Series
Cthulhu series
Cthulhu slots as a changing sea-horror line
Unlike a conventional numbered sequel franchise, KA Gaming's Cthulhu series is connected more strongly by sea monsters and hunting imagery than by one repeated slot engine. Cthulhu Secret supplies the clearest traditional foundation: a 5x3 screen, 243 ways, medium volatility, free spins and a multiplier system built around wild and scatter triggers.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Cthulhu SecretKA Gaming | 2022 | 94% | Medium volatility | 55 |
 Hungry Shark CthulhuKA Gaming | 2023 | 96% | — | 61 |
 CthulhuLatestKA Gaming | 2024 | — | 32 |
The 2022 foundation uses carnival, fantasy and horror imagery around a conventional reel structure. Additional free spins and free-spins multipliers provide its escalation, while the 94% RTP places more mathematical pressure on the player than the next named entry.
Hungry Shark Cthulhu shifts the theme toward sharks, fish and hunting in 2023 and carries a listed 96% RTP. Its disclosed feature set is much leaner, so it should not be read as a direct expansion of Cthulhu Secret's 243-way free-spin model. Cthulhu pushes the action imagery further in 2024, adding pirates, treasure, dragons and guns while centering its listed mechanics on multipliers and random multipliers.
The series arc is therefore thematic rather than incremental: occult carnival reels first, shark-hunting imagery second, then a broader action-and-treasure treatment. Cthulhu Secret is the entry for a defined reel-and-bonus structure; the later games use the monster as a flexible character across different play concepts.