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Mysterious Slot - Review, Free & Demo Play

Mysterious
Mysterious
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Updated: 22.07.2025
Reviewed by: Ella Houghton

Mysterious is a slot created by Pragmatic Play and released on 20/02/2020. If you love scary stories and dream of hunting ghosts, then this title is made especially for you. On this page, we have posted a detailed report that will help you safely navigate through all the traps on the way to solving the mystery of the slot and big winnings.

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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 Mysterious slot

General information about Mysterious slot

Rating by Ella Houghton:
8.4
Pragmatic Play
Write a review +25 SJ points
  • Release Date:
    20.02.2020
  • Volatility:
    High
  • RTP:
    96.5%
  • Multiplier:
    Yes
  • Max. win:
    9,648x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    4,096
  • Slot reels:
    4
  • Layout:
    6-4
  • Stakes range (€/£/$):
    0.1 to 100
  • Slot Theme:
    Horror, ghosts
  • Technology:
    HTML5
More infoLess info

Licensed and tested by

  • GA (Gaming accotiates)
  • Gambling Comission
  • Gaming Board For The Bahamas
  • GLI (Gaming Labs Certified)
  • HM Goverment of Gibraltar
  • ONJN

How to Play

To start playing Mysterious, do the following:

  1. Open the slot
  2. Click on paytable
  3. Read the rules
  4. Bet from €0.1 to €100
  5. Spin the reels

The title has from 256 to 4,096 pay lines. The maximum number of ways to win is activated during the bonus round. The slot also has a standard 4x4 playing field, but after the free spins are launched, it expands to 6 reels. The game has a set of 9 symbols suitable for making combinations.

In addition, during the course of the game, three separate features of the Wilds may be activated randomly. Moreover, the slot has free spins containing a number of bonus features that increase the chances of winning.

Mysterious RTP and Volatility

9 

The RTP of the slot is 96.5%, while the volatility is very high.

The return percentage is a theoretical number that indicates the amount of bets to be returned to the user's balance after they finish the game. You should not think that the game will definitely return 96.5% of the money spent on it because the slot has a random number generator. Thanks to it, you can get much more without relying on RTP.

Volatility is an indicator that is responsible for the amount of prizes in the slot. If it is very high, you can hope for relatively large winnings, which, however, will appear quite rarely in the title.

Theme

10 

The title has a rather interesting and high-quality graphic design that perfectly conveys the spirit and theme of the slot. In the background, you can see a city plunged into twilight, dominated by a mysterious haunted mansion. Lightning flashes in the sky and the streets are shrouded in an ominous haze. It seems that from behind any corner a monster can appear here, causing mortal horror.

The soundtrack of the slot is made in a majestic style. The melody carries the tension of the ghost hunt that takes place during the spins of the reels. The set of sounds is completely original, even the classic victorious fanfare sounds very fresh here.

The symbols of the title are four card suits, as well as images of the Bull, Buffalo, Eagle, and Lion, stylized as locks, unlocking some mysterious gates. The most valuable symbol of the game is its logo on a blue background. There are also 3 portrait images of ghosts – Lord, Lady, and Baron. They are Wilds during the base round.

In addition to them, the title has a bonus symbol. It is made in the form of a sign decorated with intricate drawings. The image of a clock stopped at midnight plays the role of a special multiplier symbol here.

Theme

Mysterious slot paytable

Mobile Compatibility

Mysterious slot mobile

The slot can be launched in a mobile version, which loads perfectly quickly on any smartphone or tablet. The game supports any modern operating system for portable devices. You can comfortably control the gameplay with your fingers.

About Pragmatic Play

Pragmatic Play is a provider that has managed to create slots that have become truly legendary. Among them are Crown of Fire, Wild Hop&Drop, and Aztec Blaze. The company focuses on bonus rounds, supplying its products with many ways to win. Also, the provider often makes remakes of classic titles.

Bonus Rounds & Free Spins

7.5 

Random Features

Immediately after loading the game, 1 of the 3 features of the Wilds is activated. Their role is played by 3 characters – Lord, Lady, and Baron. Each of them provides a certain advantage.

  • The Lord adds a 2x or 3x bet multiplier to any win it participates in
  • The Lady can spread to a whole reel
  • The Baron infects adjacent symbols, turning them into itself

All of these features are activated during the base game.

Mysterious slot Random Features Lord multiplier

Free Spins

If 3 or 4 bonus symbols appear on the screen, you will get 8 or 12 free spins. The playing field will immediately increase to 6 reels, and 4,096 ways to win will also become active. Before the start of the round, you need to choose one of two options.

  • Locking Multiplier that gives multipliers from 3x to 12x bet
  • Roaming Wilds will move randomly between reels

It is worth noting that these bonuses can only be triggered during the bonus round.

Mysterious Demo Play

The slot has a demo version, which is suitable for training beginners or developing game tactics. We have put the free game on this page so you can use it whenever you want. The demo does not allow you to earn real payouts, however, it gives a clear idea of the content of the slot.

Max Win

7 

Maximum win – 9,648x the bet.

Needless to say, the game offers decent winnings along with its main task is to entertain users. To get bigger prizes, here you can just hope for luck because randomly appearing Wilds in the base game can bring good payouts. Free spins also have great potential.

Overall Rating

8.4

Mysterious is an exciting slot with an unusual theme that invites you to become a real ghost hunter. The game has a lot of bonuses, which undoubtedly increases the chances of getting good prizes. At the same time, there is too high volatility, which makes a long-term game quite expensive.

Hits
Free spins
Base game features
Multiplier feature
Misses
Very high volatility

Mysterious Slot - FAQ

What is the most valuable symbol in Mysterious?

It’s the game logo.

What is the Return to Player (RTP) rate of Mysterious?

The RTP of the game is 96.5%.

Can I earn real cash prizes in the Mysterious slot?

Yes, you can earn cash prizes in the paid version of the game.

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2128 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks
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