Double Stacks

Is it possible to have double the pleasure with double the stacks? This is not the case with this rather ordinary fruit machine-style slot machine with a unique twist.
Double Stacks - NetEnt -

Double Stacks – Is it possible to have double the pleasure with double the stacks? This is not the case with this rather ordinary fruit machine-style slot machine with a unique twist.

Double Stacks RTP 96.1%

Slot functionSlot description
Slot Provider:NetEnt
Slot date created:September 2018
Features:Free spins, Autoplay, Quickspin feature
Double Stacks themes:
Available on:Mobile, Desktop
Win lines:10

Review of the Double Stacks

Theme and plot of the story

Double Stacks bears the appearance of a vintage one-armed bandit. The standard fruit machine symbols, such as diamonds, bars, sevens, bells, and so on, are all present and accounted for.

The difference between Double Stacks and many other slot machines that employ this theme is that, although many of them are designed to seem like old-fashioned one-winline machines, Double Stacks has a variety of gameplay twists and bonuses (see below for details).

A game that has used a well-worn subject for its design doesn’t do much to distinguish itself from the competition.

Graphics, sounds, and animations are all included.

The symbols are quite uninteresting, even though they are well-designed, and they offer nothing to entice the user to play. Nonetheless, the jazzy backdrop against which they are set is rather elegant, and the animations themselves are done with great flair and have an appealing 3D gloss to them.


Double Stacks is a ten-payline slot machine that is played on a five-by-three grid with three reels and 10 paylines.

The Double Stack feature, which appears in the game’s title, is the most significant gameplay change, as it causes the four highest paying symbols to appear stacked in the main game. When you land many stacks of the same symbol, you have a better chance of making massive combo winnings. If you can cover the full screen with diamond symbols, you will get the greatest prize.

When you fill a reel with one symbol, that symbol transforms into a double stack symbol, which counts as two symbols for the purpose of calculating wins. The double stack is activated when you fill a reel with two symbols.

The maximum prizes for certain winning combinations are shown across the top of the screen in bold type.

Wilds, bonuses, and free spins are all included in this game.

The Wild symbol (the star with the word Wild printed on it) may be substituted for any other sign with the exception of the Scatter symbol.

In the event that you land three or more scatter symbols, the Free Spins bonus is activated. If you hit three Scatters you get five free spins, or four Scatters you get fifteen and five Scatters grant you thirty spins.

Retrigger spins are triggered by landing two or more Scatter symbols, with two Scatters awarding you two more respins.

During Free Spins, Wilds may come in a variety of configurations.

Bet sizes, return on investment (RTI), and variance

The percentage of money returned to the player is 96.10 percent. This is neither excellent nor bad, but it is more or less in line with what we would anticipate from the industry as a whole.

When we evaluated the site, we were able to place a variety of bets per spin ranging from £/$/€0.10 up to £/$/€200.00. That is a reasonable spread that will appeal to players with a variety of bankroll amounts.

Double Stacks has its volatility rated as medium by various online sources. We like high-volatility games since they are more consistent with our chosen strategy.


This online slot from NetEnt is a classic fruit machine with a modern spin on the classic fruit machine.

Double Stacks is unlikely to stand out on its own, but the normal return to player and medium volatility, neither of which are attractive enough to entice us to play, put an end to any hopes of making a recommendation for the game in question.