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Santa's Stack slot

Santa's Stack
Santa's Stack
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Updated: 22.07.2025
Reviewed by: Joe Booth

This year Relax Gaming spent time and effort on the creation of the original Christmas slot, while most of the providers just released a rework of the skin. Welcome to Santa's Stack which comes with a cozy visual presentation in the style of old pixelated games. Wild wins lead to a re-spin feature with the Mystery symbols accumulation during which re-spins are more likely to be triggered as the number of guaranteed Wilds in the bonus round increases. There you can also find the multiplier and the Santa Claus Stack! In this review, we will take a close look at what this sequel consists of: its design, bonus features, paytable and a mathematical model so stay with us.

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Santa's Stack slot

General information about Santa's Stack slot

Rating by Joe Booth:
8.9
Relax Gaming
Write a review +25 SJ points
  • Release Date:
    25.11.2021
  • Volatility:
    High
  • RTP:
    96.3%
  • Multiplier:
    Yes
  • Max. win:
    20,000x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    Cluster pays
  • Slot reels:
    8
  • Layout:
    8-8
  • Stakes range (€/£/$):
    0.10 to 50
  • Slot Theme:
    Christmas
  • Technology:
    HTML5
More infoLess info

Licensed and tested by

  • AGCO
  • eCogra
  • Gambling Comission
  • HM Goverment of Gibraltar
  • MGA
  • ONJN

How to play

The 8-reel, 8-row game board comes with Cluster Pays so there are no paylines. You get payouts by placing clusters anywhere on the grid, and they must contain at least 5 matching symbols and the largest combinations have 60+ symbols. The wild symbol is used for all standard symbols to help make winning clusters more often.

To start this pixel adventure you need:

  • Open the Santa's Stack here for Demo or in casino to play for real
  • Check out the paytable and rules
  • Choose the stake size: from 0.10 to 50
  • Spin the reels!

Santa's Stack RTP and Volatility

8.5 

High risk comes with a 96.27% return.

You will have to make an effort to make the Cluster Pays mechanics work to your advantage, since the slot comes with high volatility, but each cluster created will bring a large prize. As for the RTP, it is 96.27%, which is higher than the market average. In general, the mathematical model of this game would be ideal for high risk/reward players.

Theme

8.8 

We really respect the fact that Relax took the time and effort to create an original Christmas-themed slot. Their Santa's Stack comes with a quality visual presentation in a retro style. Nothing says Christmas like 8-bit snowflakes slowly falling on the decorated shopping street that serves as the backdrop. The playing field is filled with adorable symbols, and Santa himself is a premium prize. The game looks 10 out of 10 and will definitely give you pleasant emotions.

Theme

Santa's Stack slot paytable

Mobile compatibility

Mobile compatibility

Prefer to play your favorite slots on your mobile phone? Then you're in luck with this release! It works as good on mobile phones as it does on PCs, as Relax Gaming created it using HTML5. You can play this new game on any modern device, be it a mobile phone, tablet or computer, and enjoy the opportunity to be anywhere while playing!

About Relax Gaming

It's time to say a few words about Relax Gaming! It is one of the leading providers of casino games. Their talented team strives to create only the best gambling solutions. Most of the Relax portfolio are their own developments, but they also include products from developers such as Push, Fuga and Felt. They create slots, casino games, poker and bingo that are popular all over the world. Their most popular releases include Cluster Tumble, Dead Man's Trail and Roulette Nouveau.

Bonus Rounds & Free Spins

9 

Re-Spins

The re-spins feature will start as soon as the Wild symbol becomes part of the winning cluster. All winning symbols are transformed into Sticky Mystery symbols and the rest of the positions on the playing field are changed. If the winning cluster is next to the Sticky Mystery Cluster, it also transforms into Mystery-locked symbols. This triggers extra re-spins, and Mystery symbols are revealed as a random matching payout symbol when Mystery symbols are no longer generated.

Free Spins

As soon as 3 or more Scatters appear on the grid (anywhere) you get 5 free spins, plus 1 extra free spin for each additional trigger symbol in excess of the minimum 3.

You are guaranteed to get Wild for every free spin, and this increases your chances of getting the Re-spins feature we described above. You start with 1 guaranteed Wild symbol on the 1st free spin, and it increases by +1 for each additional free spin.

You can also get 3 different Christmas tree Scatters during this bonus and they will add +1 to your free spins and / or increase your overall win multiplier by +1.

Santa's Stack slot machine

Bonus Buy

Players living in jurisdictions where it is not prohibited can use the Bonus Buy option by paying 100x. For this amount, they will receive at least 3 Scatters in the next spin and an RTP of 97%.

Santa's Stack Demo play

This game has high volatility so if you still don't feel ready to play for real money, we advise you to first try it in the demo mode, which is already on this page! Just click "Play Demo" and start testing this game without spending a cent. You can familiarize yourself with the gameplay and just have fun by making bets with “fun” coins. Have a fun session!

Max Win

9.3 

Make clusters and trigger bonuses to reach 20,000x max win!

The ability to get up to 10,000x with just 1 cluster is impressive to us, and in order to unleash the potential of 20,000x, you will need to activate a bonus round where there is a 2x multiplier that can give you a max prize for 1 spin. Good luck!

Santa's Stack Video Review

'Twas the night before Christmas, and no slots were spinning. Fingers were still and silence was far and wide. Out of the darkness came a distant cry, “Santa’s Stack is a game we must try! Now, Rudolf, Dasher, Dancer, Prancer and Vixen, on, Comet, on, Cupid, on, Donner and Blitzen! Tonight, the presents can wait a minute; 20,000x we can win, and we’re all in it!” Join the Christmas clan in this festive delight where festivity is on an 8x8 grid, nestled against a retro-style winter wonderland. For fans of the cluster mechanic, this is the gift that keeps giving! Create wins through clusters of five or more matching symbols, with wilds, respins, and the Secret Santa Feature set to help you along. Landing 3 or more Christmas Trees awards the Free Spins feature and 5 Free Spins. The more trees, the more spins - with a max. of 8! With the Secret Santa Feature permanently in action from the initial spin and increasing in size after each one, the chances of being showered in gifts escalates. Players can relive the excitement of Christmas Day as many times as they wish through the Feature Buy option, which is also handy for anyone who’s a little impatient unwrapping gift.

Overall Rating

8.9

Santa's Stac's pixelated charm will surely be strong for you, and it's not often that a studio bothers to create a brand new game to get some extra cash for the winter season. This Christmas game is good enough to keep players engaged all year round, and it is definitely a contender for the best Christmas slot of 2021!

Of course, we have seen how Mystery symbols work many times before, but here it is done cool and with great potential. Up to 10,000x out of 1 cluster is impressive, and the total potential of 20,000x is just wow.

Hits
Respins / Mystery symbols
FS / guaranteed Wilds
Bonus Buy
Misses
Too high volatility for a 1 season slot

FAQ

What bonuses does Santa's Stack offer?

Here you will get a lot of benefits from Wild symbols, Re-spins with Mystery symbols and Free spins with guaranteed Wilds. Also, at any time you can use the Bonus Buy option, which costs 100x and raises the RTP up to 97%.

Is it possible to try this release for free?

Yes, the demo mode of this game is already on this page! Just hit the "Play Demo" button and enjoy your free session.

What is the Return to Player (RTP) in Santa's Stack?

The RTP of the slot is 96.27%, which is higher than the market average and Bonus Buy increases it to 97%!

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Joe Booth
Joe Booth
Expert in: News, Blog, Slot reviews, Payments
Joe is an expert online casino player, who knows all the tricks and tips on how to get to the most massive wins. He is also an experienced online casino games reviewer, with hundreds of written articles behind him, on all kinds of online casino games. He makes sure to play them, see how they work, and then gives his honest expert opinion about them to other players, our readers. 

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Nikita Lukanenoks
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