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Mystery Stacks Deluxe Slot Relax Gaming

Mystery Stacks Deluxe Review - Editor’s Impressions

Many slot players are deeply nostalgic for the retro casino scene. However, with modern slots appearing with so many improvements, newer fruit slots tend to be bland. If you’ve experienced something similar, you haven’t tried Mystery Stacks Deluxe yet! We’re here to give you a Mystery Stacks Deluxe slot review so you know there are good modern fruit slots out there. 

We’ve tried uncovering the mystery behind the Mystery Stacks Deluxe slot machine firsthand. We first noticed that although the slot uses fruit symbols, the theme leans towards futuristic slots. 

The game has many exciting features, like the Golden Mystery Tokens feature appearing frequently. As the game's main attraction, the tokens helped us immensely in creating frequent wins. 

Overview of Mystery Stacks Deluxe Game

Mystery Stacks Deluxe is a new instalment in the Relax Gaming Mystery Stacks series. The game’s layout is the standard 5x3 reels. Design-wise, the game looks almost identical to the previous version, but several improvements are hidden behind the scenes. 

Compared to the original Mystery Stacks, the Deluxe version provides double the original’s Max Win and includes new features. The first version doesn’t offer the features of the Multiplying Wilds and Bonus Wheels, so those who have played the original can enjoy something new. 

Mystery Stacks Deluxe RTP, Payout and Volatility

Mystery Stacks Deluxe RTP is 95.52%. The game has a medium-high volatility and 10 paylines. The Mystery Stacks Deluxe game allows players to bet £0.10 to £100 per spin, but we might see a change in the bet range for the Mystery Stacks Deluxe real money version. 

Fruit are the low-value symbols, with the cherries paying the lowest. The BARs and golden bell pay higher, and the golden bell is the most valuable as it can pay up to 30x your bet for five of a kind. There’s a max win of 1,000x possible through the bonus wheel round.

Mystery Stacks Deluxe Graphics and Gaming Experience

The Mystery Stacks Deluxe game stays faithful to the original disco dance floor design. It also looks like a futuristic slot due to the many lights and metal decorations around the reels. The symbols aren’t anywhere close to how retro fruit slots usually look: the fruit look polished and 3D. 

The soundtrack uses slow R&B beats, which we rarely find even in our online slots reviews list. They’re the ultimate relaxing type of slot you can enjoy even with the music to the maximum volume. 

Mystery Stacks Deluxe Bonus Features

The Mystery Stacks Deluxe slot machine is packed with bonus features. The newest one Relax Gaming adds to the Mystery Stacks game is the bonus wheel. Four Scatters gives you a 50% chance of seeing it, but five Scatters guarantees you’ll get to spin it.

It comes with a possible 1,000x max win, or 10 extra Free Spins (added to the starting Free Spins number).

The main feature of the Mystery Stacks online slots is the Golden Mystery Tokens. These golden boxes land frequently and will flip to uncover random matching symbols. The tokens can get as big as 3x3, so it’ll increase the chance of making winning combinations. However, this feature isn’t available in the free games round.

These features can be confusing if you’re accustomed to classic fruit slots. The good news is the Mystery Stacks Deluxe slot demo lets you experience the base and bonus games so you can see how they work.  

Mystery Stacks Deluxe Free Spins

Three or more Scatters trigger the Free Spins. You’ll start with 10 Free Spins, and the Scatters won’t appear during the free games. You can’t retrigger the Free Spins, but the Bonus Wheel can give you additional spins, as noted above.

The free games also add Walking and Multiplying Wilds. If the Wild’s frame forms an arrow, it’ll replace a symbol which the arrow is pointing to into another Wild. The Wild’s frame might point up and down, giving more than one additional Wild. 

These special Wilds can move across the slot reels and multiply themselves to give more Wilds. These special Wilds only work in the free games.  

What Are the Pros and Cons of Playing Mystery Stacks Deluxe?

We enjoyed all the slot offers, but to provide you with a helpful Mystery Stacks Deluxe slot review, we’ll give you complete pros and cons. Here are what you can consider before trying out Mystery Stacks Deluxe.


  • The Golden Mystery Tokens appear often and make symbols land stacked
  • Offers multiple bonus features
  • Impressive design


  • The main feature (Golden Mystery Tokens) doesn’t apply to the free games
  • Players can’t retrigger Free Spins while the feature is active  

Where to Play Mystery Stacks Deluxe Online

You can browse our list of online casinos to find the best Mystery Stacks Deluxe online casino that fits your preferences. 

These casinos feature multiple popular games from Relax Gaming so you can try similar slots like Blender Blitz, another fruit slot from Relax Gaming. 

Our top Mystery Stacks Deluxe online casino is Kakadu Casino

Summary of Mystery Stacks Deluxe - Uncovering The Mysterious Tokens

Online slot bonus features are hard to trigger, but we love to see how the Golden Mystery Tokens appear almost on every spin. Unfortunately, the game doesn’t carry the Golden Mystery Tokens into the Free Spins, as they’re one of the most helpful features of the slot. However, the in-game bonus wheel allows players to hit bigger in the free games. 

Another feature that we liked is the special Wilds in the Free Spins. For a modern fruit slot, Mystery Stacks Deluxe delivers an exciting experience that you can also try through the Mystery Stacks slot demo

Play game
Software Relax Gaming
Slot Type Video slots
RTP 95.52%
Special feature Wild Scatter Free Spins
top10 Slot details
top10 More slot details More details
  • Software
    Relax Gaming
  • Slot Type
  • Paylines
  • Reels
  • Min Coins Size
  • Max Coins Size
  • RTP
  • Bonus Game
  • Progressive
  • Wild Symbol
  • Scatter Symbol
  • Autoplay Option
  • Multiplier
  • Free Spins
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