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We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Design and theme
96 %
Features and playability
93 %
RTP and volatility
95.97 %
Slot machine details and review Siren’s Calling
Get ready, because Iβm taking you on a magical voyage into a world ruled by sea sirens, pearls and treasures hidden deep beneath the oceanβs surface. Sirenβs Calling from Kajot isnβt just another ordinary slot β here, Kajot has managed to combine modern features with stunning graphics and great gameplay. If you love adventure, a fairytale atmosphere and real tension with every spin, this one will hook you. Sirenβs Calling is played on a 5Γ4 grid with 20 paylines.
Every slot machine must be developed by a company that invented, designed and put it into operation. Many players eventually find that they only enjoy playing on machines from specific software provider, so they narrow down their selection by preferred brand.
A slot machine with low to medium volatility.Wins are fairly frequent and sometimes even a higher win. The game has a more balanced course without major fluctuations, suitable for players who want more frequent wins but also the chance to win more. More about volatility here.
Slot theme and symbols
Sirenβs Calling offers a really well-balanced mix of what we like about Kajot β simple controls, but with enough features to keep you entertained even after hours of play. The gentle sea-themed soundtrack slowly draws you into a mysterious underwater world. The effects are subtle, yet nicely suspenseful. The visuals come with beautiful colours, smooth animations, and details that donβt get old. This is a slot you can genuinely sink into and unwind with. Even after a longer session, the setting wonβt feel tiring. And what would an underwater slot be without great symbols? Here, Kajot has really dipped into its graphic treasure chest. The low-value symbols are the card ranks 10, J, Q, K, A β naturally in an elegant ocean-inspired design. The high-value symbols include a shipβs wheel, a sabre, a compass, a necklace, and a rather creepy fish. And trust us, Sirenβs Calling is definitely not a dull classic with no surprises. Quite the opposite! Kajot has added several features that boost your chances of winning and, most importantly, keep the tension high. The siren as a WILD substitutes for all standard symbols. Itβll often help complete combinations where youβd otherwise be one symbol short of a win. Meanwhile, the bonus symbol triggers the Mystery Bonus! And as if that wasnβt enough, youβll also have access to the WILD spin Feature bonus function. It sounds a bit complicated, but once you get used to it, youβll be glad itβs there! Now for a few numbers. The RTP (return to player) is around 96% and the volatility is low to medium. What does that mean for you? Wins wonβt land on every spin, but when they do, they tend to be pretty decent β especially during the Mystery surprise or when the bonus feature hits!
Theme and symbols Sirenβs Calling
Fish
Skull necklace
Cutlass
Compass
Shipβs wheel
Letter A
Letter K
Letter Q
Letter J
Ten
Nine
Special Symbols and Slot Features
3D
NO
Autoplay
YES
Free Spins
YES
Gamble Feature
NO
Locking Symbols
NO
Wild Symbol
YES
Win Multiplier
YES
Other features
Bonus Game
Other Features
Pirate symbol
If you manage to land 3, 4 or 5 Pirate symbols anywhere on the reels, youβll trigger the Mystery Bonus. During it, youβll see three treasure chests on the game screen. You have to choose one of them. But choose carefully, because you could miss out on a pretty sizeable fortune!
WILD
In a slot full of pirates and sirens, a WILD symbol featuring the Pirate Girl simply canβt be missing. The WILD symbol can substitute for all regular symbols except bonus symbols. However, you can only land it on reels 2, 3 and 4!
WILD spin Feature
During standard play, spins are grouped into sets of 10. Before the first spin, each of the 20 positions is unmarked. A position is only marked once a Siren symbol appears. The position then stays marked for the duration of that 10-spin set. Whatβs great is that each marked spot gets its own multiplier. It starts at x1, but if another Siren lands on the same spot, it doubles. After the tenth spin, the reels stop and the marked positions turn into WILD symbols with a multiplier. These multipliers also multiply together if they land on the same payline. It can also happen that a WILD covers a Pirate symbol. In that case, all marked positions are deactivated and the bonus round starts again from the beginning.
Prize table
Symbol
Multiplier
3x in payline
4x in payline
5x in payline
Pirate symbol
100x
200x
250x
WILD
1x
2,5x
10x
Fish
1x
2,5x
10x
Skull necklace
0,5x
2x
5x
Cutlass
0,5x
2x
5x
Compass
0,5x
1,5x
3x
Shipβs wheel
0,5x
1,5x
3x
Letter A
0,25x
1x
2x
Letter K
0,25x
1x
2x
Letter Q
0,25x
1x
2x
Letter J
0,25x
0,5x
1x
Ten
0,25x
0,5x
1x
Nine
0,25x
0,5x
1x
Our rating of the game
Siren’s Calling
Sirenβs Calling is one of Kajotβs most successful slots if you like classic gameplay with modern bonus elements. The atmosphere pulls you in, the special features keep the suspense going, and thanks to WILD symbols and the Mystery symbols with chests, youβve always got a chance at a proper hit. So, what do you say? Will you dive into the depths in search of the sirensβ treasure?
86%
Editor's rating
Design and theme
87 %
87 %
Features and playability
74 %
74 %
RTP and volatility
96 %
96 %
How do we rate slot machines?
We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Key bonus feature WILD spin Feature with strong winning potential
Bonus symbols trigger the Mystery Bonus and deliver wins even off the paylines
Solid RTP ensures a fair return for players
Youβll quickly understand the game even without studying anything complicated
Multipliers are available during the bonus round
The game runs smoothly and doesnβt drag with unnecessary animations
Cons
Fewer paylines compared to some modern slots
No gamble feature to risk and multiply winnings
No progressive or fixed jackpot
Without bonuses outside the bonus feature, the game can start to feel repetitive
Not everyone will enjoy the occasional dry spells between bigger wins
Manufacturer Kajot
The Kajot brand is one of the most famous names in the gambling world. It has certainly earned the attention of its fans deservedly with all that it has successfully accomplished in this industry. It is a company from the Czech Republic, Czech players know its slots from online casinos and brick-and-mortar gambling halls.
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Software provider
Game typeSlot
Reels
Winning paylines20 paylines
