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Dark Vortex Slot - Review, Free & Demo Play

Dark Vortex
Dark Vortex
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Updated: 22.07.2025
Reviewed by: Fabio Duarte

Yggdrasil brought the world of demons and monsters to the slots with Dark Vortex, released on 24/10/2018. With its free spins, expanding reels, and buy bonus option, this slot is sure to bring you plenty of fun.

In today's review, we will analyze the functions present in Dark Vortex and we will also bring you options for casinos where you can play for real money.

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Dark Vortex slot

General information about Dark Vortex slot

Rating by Fabio Duarte:
8.1
Yggdrasil
Write a review +25 SJ points
  • Release Date:
    24.10.2018
  • Volatility:
    Low
  • RTP:
    96.5%
  • Multiplier:
    No
  • Max. win:
    7,318x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    Yes
  • Jackpot Game:
    No
  • Slot lines:
    3,125
  • Slot reels:
    5
  • Layout:
    5-5
  • Stakes range (€/£/$):
    0.10 to 50
  • Slot Theme:
    Gothic
  • Technology:
    JS, HTML5
More infoLess info

Licensed and tested by

  • Gambling Comission
  • MGA

How to Play

You don't need much to venture into the Dark Vortex. In fact, just follow a few simple steps to start playing.

  1. Wait for the small intro video to finish
  2. Click anywhere on the screen to open the reels
  3. Adjust your bet using the “+” and “-” symbols or just clicking on the “max bet” option if you want to make the highest bet possible
  4. Start spinning the reels by clicking on the purple button with a circular arrow

With a 5x3 layout, Dark Vortex initially offers 243 paylines. The number of paylines, however, can increase to up to 3,125 with the expanding reels feature during vortex spins. Winnings are counted both from left to right, which is traditional, and from right to left, offering more chances of winning. The minimum bet, using a coin value of 0.01, is €0.10, while the maximum bet is €50, using a coin value of 5.00.

Dark Vortex RTP and Volatility

8.5 
Players can get high winnings with this slot due to its 96.5% RTP and low volatility.
When we talk about the return that the player has when playing Dark Vortex, we find a very satisfactory value, since the RTP is 96.5%. On the other hand, due to its low volatility, the wins can be small but happen frequently.

Theme

9 

Dark Vortex is a horror slot and you will be able to see this mainly in the creepy background music and also in the monster symbols and monstrous books that are part of the game.

The reels are highly themed, surrounded by candles and gargoyles. In addition, a mysterious fog wanders through the background image, giving a greater air of suspense. The graphics are very good and the sound is really impressive, showing that it is a high quality slot.

All symbols present in Dark Vortex are fully stylized within the theme.

The symbols that offer the smallest wins are the monster books, which pay depending on the symbol and combination. The more valuable are the monster symbols. The most valuable symbol you find in Dark Vortex is the red female demon.

In addition to these, on normal spins, there is also the vortex symbol, which activates the game's special feature when two or more symbols land on adjacent reels.

In this feature, there is the addition of 2 new symbols: the blue orb, which gives free spins, and the pink orb, which increases the number of Wilds. To top it off, there is also the Wild symbol, which appears only in free spins.

Theme
Dark vortex slot paytable

Mobile Compatibility

Dark vortex slot mobile
Dark Vortex offers a great mobile experience that can be enjoyed on both iOS and Android devices. With more practical gameplay as you can play with a touch of a finger, this horror slot has been fully optimized for the small screen. Thanks to this, players can take Dark Vortex with them anywhere and play at any time of the day.

About Yggdrasil

Founded in 2013, Yggdrasil is a Polish casino software developer that usually attracts a lot of attention from players due to the great quality of its slots. According to the company itself, they breathe innovation and, therefore, have already won several awards in the casino industry, such as RNG Casino Provider of the Year in 2022.

In addition to Dark Vortex, Yggdrasil has already produced several other high-quality slots, such as:

  • Dungeon Tower MultiMax
  • Zombie aPOPalypse
  • Champion of the Underworld

Bonus Rounds & Free Spins

8.3 

Vortex Spins

During normal spins, it is possible to activate Vortex Spins when two or more vortex symbols appear on adjacent reels. You get 3 spins when combining 2 vortex symbols and +2 spins for each additional symbol.

During this feature, the reels expand, forming 5 lines instead of 3. In addition, there is also the addition of blue and pink orb symbols that can be collected to increase the winnings on free spins that can be activated at the end of Vortex Spins.

Free Spins

If you manage to activate Vortex on all 5 existing reels, you will activate the free spins function. Initially, you have a total of 5 free spins, however, by collecting blue orbs during vortex spins, you can increase this number up to 10 free spins.

During free spins, there is also the addition of Wilds on reels 2, 3, and 4. Initially, there are 2 lines of Wilds, however, you can increase the number of Wilds by collecting pink orbs during vortex spins.
Dark vortex slot Free Spins

Buy Bonus

For 80x the bet, you can buy the Dark Vortex bonus game, thus creating a good chance of winning. The first step in it is to choose a card to determine the number of Wilds and another to determine the number of bonus spins.

It will then open a 5x5 layout which reels will rotate according to the number of free spins you've gotten on the cards. At the end of the bonus game, all your winnings will be added to your balance.

It is important to point out that the buy bonus options is available for small wagers, so if you want to bet more than €10 this feature won’t be available for you.

Dark Vortex Demo Play

If you've always dreamed of having fun playing an online slot but don't want to risk your money, you'll be happy to know that Dark Vortex has a demo version that's completely free. Just open the game, which is available here in this review, and play, no need to put in real money.

This demo version is also a good option for those who want to test the slot before betting for real money, so you can get to know its extra features and play already knowing what to expect from Dark Vortex.

Max Win

6.7 
This game offers a max win of 7,318x your stake.
With up to 3,125 paylines available during free spins, an interesting max payout in Dark Vortex was to be expected. If the player is lucky, they can win up to 7,318x your initial bet, making a good profit at the end of their spins.

Overall Rating

8.1
Yggdrasil has really brought out a high-quality horror slot with very interesting winnings with Dark Vortex. In addition to the features you find in normal spins, such as expanding reels and free spins, there is also the possibility of a buy bonus that can give you super big wins thanks to the high volatility of this slot.
Hits
Free spins
Buy bonus option
Expanding reels
Misses
High volatility

Dark Vortex Slot - FAQ

Is it possible to play Dark Vortex without using real money?

Yes, you can play Dark Vortex for free with the demo version of the game.

Can I play Dark Vortex on my smartphone?

Yes, Dark Vortex is available for Android and iOS mobile devices, so you can play on your smartphone anytime you want.

What is the maximum win in Dark Vortex?

The max win is 7,318x your initial stake.

How much is the buy bonus in Dark Vortex?

The buy bonus costs 80x the bet.

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Fabio Duarte
Fabio Duarte
Expert in: News, Blog, Slot reviews, Payments
Fabio is a young writer with +6 years of experience in gambling & betting. Fabio creates professional reviews of casino and slots. Every single article Fabio made exhibits deep analytical skill and comprehensive coverage of a topic. It’s Fabio – one of the leading authors on slotsjudge.com.

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