Slot theme
Underwater Slots
Browse 62 underwater slots from 24 providers. iSoftBet has the largest share in this category.
Category profile
About Underwater slots
This Underwater theme category contains 62 slots. The summary below highlights measurable game data instead of subjective ratings.
Across the matching games, average listed RTP is 96.11%, the highest listed RTP reaches 98.6%, the largest recorded max win is 168,004x, and the newest listed release is dated Oct 2, 2025. iSoftBet contributes the largest share with 6 games, while 23 other providers are also represented.
Category deep dive
Understanding Underwater slot data
Underwater is used here as a theme label: it groups titles that share a visual, narrative or subject category. It does not mean that every game uses the same reel layout, bonus system or payout mechanic. That distinction is useful when comparing games because two slots can share a theme while having very different mathematical settings and feature structures.
Data profile
Across the 62 matching games, Slot Data Hub shows an average listed RTP of 96.11%, a highest listed RTP of 98.6%, a largest recorded max win of 168,004x, and a newest released record dated Oct 2, 2025. RTP is populated for 100% of the group and max-win data for 97%, so the aggregate figures use only games where those values are available.
Provider and category mix
iSoftBet is the largest provider contributor with 6 games, or about 10% of this category, High is the most common listed volatility level with 28 records, and Paylines is the largest related mechanic group with 22 matching games. These distributions help show whether the category is concentrated around one studio or one secondary attribute, or spread across a broader part of the database.
How to compare these slots
When comparing Underwater slots, use the theme as the starting point rather than the final selection criterion. RTP can be used to compare theoretical long-run return, volatility to compare payout distribution, max win to compare the listed upper multiplier, and mechanic links to separate games that use different win structures. Release date and provider pages add another way to narrow the catalog without assuming that all Underwater titles behave alike.
Matching games
Underwater Slots directory
Released games are listed first, followed by upcoming games and titles without a listed date.
Mermaid’s Treasure Trove
Bob Marlin Goes Deep
Coin Crusher Hold and Win
Golden Fish Tank Party
Mermaids™
Kraken's Hunger
Treasure Trawler
Great Lagoon
Dorks of the Deep
Commander of Tridents
Razor Returns
Beast Below
Mermaid Megaways
Big Atlantis Frenzy
Out of the Ice
Shifting Seas
Book of Poseidon
Golden Fish Tank 2 GigaBlox™
Dragon King: Legend of the Seas
Orbs of Atlantis
Big Fin Bay
Cash Compass
Atlantis
Ocean's Treasure™
Beat the Beast: Kraken’s Lair
Deep Sea
Razor Shark
1429 Uncharted Seas®
Secrets of Atlantis
Ocean Fortune
Siren's Spell
Jellyfish Flow
Ocean's Call
Jellyfish Flow Ultra
Pearl Catcher
Razor Ways
Big Bite Push Ways
Neptune's Fortune Megaways
Atlantis The Forgotten Kingdom
Siren’s Kingdom
Atlantis 10K Ways
Atlantic Wilds
Sea of Riches
Killer Sharks: Action Collect
Kraken's Cove
Reef Raider™
Battle for Atlantis
Undine's Deep
Data note
How this category is built
This page groups games by the theme value supplied in the source data. RTP, volatility and maximum-win settings can vary between game configurations or operators.