The Silent Hunter Spins are triggered by landing 3 scatter symbols anywhere on the reels in the base game and awards eight Silent Hunter Freee Spins.
During this bonus round reel, 3 (the periscope reel) grows to be 8 rows high in size, increasing the number of winning ways, not forgetting the extra features that can increase this further!
A torpedo launch sequence is initiated when winning symbols land on reels 1 and 2 with a Periscope Wild on reel 3.
Landing the Periscope Wild on reel 3 initiates a small fight cutscene. If you manage to sink the target ship, you are rewarded with a Periscope Wild that fills the third reel to the top and nudges down to the bottom, giving a win multiplier for each nudge downwards required to fill the reel (see gameplay screenshots above).
This increased win multiplier stays for the remainder of the feature, so if you get this feature early on or multiple times, prepare for a potentially excellent bonus feature.
The xBombs feature can also activate and awards a sticky win multiplier that lasts for the duration of the bonus feature, further raising the winning potential of this slot.
Additional Bonus symbols that land awards +2 free spins in this bonus mode.