Double Stacks

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Reviewed by: Isabelle Lort Twitter
Last updated: 05/09/2022
One of New Zealand's prides among the casino world's game providers is Netent, for several reasons. One of these is that they have proven several times that they can take the most classic mechanics of a slot machine, and turn it into something you have not seen online before. In others video slots from Netent we have seen completely new technology such as winning patterns, enlarged symbols and symbols moving around on the screen. On september 24, 2018, another new video slot called Double Stacks was launched, which at first glance looks like any modern slot game, but has several interesting bonus features to look forward to!

About the slot machine

Double Stacks consist quite classically of 5 spinning reels, 3 paylines and 10 fixed paylines like his entire playing field. Despite that, it is a pretty special video slot that gives chance on not only freespins - rounds that can double one's possibilities with Wilds and brilliant graphics. In one of the features of Double Stacks, you can double your symbols on an entire reel covered by stacked symbols, which can result in a win significantly larger than a regular winning combination.

The graphics are as traditional as it can only get in the way of both colorful symbols consisting of cherries, diamonds and plums. On the other hand, we are talking about a real boost with symbols that are pushed out of the playing field in the event of a larger win. The sounds featured in Double Stacks are also something that contributes to a more futuristic feel than the more typical slot machine that rattles when winning.

The theoretical payout percentage of the game is 96.10% which may not say much. Therefore, we would like to add that Double Stacks is classified as a slot machine with medium volatility . This means that it is relatively generous with winnings, although there may be situations where you spin and spin without anything happening, before you are surprised by a bigger win like a bolt from the blue.

Our Rating
Bonuses
84%
Graphics
86%
Entertainment
81%
Game information
Games 2018
Max profit 200 000kr
Reels / paylines 5 / 3
Theoretical payback-RTP 96.10
Coin value 0.10$ – 20$
Total effort 1$ – 2 000$
Volatility Media
Free spins Yes
Bonus features Double Stacks, Free Spins

Functions

In addition to the graphics and sounds that make NetEnt's Double Stacks slot special, it is the bonus features that even the title of the game hints at that make the new slot unique. Double Stacks means double stacks, which is undoubtedly the main feature of the game that attracts players.

Double Stacks features

The game's main bonus feature can stack a single symbol along an entire reel, thus excluding any symbols other than the one chosen at random. This only applies to the 4 strongest symbols in the game. Not only is an entire wheel covered by a single symbol, here the value of the symbols is doubled and they count as two symbols for your spin that results in profit. Which symbols this applies to is shown a little further down in this review. In short, it can at best result in a win of up to 10 symbols on any of the active paylines. It will also be clearly displayed when you have symbols that are double counted when they appear as two compressed symbols in one and the same field.

Free spins

In a very positive way, the free spins round also works slightly differently compared to most online video slots. During the entire time that the free spins bonus round is activated, stacked Wilds are added to the playing field . Wild can usually contribute crazy winning combinations as it can replace the other symbols and its values, so this is clearly a feature you want to achieve in Double Stacks.

Otherwise, free spins are triggered by the Scatter symbol, which is clearly visible by being marked with its title across the round symbol. Spin 3 of this or more in the game's regular game round, and you spin a bunch of rounds for free. Depending on how many of this bonus symbol you manage to get, you will also be rewarded with different number of free spins up to 30 PCs!

  • 3 Scatters = 5 free spins
  • 4 Scatters = 15 free spins
  • 5 Scatters = 30 Free spins

Trigger about freespins

It becomes even more charming when you discover that the free spins feature can be triggered more than once once you are in the bonus round. 2 or more scatter symbols can appear when spinning with their free spins, and depending on how many Scatters land on the playing field, you are rewarded with a different number of free spins.

  • 2 Scatters = 2 free spins
  • 3 Scatters = 5 free spins
  • 4 Scatters = 15 free spins

5 Scatters = 30 free spins-so there can be a lot of Free Spins!

netent double stacks

Symbols

As in most slot games, there are symbols that mean more than others in NetEnt's Double Stacks. Slot machines standard symbols consist of plums, lemons, cherries and melon halves . These symbols all have the same value. After that, the symbols climb in value, they can be doubled and counted as two symbols at a time on the Reels, plus they can be doubled as stacked symbols:

The bell is the lowest paying symbol of the stronger symbols in Double Stacks and can generate 100 coins at most on a Payline. Close behind, comes the BAR symbol which can similarly generate 250 coins when combining 10 pieces. The game's 7a is the second strongest of all the symbols and can give away a win of 500 coins, and diamonds are worth the most with a maximum coin win of 1,000 coins.

Summary

We have no doubt that Double Stacks will be a video slot at least as popular as, for example Starburst or Twin Spin from NetEnt. The reason is that the theme is recognizable for decades, as well as the symbols and the mechanics of the slot. The fact that it is also considered a medium volatile slot means that all types of slot fans will be entertained by Double Stacks, compared to other games that you may have to spin a ridiculous number of times before it brings a profit. In short, Netent shows once again how to make a classic video slot with 5 reels and 3 rows really exciting and unique.

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Garen has been writing casino reviews for many years. She is meticulous and detail-oriented. Among her favorites we find, among others online casino games with great game selection, casino bonuses with fair conditions and responsible gaming.