Timber Stacks Slot Review

3.6/5
Based on our expert’s review. Reviewed by
Pragmatic Play Slots: Free Play, Reviews + Casinos
Review by
Martin Backhouse
Updated: 06/11/2023
Review by
Martin Backhouse
Updated: 06/11/2023

Enjoy the great outdoors amongst some of nature’s finest animals in the Timber Stacks slot from Pragmatic Play. This highly volatile game has up to 100,000 ways to win, an above-average RTP rate of 96.5% and 10,000 x max wins. After every Tumble, there’s a chance the reels can increase up to 10×5 in size for potentially bigger wins. 8 to 10 free spins are also up for grabs where the increasing grid size acts just like the base game. Explore everything this game has to offer below in our comprehensive Timber Stacks review.

Max Win
10,000 x bet
Play
T&Cs Apply

New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad

Name
Timber Stacks
Provider
Pragmatic Play
Type of Slot
Video Slot
Theme
Wilderness
Reels
5x5 Grid
Paylines
10,000-100,000
Stakes Range
20p to £240
Bonus Features
Yes (3)
Free Spins/Multiplier
8-10/NA
Max Win
10,000 x
RTP
96.5% | 95.6% | 94.5%
Volatility
Very High (5/5)

Timber Stacks Demo

18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 31.03.25 | £5 max bonus stake T&Cs apply #ad

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Timber Stacks RTP, Details & Wager Limits

Reels/Paylines: 5×5 grid + up to 100,000 ways to win

Stakes Range: 20p to £240

Max Win: 10,000 x stake per spin

RTP:  96.5% | 95.6% | 94.5%

The Timber Stacks slot is played on a 5×5 grid initially and has 10,000 ways to win. The reels can increase in size up to 5×10 which allows for 100,000 ways to win. After every spin, all winning symbols disappear and the remaining symbols will fall to the bottom of the reels to make way for new ones coming from above. This continues until no new winners are formed.

Stakes range from 20p per spin up to £240, thus catering to higher stake and low stakes players. Just like all Pragmatic slots, simply use the + and – buttons on either side of the spin button to adjust your total bet. Autoplay and turbo spins may also be options in your country.

The Timber Stacks RTP is 96.5%, which is well above the industry average. But it’s important to note that there are a couple of other RTP versions that UK online slot sites have access to – 95.6% and 94.5%. You can find out which version you’re playing by checking page 4 of 7 of the paytable.

The hit rate is 1 in 4, which means that a quarter of all spins on average will result in a winning combination. In terms of volatility, it’s as high as it can be and rated 5 out of 5 by the provider.

The maximum win is 10,000 x the bet. This is best achieved when the reel size is at its largest, which we will elaborate on more in the bonus features section of the review below. The max win probability is 1 in 14,326,648, which is quite high when you compare that to some previous releases such as Viking Forge and The Money Men Megaways that boast the same max win potential.

Theme – enjoy the North American wilderness

Theme: Wilderness

High Value Symbol: Wolf

Compatibility: Mobile, Tablet, Desktop

timber-stacks-slot-base-game

Head into the mountains and spin away to your heart’s content with the sound of nature in the background. Listening to the whistle of the wolf, the growl of the bear, the chirping birds and the running water from a stream. If you listen closely, you’ll notice that the sounds all make up the animals that appear on the reels.

In terms of the soundtrack, it’s very pleasant and quite calming before you hit the spin button. Once those reels start spinning, the audio ramps up and it sounds almost country-like. It fits the theme well. Land the Free Spins feature and day turns to night as the audio switches to give everything a different feel. Keep an eye on the animals in the background too! It’s not interactive or anything, but the visuals are enhanced with the animals running behind the reels.

On the reels, the A-10 Royals make up the lower-paying symbols. These are joined by higher-paying animals – fish, cougars, owls, bears and wolves. The wolf symbol is the most rewarding, paying 1, 3 or 10 x the bet for 3, 4 or 5 in combination. The game’s Wild substitutes for all except Scatter and will appear on reels 2, 3 and 4 only. Here’s a helpful table showing you the symbols you’ll come across in the game:

Symbol Payouts/Info
timber-stacks-slot-10-symbol10 3, 4 or 5 = 0.1, 0.4 or 0.8 x stake
timber-stacks-slot-j-symbolJ 3, 4 or 5 = 0.1, 0.4 or 0.8 x stake
timber-stacks-slot-q-symbolQ 3, 4 or 5 = 0.1, 0.4 or 0.8 x stake
timber-stacks-slot-k-symbolK 3, 4 or 5 = 0.2, 0.5 or 1 x stake
timber-stacks-slot-a-symbolA 3, 4 or 5 = 0.2, 0.5 or 1 x stake
timber-stacks-slot-fish-symbolFish 3, 4 or 5 = 0.4, 0.8 or 1.5 x stake
timber-stacks-slot-cougar-symbolCougar 3, 4 or 5 = 0.4, 0.8 or 1.5 x stake
timber-stacks-slot-owl-symbolOwl 3, 4 or 5 = 0.5, 1 or 2 x stake
timber-stacks-slot-bear-symbolBear 3, 4 or 5 = 0.6, 1.5 or 4 x stake
timber-stacks-slot-wolf-symbolWolf 3, 4 or 5 = 1, 3 or 10 x stake
timber-stacks-slot-wild-symbolWild Substitutes for all except Scatter
timber-stacks-slot-scatter-symbolScatter 4 or 5 in view triggers Free Spins feature

Timber Stacks mobile

timber-stacks-mobile-slot

Like other Pragmatic titles, the Timber Stacks mobile slot was produced using the latest HTML5 technology. This means it’s compatible with mobile, desktop and tablet devices. When it comes to mobiles, it’s available on Android and iOS smartphones. For the optimal visual experience, a larger screen (i.e. laptop and/or PC) is recommended due to the increasing reel size.

Timber Stacks Bonus Features

There are 3 bonus features to enjoy in the Timber Stacks slot game. The reels can increase in size from the standard 5×5 setup to 10×5 for potentially bigger and there’s a typical Free Spins feature too and the option to buy them if you’re outside the UK. Read on as we explain how everything works to give you a better understanding of the slot overall.

Increasing Grid Size feature

After the Tumbles have ended and there are no more winning combinations, there’s a random chance that this bonus feature triggers. When it does, 1 more empty row of symbols is added to the bottom of the reels and a random reel is selected to fall to the bottom.

If reels 1 or 2 are selected to fall, all of those symbols will fall to the right, adding the symbols currently on them, from top to bottom, in as many positions as are empty. New symbols then fall from above to fill the reel that fell.

The same happens with reel 3 but the symbols will fall from either right or left. If it’s reel 4 or 5, those symbols will fall to the left. Once all tumbles from the same spin end, the reels reset back to a 5×5 in size.

Free Spins Feature

timber-stacks-slot-free-spins-feature

Land 4 or 5 Scatters in the base game of the Timber Stacks slot game to trigger this bonus feature. You will get 8 or 10 free spins respectively and the Increasing Grid Size feature plays out in the same way as the base game. No retriggers are possible here, so you’ll simply spin away until your free spins run out.

1 in 439 spins on average will trigger the Free Spins feature

Buy Bonus Feature

Non-UK players can pay 120 x the bet for the Free Spins feature. 4 or 5 Scatters will then land randomly on the grid. Additionally, non-UK players can also increase their base bet by 25% for a better chance of landing the Free Spins feature.

Timber Stacks Slot Review Summary – increase the reel size for bigger wins

Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.5%)








Max Win (10,000 x)








Originality








If you like Tumbling action, you’re in for a treat here as the Timber Stacks slot has that in abundance with the added bonus of increasing the reel size up to 5×10 for 100,000 ways to win. But while there is a Free Spins feature, I was left a little disappointed as there are no extras here that should really take it to another level when compared to the base game.

Furthermore, I have to say that it took me a hell of a long time to trigger the Free Spins feature during testing. The hit frequency for this feature is 1 in 439 spins on average, and I can confirm that it’s an accurate figure.

I appreciated the visuals, especially when the Free Spins feature was triggered. It’s nothing amazing of course like some slots in a graphical sense, but the provider’s done well nevertheless for a slot that’s not had an unlimited budget pumped into it. The soundtrack is pretty good too.

Overall, the 10,000 x max wins and the above-average RTP rate of 96.5% will catch the eye. What I would have loved to see was a few more extras thrown into the mix to move this slot from the above-average range into the good/great range. Don’t hesitate to try our free Timber Stacks demo slot and decide for yourself whether it’s worth your time and money.

For more animal-related action check out Stakelogic’s Bison Blocks slot, which has 15,000 x max wins and up to 46,656. Alternatively, give Buffalo Toro a try from ELK Studios. It comes with some great bonus features and 50,000 x max wins.

Pros
  • 10,000 x bet max wins
  • Up to 100,000 ways to win
Cons
  • Highly volatile
  • Not easy to trigger Free Spins feature

Timber Stacks FAQs

What is the Timber Stacks RTP?

The Timber Stacks RTP is 96.5%, which is quite generous and well above the average figure for an online slot. But please note that there are other RTP versions available for casinos to use – 95.6% and 94.5%.

What is the Timber Stacks max win?

The maximum win is 10,000 x the bet. This is best achieved when the reel size is at its maximum of 10×5 for 100,000 ways to win.

Are there any Timber Stacks free spins?

Yes. Land 4 or 5 Scatters in the base game to trigger the $1. You will receive 8 or 10 free spins respectively and the increased reel size will play in the same way as the base game. We explain how it works in full in our review.

Is there a Timber Stacks slot demo?

Yes, you can play the $1 for free here at Online-Slot.co.uk. Available on mobiles, tablets and desktops, it’s a great way to test the slot thoroughly before using any of your own funds.