Fa Chai Gaming
Released	6/25/2025	12/30/2024	—	4/29/2022	12/13/2022
Math
RTP	96%	96.27%	96.7%	96.22%	96.5%
Volatility	—	Medium/High	High volatility	Medium/High	Medium/High
Max win	—	—	5,000×	5,000×	10,000×
Format
Reels	5	5	6	5	5
Layout	3x5	5x3	6x8	5x4	5x4
Paylines	25	1024	—	1024	1024
Min bet	0.2	0.2	—	0.1	0.6
Max bet	50	200	—	100	60
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	—	✓	—
Bonus game	—	—	✓	✓	—
Respins	—	—	✓	—	—

Every number is shown as a delta against Grand Bison.

Comparing against

Grand Bison

Red Rake Gaming

RTP

96%

Max win

—

Score

Grand Buffalo Hold & Win

+ Bonus Game+ Respins− Multiplier

Wild Buffalo: Hold ‘n’ Link

NetGame Entertainment

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