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Wild Joker Stacks Demo Slot

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Wild Joker Stacks is an online slot developed by Boomerang Studios. It’s a medium volatility (adjustable) slot with an RTP of 95.60% and a top win o...f x288,200. The slot has 5x3-5 reels and 259 paylines. Features include free spins, wild joker multipliers and the option to expand the reels.

Wild Joker Stacks is an online slot developed by Boomerang Studios. It’s a medium volatility (adjustable) slot with an RTP of 95.60% and a top win o f x288,200. The slot has 5x3-5 reels and 259 paylines. Features include free spins, wild joker multipliers and the option to expand the reels.
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Pros
  • Great top win
  • Free spins
  • Expanding grid
Cons
  • Confusing to begin with

Introduction

Wild Joker Stacks by Boomerang is unusual in online slots due to the unfixed number of rows on the reels. Players can adjust the size of the rows up to 5x5, generating more ways to win. Wilds are customisable too, and it’s possible to choose the size of the wild multiplier before each spin.

As you can tell, Wild Joker Stacks departs from the traditional formula in quite a few ways. The symbols are more familiar, however, and will be instantly recognisable if you often play fruit machine-themed slots.

The lucky number 7, a golden bell and some cherries are the highest-paying symbols. They appear on the reels along with various fruits and bar symbols. A diamond bonus symbol awards free spins, and special wilds with an attached multiplier can boost your winnings.

Not only are there up to 259 paylines, but the Connecta Ways system offers you more chances to win (up to 3,125 ways). Symbols only have to touch to form winning combinations.

Theme, Graphics & Soundtrack

Wild Joker Stacks might come with a lot of innovative gameplay features, but it still retains a classic slot theme. This means that all the classic fruit machine symbols are present and correct.

The colour palette of purples and golds gives this slot a luxurious aesthetic, and symbols like the golden bell are particularly sumptuous. Symbols glow around the edges with a soft golden light that makes them appear all the more decadent.

The only complaint that we have involves the music. Although the laid-back tune is in keeping with the overall design, the loop is much too short and the music can become repetitive.

Wild Joker Stacks Demo Slot

Wild Joker Stacks RTP & Volatility

Wild Joker Stacks has an above-average RTP of 95.60% and a top simulated win of x288,200. 

How to play Wild Joker Stacks

We’ve put together this quick guide to help you through your first few spins.

  1. Once the game has loaded, open the main menu by pressing the “i” button. Here you can see the paytable, read about the game rules and get to grips with the bonus features.
     
  2. Wild Joker Stacks' reels are adjustable. You can alter their size up to a maximum of 5x5 by pressing the grid icon (it’s the three lines near the top right of the screen).
     
  3. Wild symbols come with a multiplier that starts at x2, but this can be altered too. Press the wild icon at the bottom right of the grid to adjust the multiplier up to a maximum of x4.
     
  4. Use the “total bet” box to adjust the size of your wager.
     
  5. Set your budget and press the spin button to start playing! Remember that Wild Joker Stacks should always be enjoyed responsibly.

Bet & Win Sizes

The minimum bet size on Wild Joker Stacks is £0.40. The highest possible win for x5 connected symbols is x100.

Let’s take a closer look at the top payouts for x5 connected symbols.

  • Five diamond bonuses - x100
     
  • Five Lucky 7s = x8
     
  • Five golden bells = x6
     
  • Five lemons = x4
     
  • Five strawberries = x4
     
  • Five triple bars = x2.4
     
  • Five double bars = x2.4
     
  • Five single bars = x2.4

Connecta Ways offers 259 ways to win, and the maximum payout is x28,200.

Max-win 28,200x
Volatility Medium
Top RTP 95.60%

Wild Joker Stacks bonus features

As you might expect from a slot with so many innovations, Wild Joker Stacks includes some excellent bonus features.

Wild Joker Bet

Wilds come with a multiplier, and players can adjust its size up to a maximum of x4. It’s important to remember, however, that the higher the multiplier, the larger your wager becomes.

Row Power

Players can add rows to the bottom of the grid, increasing its size up to a maximum of 5x5. Much like the Wild Joker Bet, however, this also increases your wager.

Free spins

A classic and much simpler feature, the player earns a free spin by landing three or more scatter symbols. Although a single free spin might not seem like much, your current multiplier is doubled, which can lead to some hefty winnings with the right amount of luck!

Conclusion

We love how customisable this slot is. Adjusting the size of the grid and multipliers gives the player control over their experience.

Wild Joker Stacks is a fantastic achievement. It looks great, plays smoothly, and brings some completely new features to the age-old formula of online slots!

If you enjoyed Wild Joker Stacks, we recommend the Mega Joker slot, which is available here at Slots Temple!

Slot Data
Slot Name: Wild Joker Stacks
Software: Boomerang Studios
RTP: 95.60%
Volatility: Medium volatility
Paylines: 259
Reels: 5
Min Bet (all lines covered): £0.40 (GBP)
Max Bet: £500 (GBP)
Top Win: 28200
Features: Wild Symbol, Scatter Symbol, Multiplier, Free Spins, 5 Reels, Medium volatility, Wild Multipliers
Themes:
Last Update: 29/06/2026
UK Available in UK? Yes. Boomerang Studios have a UKGC license and are allowed to offer their games at UK licensed casinos.

FAQs

What is the volatility of this slot?

Wild Joker Stacks is a medium volatility slot.

Are free spins available on Wild Joker Stacks?

Yes. Free spins are awarded for landing three or more scatters.

What is the largest win possible on Wild Joker Stacks?

The top payout stands at x28,200.

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