Free slot: Double Stacks

Double Stacks Slot Overview

Double Stacks provides a retro, fruity slot experience that gives a classic vibe with modern technology.

The game play is smooth, the symbols illuminated neon style, while the audio soundtrack touches on the classics. Are you up for the challenge in a classic slot with extra features? 

Basic Information

Double Stacks was released September 24, 2018 and developed by NetEnt, one of the world's premier providers of quality slot machine games. They create games for all audiences, and this particular one offers a wide betting range and wholesome graphics. 

With a maximum win of 1,000x your stake in a single spin, this slot is reasonable, not extreme, but just enough to cause some anxiety in hardcore punters who yearn for high volatility and fast action.

Theme and Graphics

Double Stacks goes full neon with a fruity slot theme and 80's graphics. This means whether it's cherries or berries, everything is bright and colourful with glistening, glowing lights. Practically, this is a retro slot that is now in high definition.

The game has a bright purple and blue background, and an upbeat audio track that fits the theme. 

The reel area is bordered by glowing frames, and it doesn't matter if you are playing this during the day or late at night, it just makes you feel like you are in a buzzing casino.

RTP and Volatility

Double Stacks slot has an RTP of 96.1%. In the long term, this means that for every €100 that you wager, on average you will get back €96.10 over an extended period of time. This is a fair return for the average slot.

Double Stacks is a high volatility game. These slots pay out wins less frequently, however the wins will be in very high amounts. This means Double Stacks can increase the excitement by awarding less frequent payouts, but a larger payout potential.

Symbols and Paytable

Double Stacks has low-paying, high-paying, and special symbols.

The high-paying symbols include:

• Diamond: 10 = 1000x

• Seven: 10 = 500x

• BAR: 10 = 250x

• Bell: 10 = 100x

The low-paying symbols include;

• Cherries: 9 = 60x

• Berry: 9 = 60x

• Lemon: 9 = 60x

• Watermelon: 9 = 60x

Other special symbols include:

• Golden Star Wild Symbol

• Glowing Globe Scatter Symbol

How to play the slot

To start playing Double Stacks, you need to choose an appropriate amount to wager, between €0.10 and €100.00 per spin. After that, hit the spin button to get the reels moving. 

Land three or more of the same symbol across an active payline, beginning on the leftmost reel, to create a winning combination.

Game Mechanics

The Double Stacks feature introduces a fundamental game mechanic that adds to this game's win potential: Doubling of the symbols. 

When one entire reel contains a full stack of any one of the four highest value symbols, they're basically "doubled" and counted as two symbols in the win calculation. This means the player can achieve bigger payouts thus changing a standard win into something more substantial.

This works hand-in-hand with the Free Spins mode, where the doubling mechanic appears more often and wilds become sticky for bigger payouts.

The base game remains quick and straightforward, but with the doubling twist, there’s always potential for an exciting surprise.

Feature Symbols Explained

The Wilds and the Scatters are the two most important feature symbols in Double Stacks. 

• Wild Symbols: Needed to create winning combinations, substituting for any of the other paying symbols on the reels.

• Scatter Symbols: Needed to get into the bonus round. You just need to land 3 various Scatters in any position on the reels to trigger the Free Spins feature, allowing you to land a win from that bet without placing a bet! 

Both features are simple, yet they tie directly into the slot’s rewarding system, making every spin count.

Double Stacks Features and Bonuses

Double Stacks comes with amazing features and bonuses, namely:

Double Stacks Feature

If a high-paying symbol (Diamonds, Sevens, Bells, and Watermelons) lands fully stacked, the symbols will be doubled immediately.

This means all high-value symbols will count as two of that symbol, creating opportunities for large payouts and easier massive combinations across the whole screen.

Free Spins Features

If you land 3, 4, or 5 Scatters, you will get 5, 15, or 30 free spins respectively. In Free Spins, the Double Stacks feature is active for every spin, and Wilds also land more frequently.

You can also retrigger free spins by landing 2 or more Scatters while in the bonus round, giving you even more opportunities for large wins.

Play Options

This slot gives you double the options for Double Stacks. You can test the waters in demo mode, while still benefiting from all the stacking and doubling fun, but without spending any real money.

Alternatively, you can skip straight to real money mode at any trusted online casino recommended by Lucky7Bonus and play for real cash payouts.

Play for Real Money or Try the Demo

You can play Double Stacks in demo mode, as well as for real money. The demo gives you all the features in a risk-free context, making it a great option for new players, or anyone interested in exploring the game.

Once you are set for some real thrills, simply switch to real mode and chase down the 1,000x max win. In both modes, you can comfortably relax with easy play while spinning, or aim to fill up the entire screen with stacks.

Demo Features and Mobile Compatibility

The demo format of Double Stacks is essentially the same as the real game. You get the same theme, playability, symbols, features, graphics, and flow of gameplay; you just don't get to earn real money.

In terms of technology, Double Stacks is built in HTML5 and is suited for all modern-day technologies. You can play on Android, iOS, or desktop, the experience is crisp and optimised for each device. And there are no downloads whatsoever!

Double Stacks Compared

Double Stacks is different from most other fruit-based slots with a doubling feature and neon-style graphics. It doesn't have the biggest jackpot ever, but it has robust features and comfortable gameplay that makes you want to play again and again.

Compared to other similar fruit-themed slots, Double Stacks offers more variety and pace, though they carry the same general nostalgia.

Similar Slots You Might Like

If you like Double Stacks, you will like the following slots, as they have the same fruit theme as the Double Stacks slot:

• Starburst (NetEnt): Starburst (prequel to Starburst Galaxy and Starburst XXXtreme) is a classic 5-reel, 10-payline video slot featuring beautiful gems and expanding wilds. It is known for low volatility and its frequent small wins. This popular title pays both ways, with a max win of 500x.

• Wild Fruits (Endorphina): Wild Fruits is a traditional fruit machine with a Wild West spin. It has 5-reels and 50-paylines and comes with wilds, scatters, free spins, etc. Its high volatility means players will have fewer wins but much bigger wins - ideal for players who like a bit of risk.

• Fire Joker (Play'n GO): Fire Joker (prequel to Fire Joker Freeze and Fire Joker 100) has a 3x3 grid, and 5 paylines. It's a blend of classic slot nostalgia and a modern multiplier mechanic. Fire Joker has re-spins and a Wheel of Multipliers, which add to the win potential of up to 800x.

Summary & Final Verdict

NetEnt's Double Stacks offers an interesting classic slot experience, successfully mashing the nostalgic feel with creative gameplay. The bright and bold graphics, and retro theme create a fun vibe for players. 

The Double Stacks mechanic essentially doubles the game's symbol value, which is really impressive and enhances the fun and action of the base game.

In addition to this, it's important to note that the rewarding Free Spins round with stacked wilds and an RTP above industry standard promises a great experience if you're a fan of high volatility. 

This is a slot you have to try, because it offers you what you're looking for, and a bit more!