Dark ocean waters hide tremendous treasures of sunken vessels, while three beautiful, dangerous sirens patrol nearby in True Lab’s sequel title.


February 10




Siren Symphony is a 5×3, 25-payline video slot that incorporates a maximum win potential of up to x30,000 the bet.




96.13 per cent


Symbols in the game include classic A-J royals offering x0.2, x0.8 and x4 the bet for three, four or five of a kind wins, followed by four mid-pays offering x12 to x30 the bet for five of a kind. Lastly, two high-pays offer x30 and x60 the bet for five of a kind, with two wilds represented by a pirate and skull offering x60 the bet for five of a kind. 

Moving onto special symbols, three wild sirens substitute for all other symbols except scatters and always nudge to a whole reel.

Emerald turns all skull wilds into sticky ones and gives an additional spin for the first skull wild on each reel, while Silver awards from four to 15 bonus fish symbols on the field and a multiplier equal to the number of fish on the same spot. Lastly, Crimson, who bestows the player with a set of keys, to open the treasure chests in the Pick & Click bonus. 

Moreover, a key chest now brings two to four extra keys, while a multiplier chest increases the multiplier of all future bet chests and adds another key. A total of 10 free spins are given in any of the three modes. 


The slot incorporates features such as three free spins options with a Helm of Fortune bonus game and a bonus buy. 


Starting with free spins, three scatters landing on reels one, three and five grant the right to choose one of three options with a total of 10 spins in each. 

Starting with emerald free spins, here, skull wilds become sticky, holding their position on the reels up to the end of the session. The first skull wild on each reel provides an extra spin. 

Meanwhile, in silver free spins, with every spin and after symbols are hit and winnings paid, the siren calls up to 15 bonus fish symbols randomly landing on the reels. Multiple fish landing on the same spot award multiplicative multipliers equal to the number of fish in this position. 

Lastly, with crimson free spins, the key symbols are added to the set of reels. At the end of the round, the Pick & Click bonus game begins, with the number of picks matching the number of keys collected. 

Moreover, players are granted a Helm of Fortune bonus game at the end of any free spins session. Here, players can win a multiplier of their free spins win or even an extra bet prize. 

Moving onto the Crimson Pick & Click feature, one chest always holds a key. Key chests award from two to four extra keys. 

Additionally, one chest always holds a multiplier. Multiplier chests multiply upcoming bet chests by two, and give an extra key. When multiplier chests are opened, all chests are closed and reroll, to be opened again. Lastly, eight chests are always bet chests, awarding a random number of bets multiplied by the current multiplier.

Finally, with the bonus buy option, players can immediately purchase and activate the free spins round at a price that is always equal to 187 bets. 


Igor Samardziski, the CEO of TrueLab, said: “The marine theme is very true to our roots, and Siren Song is one of the most loved games in the TrueLab game portfolio. Siren Symphony, with all the essential improvements concerning new features and graphics, will definitely broaden its dedicated fanbase.”



To play a demo version of Siren Symphony, click here