Mysterious is visually very well done, and Pragmatic Play has managed to create an eerie atmosphere in the Victorian era that will captivate you from the very beginning. The game revolves around 3 creepy characters, one portrait of each of which is lined up on the left side of the reels. You spin the reels in 3 different modes, one for each of the 3 characters.

These characters are The Lord, The Lady and The Baron, and the wild features of the base game depend on which character is active. The game is played in a 4×4 grid with 256 paylines, and you can place bets between 10 pence and £100 per spin on all platforms and devices. The RTP is a decent 96.5%, and this is a very volatile game by any standards.

The main attraction here is the 2 different free spins features, and you can control your destiny every time you trigger the bonus round. The reel set expands during the bonus rounds, and you will benefit from either roaming wilds or multipliers up to 12x, depending on which of the two features you choose.

What are the symbols?

All of the higher paying symbols are animal faces, with the exception of the highest paying symbol of all, the game’s logo. You also have the regular royal symbols with low value, and here we present you the paytable for the mysterious slot:

• Game logo – Pays 25x for 6 on a payline.
• Lion – Pays 10x for 6 on a payline
• Owl – Pays 6x for 6 on a payline
• Ram – Pays 5x for 6 on a payline
• Bull – Pays 3x for 6 on a payline
• Royal Symbols – Pays between 2.5x and 2x for 5 on a payline

What are the bonus features?

On the right side of the reels you will see the 3 different characters of the game. The highlighted character indicates which game mode you are playing in. There is a wild modifier bonus feature that can be triggered at random times during the game The base game and how it plays depends on the active game mode. Here’s what you can expect from each of the characters:

• The Lord Wilds: Displays a multiplier value of either 2x or 3x, and the wilds can multiply together.
• The Lady Wilds: Expands to reveal mystery symbols and potentially create more winning combinations after the initial win is calculated.
• The Baron Wilds: Turns nearby symbols into wilds.

Free Spins in Mysterious

There are 2 free spins bonus rounds that you can trigger here, and you need to land at least 3 scatters on the same spin to do so. The reel setup changes now and the free spins are played on 6 reels and 4,096 paylines. In both bonus rounds, you get 8 or 12 free spins if you land 3 or 4 scatters, and you can choose which feature you want. They play out as follows:

• Locking Multiplier Free Spins – A clock symbol gives you random multiplier values of 3x, 6x, 9x or 12x. If you land 2 clock symbols, you will get 2 additional spins to your total when the multipliers are frozen.
• Revival of Roaming Wilds Free Spins – Wild symbols disappear after each spin and float on the reels like ghosts. When you land a new wild, these floating / roaming wilds become active in random positions.

What is the jackpot (maximum win)?

You won’t find any kind of jackpot on Mysterious slot, but you can still win very decent payouts here. The maximum win of the game is 9,648 times your bet, which is solid even for a very volatile game. Play with the highest possible bet of €100 and you can pocket up to €964,800 on a single spin here. If you want to win big, it’s best to choose the free spins feature with up to 12x lock multipliers.

Pros

3 different wild spins features
2 free spins with extras
High volatility and 9,648x maximum win potential

Cons

No bonus game or jackpot