The star of most underwater slots is a shark. The Razor series from Push Gaming shows how one idea evolves over five years. Razor Shark arrived on 3 September 2019 with ordinary lines, stacks of mystery symbols and a x50,000 cap. Razor Returns in 2023 grew to a 5×5 field with 40 lines, picked up multipliers, collectors and converters, and raised the cap to x100,000. Razor Ways, released on 7 August 2024, dropped lines altogether: its 6×3 starting grid gives 729 ways and the fully opened 6×6 gives 46,656, with x25,000 on top. Razor Shark Jackpots from 2026 adds jackpot prizes at medium volatility.
Big fish can be hunted differently too. Fishin’ Frenzy Megaways by Blueprint Gaming moves the classic fishing game onto six reels of changing height, up to 15,625 ways, high volatility and x10,000. Big Bass Mission Fishin’ gives a choice of two missions after three scatters, tops out at x5000 and sells bonus entry for 100 times the stake; the bonus buy explainer discusses when such purchases make sense. Big Bass Bonanza Megaways stays at x4000 with a high label.
Among the more unusual companions is Hacksaw Gaming’s Dorks of the Deep, released on 13 March 2025: an octopus, a mermaid and an ocean king on a 5×4 board with 14 lines, treasure-chest multipliers and medium volatility. Play’n GO’s Rich Wilde and the Shield of Athena dives to Atlantis with a Medusa respin, high volatility and x10,000.
NetEnt’s Secrets of Atlantis marks the calm edge of the theme, at 97.07% RTP, medium volatility and x1600, with Release the Kraken nearby at low volatility. The harshest is Beat the Beast: Kraken’s Lair, nine lines, very high volatility and x7777.
That makes a handy scale. A quiet evening: Secrets of Atlantis and Release the Kraken. Medium tempo: Razor Shark Jackpots and Dorks of the Deep. Maximum risk: Razor Returns and Kraken’s Lair. For how the Megaways engine works, read the Megaways guide.