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Underwater Themed Slots — Free Demos
Browse 215 free Underwater themed slot demos. Instant play in your browser with full RTP, volatility, and bonus feature details.
215
Slots
95.4%
Avg RTP
100,000x
Max Win
Most games from Playtech (10 slots)
Showing 1–96 of 215
QuickSpinPearl O' Plinko
98.1% RTP
Low
Max Win~500xest.
Bonus BuyBonus Round
Casino Web ScriptsNo Demo
No DemoScatter Beach Party
97.55% RTP
Med
Max Win~2,000xest.
Free SpinsExpanding WildsWilds+1
NetEntNo DemoSecrets of Atlantis
97.1% RTP
Med
Max Win~2,000xest.
Expanding WildsWildsBonus Round
PlaytechCaptain's Treasure
97.06% RTP
Med
Max Win~2,500xest.
WildsJackpot
AmaticSharky's Gang
97.06% RTP
Med
Max Win~2,000xest.
Free SpinsWildsMultipliers
RTGMermaid's Pearls
97% RTP
Med
Max Win2,500x
Free SpinsStacked WildsWilds+2
RTGNo DemoOcean Oddities
97% RTP
Med
Max Win250x
Free SpinsBonus Round
TaDa GamingPirate Queen
97% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
Funky GamesPoseidon 777
97% RTP
Med
Max Win~1,000xest.
Free Spins
AmaticPrincess of Pearls
97% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
RTGNo DemoShark School
97% RTP
Med
Max Win200x
Free SpinsBonus Round
Funta GamingSpace War
97% RTP
High
Max Win~5,000xest.
Gong GamingViking Queen
96.92% RTP
Med-Hi
Max Win~3,000xest.
Free Spins
SpadeGamingClash of the Giants
96.85% RTP
Med
Max Win1,250x
Free Spins
Blueprint GamingNo DemoMaster of Atlantis
96.75% RTP
Med
Max Win800x
Free SpinsBonus Round
SkywindRuby Pearl
96.74% RTP
High
Max Win~5,000xest.
Free SpinsStacked WildsWilds+1
GamesysNo DemoWonders of the Deep
96.74% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
AmaticWild Shark Bonus Buy
96.73% RTP
High
Max Win68x
Free SpinsBonus BuyBonus Round
Pocket Games SoftNo DemoMermaid Riches
96.71% RTP
High
Max Win~5,000xest.
Free SpinsSticky WildsWilds
HabaneroOrbs of Atlantis
96.7% RTP
Med
Max Win10,000x
Free SpinsBonus Round
Push GamingRazor Shark
96.7% RTP
High
Max Win100x
Free SpinsMultipliers
Pragmatic PlayStar Pirates Code
96.7% RTP
High
Max Win~5,000xest.
HabaneroJellyfish Flow Ultra
96.69% RTP
High
Max Win~5,000xest.
Pragmatic PlayGreat Lagoon
96.64% RTP
Med
Max Win~1,000xest.
Free SpinsWilds
Play'n GoSea Hunter
96.64% RTP
High
Max Win~5,000xest.
Bonus Round
Push GamingRazor Ways
96.6% RTP
Med-Hi
Max Win25,000x
Free SpinsWilds
MicrogamingMermaids Millions
96.56% RTP
Low
Max Win~500xest.
Free SpinsBonus Round
Push GamingRazor Returns
96.55% RTP
High
Max Win100,000x
Free SpinsMystery Symbols
Atomic Slot LabMermaid Pays 100
96.52% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
4ThePlayer6 Wild Sharks
96.5% RTP
High
Max Win10,368x
Free SpinsBonus Round
High 5 GamesMajestic Sea
96.5% RTP
Low
Max Win10,000x
Free SpinsWildsScatters+1
MicrogamingNo DemoLeagues of Fortune
96.49% RTP
High
Max Win~5,000xest.
Free SpinsStacked WildsWilds+1
Blue Ring StudiosMermajesty
96.49% RTP
Med
Max Win1,000x
Free SpinsJackpot
Play'n GoNo DemoEye of the Kraken
96.41% RTP
Med
Max Win150x
Free SpinsBonus Round
Infinity Dragon StudiosAtlantis Power Combo
96.4% RTP
High
Max Win11,650x
Free SpinsJackpot
WazdanMighty Fish: Blue Marlin
96.4% RTP
High
Max Win2,500x
Free SpinsJackpot
Pragmatic PlayRelease the Kraken Megaways
96.4% RTP
High
Max Win10,000x
Free SpinsMegaways
NetEntWild Water
96.4% RTP
High
Max Win~5,000xest.
Free SpinsExpanding WildsWilds+1
Naga GamesMermaid's Treasure
96.36% RTP
Med
Max Win~2,500xest.
Free SpinsJackpot
GamebeatSea Secret
96.34% RTP
High
Max Win~5,000xest.
Free SpinsRespins
Fantasma GamesDesert Shark
96.33% RTP
High
Max Win16,000x
Free SpinsWilds
Bullshark GamesClover Club
96.31% RTP
Med-Hi
Max Win12,000x
Free SpinsBonus BuyWilds+3
NetEntNo DemoEvolution
96.3% RTP
High
Max Win~5,000xest.
Free SpinsBonus Round
GameArtLucky Reefs
96.29% RTP
Low
Max Win~500xest.
Free SpinsWildsRespins
MicrogamingEmperor of the Sea
96.28% RTP
High
Max Win~5,000xest.
Free SpinsStacked WildsWilds+1
Bullshark GamesJawsome Pirates
96.28% RTP
Med
Max Win12,000x
Free SpinsBonus Buy
Bullshark GamesJunkyard Kings
96.26% RTP
Med
Max Win~2,000xest.
Free SpinsBonus Buy
PlaytechAtlantis: Cash Collect
96.25% RTP
Med
Max Win~1,000xest.
Cash Collect
Play'n GoOctopus Treasure
96.25% RTP
Med
Max Win5,000x
Free Spins
NetEntNo DemoEast Sea Dragon King
96.23% RTP
Low
Max Win1,000x
WildsCluster Pays
MicrogamingNo DemoOctopays
96.23% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
Blue Ring Studios6 Pure Pearls
96.2% RTP
Med
Max Win1,000x
Free SpinsJackpot
SpinomenalBook of Sirens Golden Pearl
96.2% RTP
High
Max Win10,000x
Free Spins
Panga GamesHappy Ocean
96.2% RTP
Med-Hi
Max Win~3,000xest.
Free Spins
Play'n GoMega Don
96.2% RTP
High
Max Win10,000x
Free Spins
MicrogamingAtlantis The Forgotten Kingdom
96.19% RTP
High
Max Win7,200x
Free Spins
FUGASONo DemoSea Underwater Club
96.18% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
ReelPlayAtlantis 10K Ways
96.16% RTP
Med
Max Win~1,000xest.
Free Spins
Evoplay EntertainmentSea of Wealth
96.15% RTP
Med
Max Win~3,000xest.
Free SpinsBonus BuyJackpot
SpinomenalBook of Ocean Outlaws
96.14% RTP
High
Max Win5,000x
Free SpinsBonus BuyExpanding Wilds+1
Bally WulffAtlantic Wilds
96.13% RTP
Low
Max Win~500xest.
Wilds
Mount OlympusTriton's Secret
96.13% RTP
High
Max Win~10,000xest.
Free SpinsJackpotBonus Round
Barbara BangDolphin's Blessing
96.11% RTP
Med-Hi
Max Win~3,000xest.
Free Spins
PopiplayKeys to the Sea
96.11% RTP
High
Max Win10,200x
Free SpinsMultipliers
PlaytechShark Blitz
96.11% RTP
Med
Max Win~2,500xest.
Free SpinsWildsScatters+1
ReelPlayAtlantis Megaways
96.1% RTP
Med
Max Win100x
Free SpinsBonus Round
PlaysonPirate Sharky
96.1% RTP
High
Max Win20,000x
Free Spins
NetEntNo DemoSilent Run
96.1% RTP
High
Max Win~5,000xest.
Free SpinsWildsBonus Round
NetEntNo DemoSubtopia
96.1% RTP
Med
Max Win~1,000xest.
Free SpinsWildsBonus Round
Relax GamingAtlantis Crush
96.09% RTP
High
Max Win10,000x
Free SpinsBonus Buy
Realistic GamesDestination Atlantis
96.09% RTP
High
Max Win22,000x
Free SpinsStacked WildsMultipliers
NetEntMermaids
96.09% RTP
Med
Max Win~1,000xest.
Free SpinsRandom WildsWilds
SYNOT GamesAtlantis Gold
96.08% RTP
Med
Max Win~2,500xest.
Free SpinsJackpot
IGTOcean Magic
96.07% RTP
Med
Max Win~1,000xest.
Free SpinsWildsBonus Round
Pragmatic PlayPuffers Vs Sharks
96.07% RTP
High
Max Win15,000x
Free SpinsBonus BuyExpanding Wilds+1
WorldMatchQueen of Oceans
96.07% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
EGTBlue Oceans
96.06% RTP
Med
Max Win~3,000xest.
Free SpinsExpanding WildsWilds+1
KonamiSecret of the Mermaid
96.06% RTP
Med
Max Win60x
Free SpinsBonus Round
Relax GamingShark Wash
96.06% RTP
High
Max Win5,000x
Free SpinsWildsCascading Reels
StakeLogicWild Wild Bass 2
96.06% RTP
Med-Hi
Max Win10,000x
Free SpinsWilds
Tornado Games40 sharks
96.04% RTP
Low
Max Win~500xest.
Free Spins
Pragmatic PlayLobster Bob's Sea Food & Win It
96.04% RTP
High
Max Win3,000x
Free SpinsBonus Round
SpinomenalStory of The Little Mermaid
96.04% RTP
Med-Hi
Max Win3,000x
Free Spins
MicrogamingAquatic Treasures
96.03% RTP
Med
Max Win~1,000xest.
Games LabBlue Paradise
96.03% RTP
Med
Max Win~1,000xest.
Free SpinsWilds
Pragmatic PlaySea Fantasy
96.02% RTP
High
Max Win5,000x
Free SpinsWilds
Shuffle MasterDeep Sea Magic
96.01% RTP
High
Max Win1,250x
Free SpinsBonus Round
High Limit StudioMighty Titan
96.01% RTP
High
Max Win~10,000xest.
Free SpinsJackpot
Pragmatic PlayRelease the Kraken 2
96.01% RTP
High
Max Win50x
Free SpinsStacked WildsWilds
Blueprint GamingRise of Atlantis
96.01% RTP
High
Max Win10,000x
Free SpinsMultipliers
High 5 Games1000 Pearls
96% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
KA GamingAquatic Adventurer
96% RTP
Med-Hi
Max Win5,415x
Free Spins
MicrogamingAriana
96% RTP
Med
Max Win~1,000xest.
Free SpinsBonus Round
Zeus PlayBubbles & Pearls
96% RTP
High
Max Win~5,000xest.
Free SpinsBonus Round
OneGameDragon King of the Ocean
96% RTP
Med-Hi
Max Win~3,000xest.
Free Spins
MicrogamingFish Party
96% RTP
Med
Max Win~1,000xest.
Free SpinsStacked WildsWilds+1
