Double Stacks

by NetEnt

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RTP 96.1%

Volatility MED

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Slot review

Double Stacks
RTP 96.1%
Volatility MED
This slot is available at High 5 Casino, McLuck Online Casino, Pulsz Social Casino, Betrivers.net Casino

Double Stacks

This Double Stacks review invites you to join a colorful and fruity party. Released in September 2018, the 5×3 slot offers a more contemporary take on the classic fruit machine. 

Featuring a stacked symbols mechanic, this highly-volatile game promises a juicy 10,000x maximum payout and a 96.10% RTP. What’s more, there’s a retriggerable free spins bonus that you won’t want to miss.

Ready to learn more about this NetEnt slot? Keep reading our Double Stacks review.

Software ProviderNetEnt
Release DateSeptember 2018
RTP96.10%
VolatilityHigh
Max Win10,000x
Reels x Rows5 x 3
Minimum – Maximum Bet$0.10 – $200
Number of Paylines10 
ThemesFruit machine

Basic Details of the Double Stacks Slot

Double Stacks Details, RTP and Volatility

This NetEnt slot grid features a conventional grid of five reels and three rows. Although there are only ten paylines, the maximum potential win is a tempting 1,000x per line, or 10,000x the total bet. 

The developer has a reputation for high variance slots, and Double Stacks is no exception. As such, you can expect bigger wins to be relatively infrequent. However, the game’s Return To Player rate is a perfectly reasonable 96.10%.

Although you can enjoy a free demo here on this page, a $0.10 stake is required to play Double Stacks at real money casinos. On the other hand, higher-rolling players will no doubt appreciate the maximum wager size of $200 per spin.

Double stacks Slot Grid Layout and Symbols

Img Description: The BAR symbol appears fully stacked on reel five. Four symbols and their maximum win values are shown above the reels.

Theme & Graphics in Double Stacks

The humble fruit machine is one of the most commonly-replicated online slot themes, and in Double Stacks, NetEnt keeps things classic. The lucky 7, BAR and bell symbols feature heavily, for instance, as the game’s premium symbols. 

In addition, the developer chose to retain the standard fruit lineup, consisting of cherries, plums, lemons and watermelons. The control panel is more prominent than many slots, and the inclusion of a scrolling marquee display further betrays the retro fruit machine inspiration. 

Unlike older slots, however, the graphics are far more vibrant, and during the game, you’ll notice a particularly nice color pop animation. Another twist, which you’ll learn about later in this review, is the Double Stacks feature, for which the game is named.

Finally, the soothing 1980s-style soft rock instrumental which accompanies your play is enjoyable, but it also ties the theme neatly together.

Double Stacks Slot Features

This next section of our Double Stacks review digs deeper into the gameplay elements, symbols and bonus features on offer.

Regular Symbols

There are two broad categories of symbol in Double Stacks. The lower-value icons are watermelons, lemons, plums and cherries, all of which return 5x the line bet for three on a payline. Prizes increase for each additional symbol, rising to 60x for a total of nine.

The game’s premium symbols are fruit machine staples, namely the bell, BAR, lucky 7 and diamond. Bells pay the least, ranging from 5x the line bet for three, to 100x for ten. Next comes the BAR, which returns up to 250x, followed by the 7, worth 500x for ten.

Finally, the diamond pays highest of all, offering the maximum win of 1,000x per line bet.

Double Stacks Feature

All four of the premium symbols can appear stacked on the reels. In other words, the entire reel may contain three of the same symbol.

When this happens, the stacked symbol appears double in each position. So, even though the game features just five reels, it’s possible to drop a maximum of ten premium symbols on each payline. 

Wilds

A star icon is the wild symbol in the Double Stacks slot. It substitutes for all base game symbols, except for the scatter. 

Scatters

The scatter is a purplish orb that can appear on all reels. To help identify it, the word “scatter” is drawn across the front in pink. Landing three, four or five scatters earn you five, 15 and 30 free spins, respectively. 

Free Spins

During the free spins feature, the wild symbol can also appear stacked and occupy a full reel, just like the premium icons. 

In addition, you can retrigger the feature by collecting further scatters. Two, three, four and five scatters triggers an extra two, five, 15 and 30 spins.

Double Stacks Free spins feature

Img Description: Wild symbols appear stacked on reel one. They have substituted for lucky 7 and bell icons to trigger a 110 coin win. 

How to Play Double Stacks Online

Double Stacks is a straightforward game, much like other real money slots with a fruit machine theme. To win, simply land at least three of the same symbol on any of the ten designated paylines.  

Select your desired bet size using the “Coin Value” and “ Level” options beneath the reels. You may also opt for the maximum bet size by clicking “Max Bet” on the control panel.

When you’re ready, tap the round button in the center of the panel, or use “Auto Play” for hands-free spins.

Try the Double Stacks Demo for Free before playing for real money

Before we wrap up this Double Stacks review, a word of caution. Even if a slot appears simple, it’s always a good idea to try a demonstration game before playing for real. 

Luckily, we have just the thing on this page. Our Double Stacks demo is free to play, allowing you to figure out the game’s features, rules and volatility.

Double Stacks Review – Our Final Verdict

There’s not really much you can do with the classic fruit machine. Its enduring popularity lies in its simplicity, and anything which might take away from that could be seen as a negative. Despite this, NetEnt has managed to innovate and improve on the format, without overcomplicating matters.

Upon its release in 2018, there wouldn’t have been many slots around with a mechanic like Double Stacks. And this definitely adds an extra layer to an otherwise standard fruit machine experience. 

What’s more, the 10,000x maximum win per spin is quite big for a slot of this type, especially considering the game’s age. While the RTP of 96.10% is solid, if unspectacular. 

That particular phrase seems fitting to describe Double Stacks as a whole. There’s nothing especially revolutionary going on here. But the developer has put a minor new twist on a classic theme, creating a game that’s both potentially rewarding and entertaining enough.

Similar Slot Games

If you liked the sound of this slot, here are some similar titles worth a try.

  • Stacked Fire 7s: This 5×4 Inspired Gaming slot also features a fruit-themed layout and a stacked symbol mechanic. 
  • Starburst: A NetEnt classic with the traditional BAR and lucky 7 symbols, despite its outer space theme. 
  • Juicy Fruits: An exciting fruit-themed slot from Pragmatic Play with a 5,000x maximum potential win and a 96.51% RTP.

Double Stacks - FAQ

Does Double Stacks have free spins?

It does. Claim five, 15 or 30 free spins by hitting three, four or five scatters.

Where can I play Double Stacks for real money?

Sign up to any of the leading online casinos recommended on our site to play for real.

Can I play Double Stacks free?

Yes! Read our review, then take a shot at the free Double Stacks demo here on this page.

What is the RTP of the Double Stacks slot machine?

The Double Stacks slot RTP is fixed at 96.10%.

Dominic Field
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