American nature-themed pokie called Grand Bison was released by Red Rake Gaming at the end of June 2025. The gameplay is organized very simply: there is a small field, line payouts, and from the bonus features - only freespins and an additional multiplier at Wild. Therefore, the slot may be of interest only to fans of classic machines that do not need a diverse set of bonuses.
Type of game | Pokies |
Manufacturer |
![]() |
Theme | Animals, Adventure, Gold, Luck, Action, Nature, Money |
Min bet | 0.20 € |
Max bet | 50 € |
RTP | 96% |
Is free test available | Yes |
Mobile version | Yes |
Issue date | June 26, 2025 |
Progressive jackpot | No |
Reels number | 5 |
Lines number | 25 |
Wilds | No |
Scatter | Yes |
Gamble Feature | No |
Volatility | Middle |
3D slot | Yes |
Respins | Yes |
Freespins | Yes |
Progressive multipliers | Yes |
Bet line | 0.2 - 50 |
Bonus games | Free Spins, Bonus Game, Respin, Wild Multipliers |
Searching for a honest casino can stretch for more than one hour. The reason is that scammers can also add games from Red Rake Gaming to their catalog. To avoid wasting time checking every site you find - choose already verified casinos from our rating. That way you can start playing Grand Bison right away.
The demo version allows you to play for free without the risk of losing real money. It will help beginners to understand the rules and mechanics. The user can test the bonus features and payoff. Launch the demo game on the same page above - we have added it to the review.
If you like the pokie and want to move on to real money betting, we've added a Casinoz list at the end of the page. We've added a number of trusted sites to it. Each of them has Grand Bison, so you can quickly go to the casino to register. If you want to choose a site by some criteria - you can first read our reviews: they are ready about each of the proposed casinos.
The pokie has simple rules and a small bonus feature. The playing field is divided into a 5x3 grid. Payouts are formed on 25 fixed lines. Any line pays only from left to right and must include at least 3 identical simple symbols in a row (except Wild - it pays in the amount of 2+). There are 9 simple symbols in the game. From the bonus functionality there is only a free spin round and an additional multiplier at Wild.
For 1 spin you can bet an amount from 0.20 to 50.00 in the currency chosen by the casino administration.
There are 2 kinds of symbols that have special properties added:
Scatter. When any cells will fall 3 such symbols - the gambler will get 7 free spins and payout x1 of the bet.
Wild. There are two kinds: silver and gold. Both substitute for any of the simple symbols if it helps to form or extend a winning combination. The golden Wild additionally participates in the Wild Multiplier feature.
2 bonus features have been added to the gameplay:
Wild Multiplier. If a golden Wild (1 or more) is involved in a winning combination, an additional multiplier is applied to the payout: x2 for 1 Wild, x3 for 2 Wilds, or x4 for 3 Wilds in a lineup.
Free Spins Bonus. Works in free spins only. Next to the field appears counter, divided into 3 parts: 3, 5 and 5 cells. Each Scatter symbol that falls on the field, fills 1 cell. When the first part of the counter is filled (3 Scatters are accumulated), all symbols - rats turn into Wild. When the second part of the counter is filled (5 more Scatters accumulated, or 8 in total) - all bison symbols will turn into Wild, and the gambler will get +2 FS. When the third part is filled (5 more Scatters, or 13 in total) - all wolf symbols will turn into Wild, and the gambler will get +2 FS.
A round of 7 free spins is automatically triggered if 3 Scatters appear on the field simultaneously on any cells. The game follows the same rules as the simple spins.
The only difference is that the Free Spins Bonus feature works, where you can win up to 4 extra FS and turn simple symbols into Wild.
The pokie's payoff depends on these parameters:
Return to Player: 96% (not bad, but not the highest).
Volatility is at the "medium" level. The provider didn't specify it exactly, but that's the impression I got while playing the demo.
For every 100 spins there will be about 16-18 winning combinations. This is my opinion after 40 minutes of playing in demo mode.
Grand Bison | Janissaries | Boat Bonanza CrocoNile! | Lucky Dog | |
---|---|---|---|---|
RTP | 96 % | 98.08 % | 96.25 % | 95.50 % |
Volatility | Middle | High | Middle | Middle |
Lines | 25 | 12 | 5 | |
Drums | 5 | 6 | 5 | 3 |
Issue date | 26 June 2025 | 15 April 2025 | 1 May 2025 | 21 April 2024 |
Scatters | ||||
Free Spins | ||||
Respins | ||||
Progressive multipliers | ||||
Jokers | ||||
Max payout | 0 | 10000 | 6000 | 1000 |
Bonus Games | ||||
Gamble Feature |
No single player action will help attract a winning combination. It is also impossible to guess when the pokie will pay and when it won't. In each spin, the set of symbols on the field is determined randomly, with no patterns. The player can not influence it. Therefore, it is useless to look for strategies.
But it is useful to apply strategies that will help to increase the number of spins. Choose those casinos that have the biggest bonuses. Do not play at high stakes - on the contrary: bet the minimum amount.
Slot machine | RTP | Volatility | Max win | Release date |
---|---|---|---|---|
Legacy of Athena | 96.60 % | High | 894 | 17 July 2024 |
Jungle Break | 95.40 % | Middle | 1483 | 16 March 2024 |
Million Zeus | 96 % | High | 10000 | 30 December 2021 |
Gustav Minebuster | 95.50 % | 250 | 10 January 2020 | |
The Adventures of Ali Baba | 95.20 % | 250 | 27 June 2019 |
Most of the pokies of the Red Rake Gaming provider have the same interface, but in Grand Bison it is implemented differently. There are 3 icons above the field - x2, x3 and x4. When the Wild Multiplier function is triggered, the corresponding multiplier will light up. The rest of the interface elements are collected at the bottom. Under the field appears the text - the basic game rules and a description of the bonus features. Below are buttons and information. From left to right: balance, Pay Table button, Win window (here appears the amount of winnings in the last spin), bet change block, Auto Spin and Spin button. Along the bottom border of the screen there is another 1 block of the interface with a dark background. It repeatedly shows the balance, bet size and win amount, and there are 4 buttons (in the left corner) - game history, full screen mode, sound settings and menu. Hidden in the menu are 3 items - exit slot, game history and Help (this is a link to the detailed rules). Here are some tips for players who are interested in this slot:
Take a trial session in demo mode to see how well the pokie pays and how the Wild Multiplier feature works.
Open the Pay Table section and check out the winnings for each of the symbols.
Turn on autospins so you don't have to hit Spin manually. In pokies from this provider, the autospins mode can only be set for the number of games - from 5 to 100.
Android and iOS browsers will automatically load the mobile version with a larger and simplified interface. It will be convenient to play on your phone or tablet. Gadgets of any diagonal are suitable for the game. Due to good adaptation, the pokie does not require a lot of RAM, so even on an inexpensive or old phone, the mobile version will work smoothly and stably.
Casinos editorial sums it up: this is a simple pokie that can briefly entertain the player. There are few bonus features, the gameplay is monotonous, and the payout is slightly better than average.
The rate of return to the player is 96%.
The online pokie offers 5 reels in 3 rows and 25 fixed paylines.
Players can bet a maximum of 50 euros.
Type of game | Pokies |
Manufacturer |
![]() |
Theme | Animals, Adventure, Gold, Luck, Action, Nature, Money |
Min bet | 0.20 € |
Max bet | 50 € |
RTP | 96% |
Is free test available | Yes |
Mobile version | Yes |
Issue date | June 26, 2025 |
Progressive jackpot | No |
Reels number | 5 |
Lines number | 25 |
Wilds | No |
Scatter | Yes |
Gamble Feature | No |
Volatility | Middle |
3D slot | Yes |
Respins | Yes |
Freespins | Yes |
Progressive multipliers | Yes |
Bet line | 0.2 - 50 |
Bonus games | Free Spins, Bonus Game, Respin, Wild Multipliers |