Santa’s Stack Slot Review

Expert Rating: 4.5 out of 5
Review by Martin Backhouse
Last update 1st December 2021
Review by Martin Backhouse
Last update 1st December 2021

The Santa’s Stack slot is an 8 row, 8 column game with a cluster payout mechanic. Produced by Relax Gaming and based on Christmas with flashing lights, elves, red-nosed reindeers and more filling the reels, it comes with a classic retro feel and a couple of appealing bonus features. With free spins, respins and multipliers on offer, there’s potential for 20,000 x max wins. Discover what other appealing features are available in our in-depth Santa’s Stack review.

Santa's Stack Max Win
20,000 x bet
Relax Gaming
Type of Slot
Video Slot
8x8 grid
Cluster Pays
Stakes Range
10p to £50
Bonus Features
Yes (3)
Free Spins/Multiplier
Max Win
20,000 x
Very High

Santa's Stack Demo

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Santa’s Stack Slot RTP, Details & Wager Limits

Reels/Paylines: 8×8 grid + cluster pays

Stakes Range: 10p to £50 per spin

RTP: 96.27%

Max Win: 20,000 x stake per spin

The action in the Santa’s Stack slot plays out on an 8×8 grid with the cluster pays mechanic. Winning combinations are formed by landing clusters of a minimum of 5 matching symbols all the way up to a total of 60.

When a cluster shows as a winner, a cascade then follows. Those winning symbols are removed from the grid, with new ones dropping in to replace them. A new payout consideration then follows and if a winning cluster forms, the process is then repeated. This continues until no new winning cluster is formed.

Stakes range from 10p to £50, so it’s a slot that certainly caters to all bankrolls. To change the bet amount, simply use the – or + on either side of the bet total below the reels.

The Santa’s Stack RTP is 96.27%, which is slightly above average. It does increase to 97% if you buy the feature, but we’ll explain more about that shortly. With a hit frequency of 23.57%, you will enjoy a win on just under a quarter of your spins on average.

Volatility is high and the maximum win here is 20,000 x your stake. While this is great, the extremely high variance means that bigger wins won’t appear as much as a slot with lower volatility. Your best chance of landing the max win will be in the Free Spins feature due to the multipliers and additional free spins.

Theme – Audio & Design Features – retro Christmas fun

Theme: Christmas

High Value Symbol: Santa

Compatibility: Mobile, Tablet, Desktop


Relax Gaming has taken a retro stance here both with the visuals and the soundtrack on the Santa’s Stack slot. A town centre is the setting for this game with snow slowly falling to the ground and seagulls flying by while you spin the reels on a bold blue background.

As the noises of US city traffic and a chiming clock tower dominate the audio, you’ll also hear constant jingling bells and people shouting ‘Merry Christmas’ and ‘Happy New Year’ to keep you in the festive spirit as you play. The spin of the reels also resembles the sounds of video games from the 1980s.

The reels include blue, green, and red lights as the lower value symbols. Reindeers, elves, Mrs Claus and Santa Claus make up the higher value symbols. Santa himself is the most lucrative symbol, paying up to 10,000 x your stake for filling 60 positions. It pays 1x your stake for the minimum 5 symbols in a cluster.

The red ‘W’ is the game’s wild and triggers the Secret Santa Respin feature if it’s part of a winning cluster.

Symbol Payout
santas-stack-slot-blue-light-symbolBlue Light Pays 0.2 to 750 x stake
santas-stack-slot-green-light-symbolGreen Light Pays 0.2 to 1000 x stake
santas-stack-slot-red-light-symbolRed Light Pays 0.2 to 1,250 x stake
santas-stack-slot-reindeer-symbolReindeer Pays 0.5 to 2,000 x stake
santas-stack-slot-elf-symbolElf Pays 0.5 to 3,000 x stake
santas-stack-slot-mrs-claus-symbolMrs Claus Pays 0.5 to 4,000 x stake
santas-stack-slot-santa-symbolSanta Pays 1 to 10,000 x stake
santas-stack-slot-wild-symbolWild Substitutes for all symbols
santas-stack-slot-bonus-symbolBonus 3+ triggers Free Spins feature
santas-stack-slot-mystery-symbolMystery Reveals same symbol once Secret Santa feature is over

Santa’s Stack Mobile


This slot has been fully optimised for play on mobile and tablet devices as well as on desktop computers. Produced using HTML5 devices, the high definition graphics, animations and sounds work on all devices. For the optimum experience, play on a laptop or PC.

Santa’s Stack Bonus Features

The Santa’s Stack slot game comes with 2 main bonus features as well as the chance to buy the feature.

The first is the Secret Santa Respins feature where wilds can help land some big prizes. The second is a Free Spins feature where unlimited free spins and multipliers are up for grabs. Let’s explain both to help understand more about the slot.

Secret Santa Respin feature


This Secret Santa feature is triggered when a wild symbol becomes part of a winning cluster. The winning cluster will then convert into mystery symbols as a respin is granted. Each symbol in the cluster will be wrapped as a Christmas present until the mystery symbols are revealed. Those mystery symbols stay in place on the reels.

When a winning cluster lands next to the previously formed mystery symbols, that new winning cluster also turns into mystery symbols and gives you another respin. This will continue to repeat until no new winning cluster is formed.

Free Spins feature


Land 3 or more Christmas tree bonus symbols on the reels to trigger this feature. You will see a bonus area to the right of the reels with 3 stars. Landing 3 Christmas Trees will fill these stars and the feature will begin.

You will be awarded 5 free spins to begin with, and every additional bonus symbol will give you another free spin.

It’s worth noting here that the Secret Santa feature is also active during the free spins and you are guaranteed to land them at the start of each spin. The guarantee of a wild increases by one per free spin, starting with 1 wild on your very first free spin.

Landing bonus symbols during this bonus round will award you with one of the following prizes:

Blue Christmas Tree +1 additional spin
Red Christmas Tree +1 multiplier
Blue & Red Christmas Tree +1 additional spin & +1 multiplier

Buy feature

Flashing in the bottom left of the Santa’s Stack slot game is a sign with the words ‘Buy Feature’ on. Select this and adjust your bet per spin to buy the Free Spins feature for a certain amount. The RTP during this feature is 97%, but please note that it is not available to buy in the UK

Santa’s Stack Review Summary – A good festive slot

Theme & Symbols

Sounds & Music

Bonus Features

RTP (96.27%)

Max Win (20,000 x)


I like this slot. Not only because the max win is generous, but this one is highly recommended for anyone who enjoys a bit of nostalgia. However, with it being a more unique theme, it won’t be to everyone’s taste. Give our free demo a try first to see if it’s a game you enjoy playing.

The free spins are the best chance of landing the maximum win, but a high number of matching symbols on the 8×8 grid will also pay out a generous amount. Visually the game is great if you like 1980s graphics, and the soundtrack is good too, albeit quite repetitive like plenty of other slots.

Overall, the Santa’s Stack slot is a fun creation from Relax Gaming and one that can be enjoyed all year round, not just at Christmas.

Looking for more festive games? Fat Santa from Push Gaming is a popular choice. Check out our Christmas Slots page to explore plenty more that might take your fancy.

  • 20,000 x stake max win potential
  • Unlimited free spins
  • Great retro theme
  • Highly volatile

Santa's Stack FAQs

What is the Santa's Stack RTP?

The Santa’s Stack RTP is 96.27%, which is just above the average of 96% for this kind of online slot. The variance is very high here though, so expect smaller wins more frequently.

What is the Santa's Stack max win?

The max win here is 20,000 x your total stake. This is best achieved during the free spins feature due to the additional spins up for grabs and the multipliers. But please note that if your wins exceed 20,000 x, you won’t be awarded anything over this amount.

Are there any Santa's Stack free spins?

Yes. Landing 3 or more bonus symbols will trigger the Free Spins feature. 5 will be awarded initially, with an unlimited amount of free spins available if you continue to land bonus symbols.

Is there a Santa's Stack demo?

Yes, the Santa’s Stack free play version is available here at Optimised using HTML5 technology, it can be played on smartphones and tablet devices as well as desktop.