Buffalo Stack N Sync Slot Review (Hacksaw Gaming)

RTP: 96.36%

Provider: Hacksaw Gaming

Best casinos: All British Casino, Kwiff Casino, Casushi, Hot Streak, Hippodrome Casino

Buffalo Stack n Sync Key Features

RTP: 96.36%

Provider: Hacksaw Gaming

Volatility: High

Theme: Buffalo

Reel style: 5x4

Paylines: 10

Stakes: £0.10 - £100

Max Win: 10,000x

Free Spins

Stack n Sync


Buffalo Stack n Sync sees Buffalo, Eagles and much more all in one place in the heart of America with this slot featuring classic symbols, two mega bonus games and a huge max win of 10,000x.

Hacksaw Gaming have this game down as high volatility which is no surprise to slot players who’ve played on this provider before with that scale ranking 4 out of 5 in terms of volatility. With Stack’n’Sync symbols and Stampede reels there are plenty of ways to hit big in this one. 

The Max Win in Buffalo Stack n Sync is 10,000x with Hacksaw Gaming being no stranger to a high Max Win in their games.

There are two Bonus Features in Buffalo Stack n Sync with the standard Free Spins hitting with 3 flaming scatter symbols. These spins see better odds of landing the Stack’n’Sync symbol with higher paying animal symbols more likely to land too. Stampede Spins only feature non paying skull symbols and buffalo symbols, along with stack scatter symbols, to potentially give you massive wins in this bonus.

Casinos that offer Buffalo Stack n Sync slot sorted by RTP

Wager on any slot & get 200 Real Money Free Spins!

  • Wagering req. 0x
  • Value/free spin £0.10
  • Offer amount £20
New customers only, wager £20 on slots and get 40 cash free spins for 5 consecutive days. £20 stake on slots each day within 5 days of 1st deposit to qualify. £0.1 spins on Book of Dead. £250 total max withdrawal. Full T&Cs apply.
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Up to £50 Welcome Bonus

  • Wagering req. 50x
  • Value/free spin -
  • Offer amount £50
18+ to participate. New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements . Debit Card deposits only. This offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus. Full terms apply. Licensed as Betway Limited, UKGC no. 39372
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10 No Deposit Bonus Spins on Finn and the Swirly Spin

  • Wagering req. 60x
  • Value/free spin £0.10
  • Offer amount £1
Available for new registrations only. Max 10 bonus spins credited upon SMS validation. Finn and the Swirly Spin only. 60x Wagering, 4x Conversion up to £200. 18+. Full T&Cs apply.
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100% Welcome Bonus + 50 Bonus Spins!

  • Wagering req. 40x
  • Value/free spin £0.10
  • Offer amount £55
100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply.
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100% up to £100 + Always 10% Cashback!

  • Wagering req. 35x
  • Value/free spin -
  • Offer amount £100
#AD New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply
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100 Spin Test

This 100 Spin test was updated by Steve Madgwick on 29/5/2023 

100 spins is not a Real Test

We give every slot a 100 spin test to see just what it can do, or not as the case can often be - 100 spins is no reflection of the likelihood of any other 100-spin session, as RTP's are set over many millions and probably billions of spins. So this 100 spin test is just for entertainment and insight purposes

Element Outcome
Session RTP 110%
Win Frequency Medium 22/100
Biggest Base Game Win 90x
Spins to Bonus n/a
Bonus Paid n/a
Time Taken for 100 Spins 4:20

The Spin Test criteria can be found at the bottom of the page

Test Comments

This was a pretty swift 100 spin test taking just over 4 minutes to complete with the auto spins set. The win frequency was meager, although it improved late on to hit medium with 22 spins returning something.

The free spins round was not hit, but the Stack n Sync feature did land and with style, albeit on queens resulting in a full screen finally paying a very nice 90x. With the session RTP hitting 110%, you can see that without the SNS win it would have been a dire session.

The game bolys along at a pace and can be a real cash guzzler so go careful with this high volatility slot from Hacksaw Gaming

Buffalo Stack n Sync Expert Review

Theme & Symbols
Bonus Features
Max Win (10,000x)
Sounds & Music
RTP (96.36%)

Game Data

With Stack’n’Sync symbols, Stampede Reels and two great bonuses, Buffalo Stack n Sync sees us on the Great Plains in America without a bit of suncream in sight.

5 reels and 4 rows greet us in this slot game, with the format a straightforward one in an era with slot games with clusters and megaways. 10 paylines are all that’s needed in this game to hit big with that high volatility showing that big wins can take place in this game.

Stakes in this game start at 10p and go up to £100 with the RTP set to 96.36%. 

OLBG has a huge list of the best online slots ranked and reviewed by experienced slot players.

Game Data Table Slot Review

 Slot Review Key Features
Studio Hacksaw Gaming
Theme Buffalo
RTP % 96.36%
Volatility High
Reel Style 5x4
Paylines 10
Stake Range £0.10 - £100
Max Win 10,000x
Special Symbols Stack’N’Sync, Flaming Scatter
Features Free Spins Bonus and Stampede Spins Bonus
Jackpot None

Graphics, Music, and Sound Effects

It’s no surprise to anyone to see a Hacksaw Gaming slot have great graphics and it’s the same with Buffalo Stack n Sync with bright colours and shiny symbols featuring in the slot.

Buffalo Stack n Sync has special Stack’n’Sync symbols which when landed will respin again with either 15, 30, 45 or 60 of those specific symbols added to that reel. Only 1 Stack’n’Sync symbol can land on each reel in a round but you can land on different reels in the respins to eventually get them on every single reel.

The stacked buffalo symbols set the entire reel on fire that it lands on which again is graphically pleasing and those reels land together to activate a stampede reel which gives possible multiplier values from 1x all the way up to 100x.

The background of the reel shows a few different plants and cactuses alongside big rocks from the Great Plains of North America.

Key Features

As with all of our slot game reviews, we must go through the different features in the game so that we really get to grips with it before we play.

We’ll go through the Buffalo Stack n Sync theme as well as tell you the best features in the game.

Theme – Buffalo

We’ve seen countless Buffalo-themed slots over the years and Buffalo Stack n Sync falls into that category which is no surprise from its name.

With Buffalo’s storming on the reels, it’s no surprise to hear a Western-style twang in the soundtrack fit for any cowboy film.

You’ll see basic symbols of 10, J, Q, K and A in this game with Premium Symbols featuring different animals from the Wild West including horses, eagles, wolves and of course Buffalo. The wild symbol in this game is a cactus with 5 of those symbols paying 20x your bet.


Buffalo Stack n Sync features 5-reels and 4 rows.


There are 10 paylines in Buffalo Stack n Sync. 


As with every slot game one of the most important bits of information is the Return to Player and it’s no different with Buffalo Stack n Sync. The RTP in this game is 96.36%.

As always this percentage is not the same everywhere and online casinos often alter these figures according to their current policies. To spare you the trouble, we shared a list of UK casinos where you can play this game and the respective RTPs found there.

For an even more informed decision, we advise you to check our reviews and read about the casino's welcome bonuses and deals, game libraries, customer care, payment options, and other things available in each casino.

Casino RTP% Review
All British Casino 96.36 Read Now
Kwiff Casino 96.36 Read Now
Casushi 96.36 Read Now
Hot Streak Casino 96.36 Read Now
Hippodrome Casino 96.36 Read Now

Several top-ranking operators have the Buffalo Stack n Sync slot in their offer, and many of them include a solid RTP for this title. Those who want to try other releases in well-established casinos should check the list of slot sites we recommend.

Stake Range

The stake range will always vary from different sites with some capping the stake with its high volatility but the Hacksaw Gaming site states stakes from 10p to £100.

Max Win

The Buffalo Stack n Sync online slot limits the maximum win at 10,000x the player’s bet.

Free Spins

There are two free spin features available in Buffalo Stack n Sync with 3 scatter symbols triggering the basic Free Spin feature with 10 free spins on offer. This bonus gives a better chance of landing stack’n’sync symbols on the reels with high paying symbols also having more chances of stacking here than the base game.

The Stampede Spins bonus triggers when you hit 4 scatter symbols. This again gives you 10 free spins but the only symbols that feature in this one are non-paying skull symbols and premium buffalos. Every SNS symbol that lands gives you 5-60 buffalo symbols to add to that specific reel with massive chances of hitting big in this bonus.


The Buffalo Stack n Sync online slot game doesn’t have a jackpot prize but does have a Max Win of 10,000x available to be won in a single spin.

OLBG has a page where you can find the best jackpot slot games if you are genuinely interested in such titles with big jackpots available.

Play Experience & First Impressions

My experience of Buffalo Stack n Sync made me feel like this game was a bit out of place for what Hacksaw Gaming usually releases. We’ve seen some unusual themes like Gladiators, Undead Zombies and even… Pigs. This game though sees us hit a generic Buffalo theme that we’ve seen many times over the years, but at least it has a different take on it.

The bulk of this game is through hitting the SNS symbols because without them, realistically, you’re pretty much hitting nothing. Seeing more and more of these symbols come through though before all 5 reels are full of them sees you start to see big wins come through.

You can tell that this game can give you mega wins and from the small play of it we’ve had you aren’t surprised that the 10,000x Max Win can come through with buffalo stacked reels starting to feature more and more the more spins we did. Despite us failing to hit the bonuses we’ve seen them in action and the Stampede Spins can hit big, but the plus side is that you can really see the potential in the standard free spins too.

Expert Verdict

Our overall verdict of this game is that Hacksaw Gaming have release another decent game that uses the same kind of themes that we’ve seen in the past. It doesn’t detract from the graphics and style of the game itself, but those recurring themes can start to see the game become stale.

With a high volatility you don’t get to see regular wins on the reels on this one, but when you do hit you tend to hit big with 10 and 20x wins getting thrown about everywhere. SNS symbols are a great new feature and it would be no surprise to see Hacksaw use the Stack n Sync feature in even more releases down the line.

Editorial Information

Buffalo Stack n Sync slot review was written by the OLBG Slots Content Team, beginning with Andrej Trajkovski, who has worked in the online gambling industry since 2013, playing and reviewing online slots and casinos daily for the past four years. 

Contributing to the review was Jake Ashton, a slots fan who is also part of the casino and sports betting team here at OLBG and Jenny Mason with Online Casino, Bingo and Slots Experience from over 15 years in the industry. 

The review is Fact Checked by William Westerlund, an online casino expert reviewing casinos and slots for over five years, and published by Steve Madgwick, our Editor-In-Chief with over 18 years of experience creating and managing high-quality sports betting and Casino content for OLBG & multiple other publications and a self-confessed online slots fans who has played at 100's of the best slot sites online and completes the Spin tests.

100 Spin Test Criteria

The 100 Spins test is undertaken on a demo slot, staking 100 spins at £1 per spin

Session RTP - Return to the player after 100 spins - Eg, A return of £45 from 100 spins is 45%, or a return of £107 is 107%

Win Frequency - A winning spins to spins frequency, higher frequency regardless of prize, is often more entertaining.

  • 0-10 Very Low
  • 11-15 Low
  • 16-30 Medium
  • 21-35 High
  • 36+ Very High

Biggest Base Game Win  - Highest single base game spin winning value

Spins to Bonus - How many spins were completed before the main bonus round was achieved

Bonus Paid - Value of bonus once complete

Time Taken  - How long did the 100 spins take to complete?

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