Mysterious Slot Review
Three portraits hang above a fog-choked Victorian street – a top-hatted gentleman glowing blue, a young woman and a second whiskered man still greyed out, waiting to wake. That trio is the whole reason to be here: Pragmatic Play have made a slot whose base game has no other idea, and it’s better for it, because each portrait is a wild that plays completely differently from the other two.
Mysterious runs a 4×4 grid with 256 ways to win, 96.5% RTP, medium volatility and a 9,648x ceiling, with reels that stretch to six across for the free spins. Gothic horror is well-trodden ground – Curse of the Werewolf Megaways and Vampires vs Wolves both live in it – but the portrait framing gives this one a flavour of its own. The manor keeps its secrets close. Let’s find out what’s behind the door.
Base Game & Features
Wins pay left to right on adjacent reels from the leftmost reel, across 256 ways in the base game. The square 4×4 grid gives the reels an unusual, almost window-like shape inside the ornate carved frame. Stakes run from 0.10 to 250.00 per spin, and every win is a multiple of the base bet.
The paytable runs from a gilded crest down through a lion head, a wolf head and a ram head to a bull, with the four card suits at the bottom. Values are in coins, for matching symbols on adjacent reels:
- Mysterious crest, three to six symbols: 4.50 / 9.00 / 18.00 / 45.00 Orange and gold lion head, three to six: 1.80 / 4.50 / 9.00 / 18.00 Silver wolf head, three to six: 1.80 / 3.60 / 7.20 / 10.80 Brown ram head, three to six: 1.80 / 2.70 / 5.40 / 9.00 Purple bull head, three to six: 0.90 / 1.80 / 3.60 / 5.40 Spade and heart, four to six: 0.90 / 2.70 / 4.50 Club and diamond, four to six: 0.90 / 1.80 / 3.60
Random Spin Features
On any spin in the base game, one of three modes can activate at random, and each one belongs to a portrait. All three wilds substitute for every symbol except the Free Spins symbol and the other specials. All three appear only on reels two, three and four.
- The Lord: reveals a random 2x or 3x multiplier on wins he forms part of, and multiple Lords multiply one another The Lady: after paying any wins she joins, may expand into a mystery stacked symbol that creates new winning combinations The Baron: infects adjacent symbols vertically, turning them into wilds
The Lord is the multiplier man. Two of him in the same win can turn a modest line into something much bigger, since his multipliers stack on top of one another rather than being counted once.
The Lady works after the fact. A single expansion can fill a reel with one mystery symbol and build a combination the original spin never promised. She’s the quietest of the three, and occasionally the most generous.
The Baron is the infection. His wild spreads to the symbols directly above and below him, and on a grid only four symbols tall that reach covers most of a reel in one move.
The Free Spins symbol is a scatter and pays no prize of its own. Three or more anywhere on the reels trigger the feature, and during the round it sits on reels two to five only.
Between the random features, the base game moves at a steady pace for a medium-volatility title. Wins range from low to very high, which is the profile the volatility rating promises.
The three portrait modes mean a spin is never entirely out of play, since any of them can arrive on any base spin and each changes the board differently. Autoplay handles the waiting if you’d rather watch the street than press the button.
Mysterious Free Spins & Bonus Features
The scatter count decides what you start with, and the round then changes shape entirely:
- Three Free Spins symbols: eight free spins Four Free Spins symbols: twelve free spins Grid: expands to four symbols across six reels during the round Ways: climb from 256 to 4,096
Before a single free spin plays out, there’s a choice to make, and it’s a real one:
- Locking Multiplier Free Spins: clock symbols carry multipliers up to 12x, and pairs of them lock the multiplier in for extra spins Resurrecting Roaming Wilds Free Spins: wilds fade away after each spin and drift back onto the reels at random as more of them land
Locking Multiplier Free Spins
This option runs on the clock. Each one that lands applies a random boost to everything that spin pays, and the possible values are:
- 3x applied to the total win of the spin 6x applied to the total win of the spin 9x applied to the total win of the spin 12x applied to the total win of the spin
Clocks appear only on reels one and six, which keeps them rare enough to matter. Land two on the same spin and you get three additional free spins played immediately, with the multiplier locked in place for them. Chaining those retriggers is where the big rounds live: a locked 12x across a stretch of expanded-reel spins can climb quickly.
Resurrecting Roaming Wilds Free Spins
The second option is wilder in spirit. Any wild that hits fades away at the end of its spin and roams the reels, and it can return on reels two, three, four or five at the end of any free spin, in a random position, whenever more wilds land on screen.
The round builds a ghost population of wilds that drift back into play, and a long feature can have several circulating at once. It’s the choice for anyone who prefers accumulation to spikes.
Free spins wins are added to any pay-way win from the triggering spin, and the round’s total is paid once it completes. The two options genuinely play differently, which is more than most pick-a-bonus rounds manage.
Our Honest Verdict
Overall Rating: 7.9/10
You come to this house for its residents. Every session lives or dies on which portrait wakes up next: the Lord quietly multiplying a win, the Baron swallowing half a reel, and the anticipation of that is what makes pressing the button in the base game worth doing at all.
The free spins choice is the best thing here, because it’s honest – two genuinely different rounds rather than one with two labels, and the decision you make at the door actually shapes what follows. The weakness is the ordinary paytable underneath it all, thin below the crest, so the portraits are doing all the entertaining on a lot of spins.
This is one for players who like a base game that keeps surprising them and don’t need brutal volatility to stay interested. If you want a slot that pays hard and punishes harder, the manor will feel too polite. For everyone else, the lights are on and the residents are home.
Mysterious FAQs
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What is the RTP of Mysterious?
96.5%. -
Is Mysterious high volatility?
No. Mysterious is a medium volatility game, so payouts range from low to very high and arrive at a steadier rhythm than a high volatility title. -
How do you trigger free spins in Mysterious?
Land three or more Free Spins scatter symbols anywhere on the reels. Three scatters award eight free spins and four award twelve, after which you choose between the Locking Multiplier and Resurrecting Roaming Wilds options. -
What do the Lord, Lady and Baron wilds do in Mysterious?
Each is a wild that appears only on reels two, three and four in the base game. The Lord reveals a 2x or 3x multiplier on wins he joins, the Lady expands into a mystery stacked symbol after paying, and the Baron turns the symbols directly above and below him into wilds. -
How does the Locking Multiplier free spins option work?
Clock symbols land only on reels one and six. Each one boosts the spin’s entire win by a random multiplier of 3x, 6x, 9x or 12x, and two of them together award three extra free spins played straight away with the multiplier held in place. -
What is the maximum win on Mysterious?
9,648x your bet. -
What is the minimum and maximum bet on Mysterious?
Bets run from 0.10 up to 250.00 per spin. -
Who makes Mysterious?
Pragmatic Play.


