Release the Bison Slot

3.1/5
Based on our expert’s review. Reviewed by
Pragmatic Play Slots: Free Play, Reviews + Casinos
Review by
Martin Backhouse
Updated: 25/04/2024
Review by
Martin Backhouse
Updated: 25/04/2024

Join the big beasts of the great American prairie in Release the Bison, a 5 reel, 20 payline video slot from Pragmatic Play. These cartoon creatures can deliver some top action thanks to wild re-spins with multipliers and a free spin feature with even more wild and multiplier extras. With a better than average RTP of 96.56%, this extremely volatile slot has a maximum win of 3,000 x bet. Find out more in our detailed Release the Bison review.

Max Win
3,000 x bet
Play
T&Cs Apply

18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. Play Responsibly! www.begambleaware.org. #ad

Provider
Pragmatic Play
Type of Slot
Video Slot
Theme
Animal
Reels
5
Paylines
20
Stakes Range
20p to £240
Bonus Features
Free Spins/Multiplier
8-24/1-5x
Max Win
3,000 x
RTP
96.54% | 95.48%
Volatility
Very High

Release the Bison Demo

18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. Play Responsibly! www.begambleaware.org. #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. Play Responsibly! www.begambleaware.org. #ad

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Release the Bison Slot RTP, Details & Wager Limits

Reels/Paylines: 5 reels + 20 paylines

Stakes Range: 20p to £240 per spin

RTP: 96.54% | 95.48%

Max Win: 3,000 x bet

Release the Bison is played using a 5-reel, 4 row machine that’s made up of 20 paylines. Land 3, 4 or 5 matching symbols or wilds from left to right in a payline, starting from the leftmost reel to create a winning combination. It’s a simple, classic setup.

There’s something to suit all bankrolls when it comes to bet levels. Stakes start at 20p rising to a maximum of £240 per spin. Click on the + and – tabs next to the spin button to adjust your bet size.

If you’re playing in a territory that allows autoplay, you can set between 10 and 1,000 autospins. There are also quick and turbo spin modes available. These aren’t available to players in the UK.

In most cases, the Release the Bison RTP is 96.54% which is better than the average figure seen at UK casino sites.. There’s also a version with a 95.48% return to player rate edition so try and find the one with the higher number.

One thing both versions have in common is extremely high volatility. This is 5 out of 5 on the variance scale so tread carefully. The hit rate is 1 in 3.45.

The most you can potentially win from a single spin here is 3,000 x bet. The max win probability is 1 in 16,129,000.

Theme: aesthetically appealing

Theme: Animal

High-Value Symbol: Wolf

Compatibility: Mobile, Tablet, Desktop

release-the-bison-slot-base-game

There’s a cartoonish quality to the design in Release the Bison slot game, which is very easy on the eye. Set against a backdrop of snow-capped mountains and lush green fields, the reels are situated within a wooden frame. The colourful visuals here are terrific, backed by a jaunty soundtrack which is a good fit for this rather light-hearted theme.

There you’ll find A to 10 royals and four higher value animal symbols. The best of the standard symbol is the wolf which pays 10x bet if you land 5 in a line.

The bison is the wild. This substitutes for all the standard symbols when it makes up part of a winner. Finally, there’s the diamond which is the game’s scatter symbol. Land 3 or more of these to trigger the feature round.

Here’s what the symbols award:

Symbol Payouts/Info
release-the-bison-slot-10-symbol10 3, 4 or 5 = 0.15, 0.25 or 0.5 x stake
release-the-bison-slot-j-symbolJ 3, 4 or 5 = 0.2, 0.3 or 0.6 x stake
release-the-bison-slot-q-symbolQ 3, 4 or 5 = 0.25, 0.4 or 0.7 x stake
release-the-bison-slot-k-symbolK 3, 4 or 5 = 0.3, 0.5 or 1 x stake
release-the-bison-slot-a-symbolA 3, 4 or 5 = 0.4, 0.6 or 1.5 x stake
release-the-bison-slot-cat-symbolCat 3, 4 or 5 = 0.5, 0.75 or 2 x stake
release-the-bison-slot-hyena-symbolHyena 3, 4 or 5 = 1, 1.5 or 3 x stake
release-the-bison-slot-eagle-symbolEagle 3, 4 or 5 = 1.5, 2 or 4 x stake
release-the-bison-slot-wolf-symbolWolf 2, 3, 4 or 5 = 0.5, 2, 3 or 10 x stake
release-the-bison-slot-wild-symbolWild Substitutes for all + pays 0.5, 2.5, 5 or 12.5 x stake
release-the-bison-slot-bonus-symbolBonus Scatter 3+ triggers Free Spins feature

Release the Bison Mobile

release-the-bison-mobile-slot

Pragmatic Play has created a fully optimised Release the Bison mobile slot which is available to play on iOS, Android and Windows devices. The smartphone and tablet versions play really smoothly, combining classy sound and visuals with simple but explosive gameplay.

Release the Bison Bonus Features

This wild adventure comes with a good range of extras. Bonus highlights include wild re-spins and free spins with multipliers. You could even benefit from a randomly triggered guaranteed win. We’ll start with the wild re-spins.

Guaranteed Win feature

This can trigger at random on any winless base game spin. The losing combination transforms into a winner and you’ll receive a bonus prize of between 10 x and 40 x bet.

Wild Re-Spin feature

Land 4 or more wild symbols on the same spin and you’ll receive a re-spin. On that re-spin, the triggering wilds roam to a new position on the reels. If a new wild symbol lands on the re-spin, the process is repeated and another re-spin follows. The re-spins continue until there’s one where no new wild lands. If a scatter symbol lands during the Wild Re-spin Feature it’s collected.

If you manage to collect 3 or more Scatters, you’ll trigger the Free Spins Feature.

Free Spins feature

release-the-bison-slot-free-spins-feature

Land 3, 4 or 5 scatter symbols on the same spin (or collect them during the Re-Spin Feature) and you’ll trigger the Free Spins feature. Land 2 scatters and you could randomly receive an all-important third. Before the round starts, you’ll spin a bonus wheel. This determines how many free spins you’ll receive and what multiplier you’ll begin with. The numbers vary depending on how many scatters triggered the round.

  • 3 scatters = 8, 10, 12, 15 or 18 free spins with a 1x, 2x, 3x, 4x or 5x multiplier
  • 4 scatters = 8, 10, 12, 15 or 18 free spins with a 2x, 3x, 4x or 5x multiplier
  • 5 scatters = 10, 12, 15 or 18 free spins with a 3x, 4x or 5x multiplier

Land a wild during this feature and it transforms into a roaming wild which moves to a new position on the reels with each spin. Each wild that lands is also collected in a meter above the reels.

After you have collected five wilds, 1 extra free spin is awarded and the value of the multiplier rises by 1x. One extra spin and a 1x multiplier boost are applied with each subsequent wild that appears. It’s possible to collect up to 10 wilds which means five extra spins as well as a big multiplier boost.

The Free Spins feature will be triggered once every 262 spins on average.

Ante Bet feature

In some jurisdictions, you can increase your chances of triggering the Free Spins by activating the ante bet. This takes your standard bet from 20x up to 25x per spin. For example, a £1 bet becomes £1.25.

Buy feature

There are also options to buy the feature.

  • Trigger with 3 scatters = 80 x bet
  • Trigger with 4 scatters = 150 x bet
  • Trigger with 5 scatters = 300 x bet

Neither the Ante Bet nor the Buy the Feature options are available to players in the UK.

Release the Bison Slot Verdict: Not as good as the Kraken series

3.1/5
Based on our expert’s review. Reviewed by
Release the Bison Slot

Pragmatic Play has produced a very similar slot in terms of mechanics and features to that of Release the Kraken 2, but although the gameplay is good, it’s let down slightly by the low max win potential.

Pros
  • Above-average RTP rate (96.54%)
  • Non-winning spins could be winners
Cons
  • Low max win (3,000 x bet)
  • Release the Kraken series is better

We enjoyed this virtual trip to the American wilderness. Visually, it’s excellent and the soundtrack fits the theme perfectly. Pragmatic Play has packed in a solid range of extras here too. The Wild Re-spins and Free Spins can both deliver some top action if the roaming wilds and multipliers work their magic.

Be warned tough, this wild adventure is an extremely volatile one. The maximum win of 3,000 x bet isn’t the highest you’ll find but the return to player rate of 96.56% stacks up well.

Combine the impressive design with the varied gameplay and in Release the Bison you have a very playable slot. However, when you compare it to the likes of Release the Kraken 2, it just falls short in comparison for me. Check out our free demo and give it a try.

Looking for more bang for your buck? Check out some great Bison-related alternatives. – Big Bad Bison Megaways from Big Time Gaming and Push Gaming’s Bison Battle come with 67,640 x and 50,000 x bet max wins respectively.

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