- #1 Flash Diving
97% matchMostly Positive71% of 31 reviews2026
Dev: Paraxodon
Windows
Short horror game where you survey the descent of a capsule through a hole in the middle of an ocean, with only 4 lights and your ears to ensure your surroundings remain clear.
Why similar: Submarine 37.5% ★, Underwater 27% ★, Horror 8.6%, Dystopian 5.4%, Psychological Horror 5.1%
- #2 The Oily Depths
96% matchVery Positive84% of 112 reviews2026
Dev: Ryan R. Burns
Windows
Operate an oil-drilling submarine while taking instructions from a mysterious voice. Fail your quota, and they’ll cut your oxygen. This is deep-sea horror. Obey or drown.
Why similar: Submarine 38.5% ★, Underwater 21.4% ★, Horror 7%, Psychological Horror 6.6%, Dark 6.4%
- #3 Iron Lung
95% matchVery Positive92% of 11,191 reviews2022
Dev: David Szymanski
Windows
Median: 1.5 hrsMean: 2.1 hrs≥1hr: 69%
A short horror game where you pilot a tiny submarine through an ocean of blood on an alien moon.
Why similar: Submarine 39.6% ★, Underwater 25.2% ★, Horror 9.7%, Psychological Horror 6.6%, Atmospheric 4.7%
- #4 Unknown Contact
94% matchNo user reviews
Dev: laki
Windows
A short underwater horror game where you pilot a one-person submarine into a lightless trench, tracking a signal that has started answering back.
Why similar: Submarine 33.1% ★, Underwater 30.2% ★, Horror 10.8%, Psychological Horror 7.8%, Survival Horror 5.5%
- #5 The Trench
94% matchVery Positive86% of 167 reviews2022
Dev: Omar Chapa Hernandez
Windows
As captain of the Pandora sub, you must explore the Trench and retrieve data from the Neptune wreckage. But beware - the trench is home to unimaginable horrors that will test your courage. Can you survive the terrors of the deep and complete your mission, or will you become the next victim?
Why similar: Submarine 38.9% ★, Underwater 25.1% ★, Horror 7.7%, Survival Horror 7.2%, Realistic 6.3%
- #6 The Abyss Below
92% matchMostly Positive80% of 59 reviews2026
Dev: Broken RelayPub: PostHuman Interactive
Windows
The year is 1997. Pilot a small submersible into the depths of the Pacific to investigate a massive sonar anomaly. Navigate by instruments, scan targets, and uncover something far older than it should be.
Why similar: Submarine 43.7% ★, Underwater 31.1% ★, Horror 6.3%, Psychological Horror 4.7%, First-Person 4.5%
- #7 Submergent
93% matchMixed68% of 19 reviews2024
Dev: 626 Interactive
Windows
Explore and navigate an underwater cave in your submarine.
Why similar: Submarine 42.1% ★, Underwater 25.7% ★, Horror 9.4%, Psychological Horror 6.9%, Atmospheric 5.1%
- #8 Sunken Seeker
91% match4 user reviews50% of 4 reviews2026
Dev: Reckonment Studio
Windows
Sunken Seeker is a short, first-person underwater horror experience. Forced to pilot a decaying submersible, you have 7 days to pay off a massive debt. Navigate pitch-black waters, scan for salvage beyond your headlights, and survive the shift before the Director cuts your life support.
Why similar: Submarine 47.4% ★, Underwater 32.7% ★, Horror 6.5%, First-Person 5.2%, Adventure 3.5%
- #9 Seal The Breach
91% matchNo user reviews
Dev: ACarterGames
Windows
A 3D survival experience set within a cramped one-man submarine exploring a hostile ocean trench.
Why similar: Submarine 45.7% ★, Underwater 18.4% ★, Horror 10.6%, Psychological Horror 6.7%, Survival Horror 5.8%
- #10 ABYSS - 9
90% matchNo user reviews
Dev: Iron Cat Forge
Windows
In the year 5026, you are a disposable miner sent to the bottom of the ocean on the ABYSS-9 expedition. Pilot your 'iron coffin', manage unstable vital systems, and survive uncharted abyssal creatures. In the abyss, silence is as dangerous as the pressure.
Why similar: Submarine 39.6% ★, Underwater 27.4% ★, Survival Horror 9.5%, Management 5.1%, Dystopian 5%
- #11 Abyssal Rust
89% matchNo user reviews
Dev: Inmersionbit
Windows
Navigate an open-world ocean in a rusted submarine with monstrous creatures lurking in the depths. Collect artifacts, upgrade your submarine and descend into even deeper waters. If you didn’t fear the deep sea before, now you will.
Why similar: Submarine 40.9% ★, Underwater 32.5% ★, Horror 8.8%, Survival Horror 8.1%, Adventure 2.4%
- #12 Submarine Terror
89% matchPositive89% of 18 reviews2024
Dev: Sungame Studio
Windows
A sinister entity lurks in the depths. Descend into the abyss and extract knowledge about it.
Why similar: Submarine 50.4% ★, Underwater 27.2% ★, Horror 8.6%, Realistic 5.6%, Atmospheric 4.3%
- #13 13km Deep
88% matchNo user reviews
Dev: RatLovers Studio
Windows
You are an employee of U.D.E. Your mission is to explore the ocean depths, investigate ancient artifacts, and... save your own skin. Survive, uncover the corporation's secrets, and find out what lies hidden in the depths.
Why similar: Submarine 38.6% ★, Underwater 26.5% ★, Horror 8.2%, Supernatural 7.1%, Psychological Horror 5.4%
- #14 Thalassophobia
87% matchPositive100% of 12 reviews2024
Dev: NGreenDev
Windows
As a cataclysmic event rocks the planet, you find yourself in an old, decrepit submarine tasked with only one goal: survive. Manage the internal systems to keep yourself alive and fend off undersea horrors as they attempt to cut your journey short.
Why similar: Submarine 56.6% ★, Underwater 31.9% ★, Horror 7.2%, Atmospheric 3%, Singleplayer 0.8%
- #15 7821 Akuji
86% match4 user reviews100% of 4 reviews2025
Dev: CatBiteStudios
Windows
7821 Akuji is a first person liminal horror experience. Pilot a tiny, jury-rigged submersible to rescue a lost science crew.
Why similar: Submarine 47% ★, Underwater 28.7% ★, Horror 5.8%, Realistic 4.4%, Dystopian 4.2%
- #16 Watertight
85% matchVery Positive88% of 199 reviews2025
Dev: Tiny Studio
Windows
A short first-person horror game. An accident cripples your submarine while trying to find the wreck of the Titanic. In the darkness, you must restore life-support systems through tense puzzles, only to discover that you are not alone.
Why similar: Submarine 40.7% ★, Underwater 24.1% ★, Horror 11.6%, Psychological Horror 7.9%, Atmospheric 5.9%
- #17 The Diving Bell
86% matchNo user reviews
Dev: Paul BanksPub: PHB Media LTD
Windows
Trapped in a deep-sea diving bell, your systems are failing. Descend to find a missing expedition - survive what's hunting you.
Why similar: Submarine 35.5% ★, Underwater 22.5% ★, Horror 9.2%, Survival Horror 8.7%, Psychological Horror 7%
- #18 Titanic Terror
83% matchNo user reviews
Windows
A submarine touring the Titanic has gone missing. As part of the coast guard, you have been called in to locate and rescue the crew before their oxygen runs out.
Why similar: Submarine 45.2% ★, Underwater 28.9% ★, Horror 7.3%, Psychological Horror 5.8%, First-Person 4.7%
- #19 Ocean Pressure
84% matchMixed66% of 29 reviews2023
Dev: Ivan Huliakevich
Windows
Ocean Pressure is a singleplayer game where you as an old scientist piloting your handmade submarine in the bottom of the ocean. Your mission is explore the ocean and collect required data with help of your submarine.
Why similar: Submarine 42.6% ★, Underwater 27.3% ★, Horror 6.9%, Psychological Horror 5.5%, Realistic 4.9%
- #20 Why's It Getting DARKER?!
82% matchNo user reviews2026
Dev: Kenan'sGames
Windows
The light is your only lifeline. Descend into a crushing, thalassophobic abyss where every photograph could be your last. Investigate unpredictable deep-sea horrors and explore the vast, dark unknown - all while being 'assisted' by a darkly sarcastic AI.
Why similar: Submarine 31% ★, Underwater 24% ★, Horror 7.5%, Survival Horror 7.3%, Psychological Horror 6.6%
- #21 Discoveries of the Deep
84% match2 user reviews100% of 2 reviews2021
Dev: Capstone SoftwarePub: Ziggurat
Windows
Join an expedition to the unexplored abyss – a fascinating world of strange creatures, lost vessels, and a wealth of untold secrets. Search for ancient wrecks, underwater trenches, missing airplanes, and even the Titanic. Climb on board your mini-sub and dive as deep as you dare!
Why similar: Submarine 46.2% ★, Underwater 35.6% ★, Management 5.9%, Investigation 4.6%, Realistic 4.2%
- #22 There's Nothing Down There
80% matchVery Positive85% of 379 reviews2026
Dev: Tim Trankle
Windows
There's Nothing Down There is a short undersea horror exploration game. Descend into a sinkhole at the bottom of the ocean and discover the remains of a lost, yet not dead, civilization.
Why similar: Submarine 54.7% ★, Underwater 13.6% ★, Horror 11.3%, Realistic 7.5%, First-Person 5.6%
- #23 Dead Abyss
81% matchMixed57% of 28 reviews2024
Dev: Azalea Interactive
Windows
A short first-person horror experience that places you in the rusted out hull of a mysteriously abandoned shipwreck. Search for clues, solve puzzles, and uncover the mystery of the wreckage, but beware of the evil that lurks within.
Why similar: Submarine 38.9% ★, Underwater 24.5% ★, Horror 8.1%, Realistic 6.8%, Psychological Horror 6.3%
- #24 Sea under the sea under the sea
81% match6 user reviews17% of 6 reviews2024
Dev: MA
Windows
An underwater survival horror game where the Earth is covered in water
Why similar: Submarine 47.3% ★, Underwater 32.8% ★, Horror 9.9%, Psychological Horror 6.7%, Atmospheric 2.6%
- #25 Sonar Scout
79% matchPositive100% of 26 reviews2024
Dev: Dan SchumacherPub: Spelkollektivet
Windows
Pilot your submarine to activate and reestablish a network of beacons while carefully utilizing your sonar to navigate the low-visibility depths of the ocean.
Why similar: Submarine 40.7% ★, Underwater 26.4% ★, Investigation 7.4%, Horror 7.3%, Dark 6.8%
- #26 20,000 Miles Under the Sea
82% matchMostly Negative40% of 153 reviews2020
Dev: CreaTeam
Windows
Become a fearless underwater explorer and reach the bottom of The Mariana Trench to win 20,000* REAL DOLLARS!
Why similar: Submarine 45.3% ★, Underwater 30.2% ★, Horror 10.2%, Realistic 4.9%, First-Person 3.4%
- #27 The Old Gentleman
79% matchPositive100% of 18 reviews2024
Dev: Can't Get Enough Games
Windows
Use Morse Code to communicate with your crewmate and ward off a stalking monster in this short point-and-click horror game.
Why similar: Submarine 46.1% ★, Survival Horror 13%, Horror 11.7%, Supernatural 9.7%, Atmospheric 5.8%
- #28 CRUSH DEPTH
77% matchVery Positive99% of 67 reviews2025
Dev: Earth Giant
Windows
CRUSH DEPTH is first-person sci-fi horror game set at the bottom of the ocean. A salvage operation that would set you up for life goes sideways when you realize you're not alone down there. You'll solve puzzles and run from danger as you uncover the mysterious fate of Eclipse Station.
Why similar: Submarine 42.7% ★, Underwater 33.1% ★, Horror 9.2%, First-Person 4.8%, Atmospheric 3.1%
- #29 Full Fathom
78% matchNo user reviews
Dev: DÆMON House
Windows
Full Fathom is an oceanic survival horror game. Pilot a deteriorating submarine as it drifts through grim waters, keeping it maintained as it is your only lifeline in the hostile, merciless ocean.
Why similar: Submarine 41.7% ★, Underwater 26.7% ★, Survival Horror 8.2%, Horror 6.9%, Psychological Horror 5.8%
- #30 Subterror
76% matchVery Positive90% of 475 reviews2025
Dev: Team Monumental
Windows
Median: 2.5 hrsMean: 3.9 hrs≥1hr: 74%
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
Why similar: Submarine 38% ★, Underwater 27.7% ★, Horror 10%, First-Person 5.9%, Survival Horror 5.9%
- #31 Scyla
77% matchPositive81% of 16 reviews2024
Dev: Belice StudiosPub: Voxel School
Windows
Dive into the waters of Scyla, a third-person 3D exploration adventure inspired by Lovecraft's universe. Discover the mysteries hidden into the depths as you pilot a submarine through a strange cave system. Run away from a criature that stalks you.
Why similar: Submarine 48% ★, Underwater 30.5% ★, Investigation 6.6%, Survival Horror 5.8%, Adventure 3.7%
- #32 Aphotic Depths
76% matchNo user reviews
Dev: Deylene BensediraPub: sharkstunes
Windows
short horror underwater experience where you explore deeper and deeper a strange location on earth that seems to behave differently
Why similar: Submarine 50.7% ★, Horror 11.5%, Survival Horror 10.9%, First-Person 9.1%, Psychological Horror 8.5%
- #33 Sunken Veins
75% matchPositive100% of 25 reviews2025
Dev: Skedaddle Games
Windows
Sunken Veins is a resource management horror game set in a deep sea mining facility. You collect resources deposited by an underwater drill, avoid adaptive monsters and drain away overwhelming floods of water caused from mining operations.
Why similar: Submarine 38.8% ★, Underwater 25.8% ★, Horror 7%, Survival Horror 6.7%, Realistic 6.2%
- #34 Magnavis
75% matchNo user reviews
Dev: Vorles Games
Windows
Set in the depths of the Red Seas, Magnavis is a 1-4 player co-op submarine horror survival game. Manually operate grotesque ship systems powered by living organs, weld catastrophic leaks, and survive with your crew in an abyss where unknown terrors lurk in the absolute dark.
Why similar: Submarine 45.2% ★, Underwater 24.7% ★, Horror 8.3%, Survival Horror 6.8%, Dark 5.6%
- #35 Dark of the Depths
73% matchMostly Positive73% of 15 reviews2026
Dev: GhastlyVastly
Windows
A first-person deep sea exploration game. Use only a torch to navigate through rusted structures, encountering both dangerous and harmless sea creatures. Uncover the mysteries of the trench, and experience the phobia-inducing atmosphere of the ocean floor.
Why similar: Submarine 45.8% ★, Underwater 33% ★, Horror 7.9%, Realistic 3.8%, First-Person 3.4%
- #36 Burn Depth
74% matchNo user reviews
Dev: Luke Van Zandt
Windows
Burn Depth is an tense, underwater, horror exploration game. Find a path through a dangerous and unexplored area of the ocean filled with menacing creatures. Manage your vessel's resources, survive the dive, and uncover the mysteries beneath the sea floor.
Why similar: Submarine 42.6% ★, Underwater 29.6% ★, Horror 8.4%, Psychological Horror 6%, Atmospheric 4.6%
- #37 Hadal
74% matchNo user reviews2026
Dev: CoralHeavens
Windows
Guide a Nereid Freight submarine crew through Europa’s hostile under-ice oceans. Deliver essential cargo, salvage wrecks, repair failing stations, hunt dangerous lifeforms, and survive in the crushing darkness where every dive carries risk — and nothing stays quiet for long.
Why similar: Submarine 47.9% ★, Underwater 29.6% ★, Survival Horror 8.9%, First-Person 5.2%, Atmospheric 2.9%
- #38 Under The Waves
73% matchMostly Positive78% of 2,098 reviews2023
Dev: Parallel StudioPub: Spotlight by Quantic Dream
Windows
Median: 2.6 hrsMean: 19.7 hrs≥1hr: 70%
Stan, a professional diver in the North Sea, is struggling to overcome a life-changing loss during an extended mission underwater. Stuck in his self-imposed solitude, he starts to experience strange events and will have to make the most significant choice of his life...
Why similar: Underwater 44.5% ★, Submarine 38.3% ★, Adventure 6.5%, Atmospheric 6.2%, Sci-fi 2.3%
- #39 Barotrauma
72% matchVery Positive94% of 89,315 reviews2023
Dev: FakeFishPub: Daedalic Entertainment
Windows · Mac · Linux
Median: 9.0 hrsMean: 56.1 hrs≥1hr: 91%
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
Why similar: Submarine 46.5% ★, Underwater 25.9% ★, Survival Horror 8.2%, Horror 8.1%, Management 5.4%
- #40 Project SEVER
73% matchNo user reviews2026
Dev: Siberian MakeshiftPub: IndieArk
Windows
Project Sever is an adventure submarine simulator with a touch of horror. Master the controls of an old Project "Sever" submarine and learn to maintain it in working order to escape a deadly underwater trap and solve the mystery of the Anomalous Zone.
Why similar: Submarine 42.4% ★, Underwater 25.1% ★, Horror 7.1%, Realistic 6.2%, Psychological Horror 5.9%
- #41 Cleaning The Ocean
72% matchNo user reviews
Dev: Nasheik
Windows · Linux
The ocean didn't get dirty on its own. Pilot your submarine through vast underwater worlds, collect the trash humanity left behind, and uncover what's been growing in the dark. Clean, explore, upgrade and try not to look too closely at what's following you.
Why similar: Submarine 56.5% ★, Underwater 32.7% ★, Horror 6.1%, Adventure 4.1%, Singleplayer 0.3%
- #42 Subcontractors
71% matchNo user reviews
Dev: HasteDev
Windows
You and up to 7 fellow subcontractors have been hired to deliver volatile cargo through dangerous depths. Stay coordinated, keep the payload intact, and try not to panic when everything goes wrong. The company expects delivery.
Why similar: Submarine 48.7% ★, Underwater 29.7% ★, Horror 6.3%, Psychological Horror 4.8%, First-Person 4.1%
- #43 Aquarift
70% matchNo user reviews
Dev: FloxStudios
Windows
Survive in a harsh underwater environment filled with mysterious and aggressive fauna. Gather resources, build bases, and craft equipment to explore an underwater alien world! Swim through interconnected biomes in a metroidvania style.
Why similar: Submarine 59.2% ★, Underwater 35.7% ★, Adventure 4.3%, Singleplayer 0.8%
- #44 BATHYSPHERE
70% matchNo user reviews
Dev: base0
Windows
The year is 1940—you wake up in a bathysphere, stuck in an endlessly repeating battle against enemies unknown. Investigate your surroundings and uncover the truth behind the time loop.
Why similar: Submarine 36.5% ★, Underwater 26.5% ★, Horror 8.8%, Dark 8.2%, Psychological Horror 6.2%
- #45 Static Dread: The Submarine
67% matchVery Positive84% of 275 reviews2026
Dev: solarsuit.gamesPub: Polden Publishing
Windows
Descend into Lovecraftian horror aboard a claustrophobic military submarine. Assign tasks as a captain’s right hand, analyze sonar signals, make hard decisions, and keep the crew from madness. Dark horrors lurk both within… and beyond the hull.
Why similar: Submarine 35.5% ★, Underwater 21.8% ★, Horror 11%, Psychological Horror 9.4%, Dark 8.2%
- #46 Guilt Lurks Below
69% matchNo user reviews
Dev: The Ambitious Game Dev
Windows
Explore the deepest depths of an under ground ocean as you survey the environment by recording audio and taking pictures. Collect fuel found in the caves of these depths. Be careful though, Some thing lurks in these waters.
Why similar: Underwater 42.6% ★, Horror 13.5%, Psychological Horror 12.6%, Survival Horror 10.7%, Realistic 7.1%
- #47 Abyssalis
69% matchNo user reviews
Dev: Veneficus
Windows
Descend through the ocean layers, purify marine life, and survive the abyss in this bullet hell roguelite. Face colossal bosses, choose powerful upgrades, and uncover the curse's origin. Can you save the ocean before you become fish bait?
Why similar: Submarine 51.3% ★, Underwater 39.9% ★, Atmospheric 6.1%, Adventure 2.7%
- #48 Europa One
70% matchPositive100% of 14 reviews2023
Dev: Wicked Rooster
Windows
Explore the ice-encrusted ocean of Jupiter's moon Europa.
Why similar: Submarine 50.2% ★, Underwater 32.2% ★, Atmospheric 4.9%, Realistic 4.8%, First-Person 3.3%
- #49 Under the Water Depths
71% match9 user reviews50% of 9 reviews2023
Dev: Submerged Squad
Windows
Under the Water Depths is a first-person game in which you will dive into a trench in the middle of an unknown ocean. The depths of the sea hide sinister yet mystical secrets.
Why similar: Underwater 44.7% ★, Submarine 39.8% ★, Adventure 6.2%, Dark 4.4%, First-Person 3.9%
- #50 FULL METAL COFFIN
66% matchVery Positive95% of 150 reviews2026
Dev: Titanite
Windows
FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players. Load the torpedoes, dodge incoming fire, and eliminate the enemy.
Why similar: Submarine 50.3% ★, Underwater 29.3% ★, Management 7.4%, Dark 5.7%, Atmospheric 4.8%
- #51 Galactic Fruit
69% matchNo user reviews
Dev: ELDERSOFT
Windows
Galactic Fruit is a short horror game about exploring space. Pilot a ship alone in search of planets and information about the unknown fate of your predecessor.
Why similar: Submarine 42.8% ★, Horror 9.5%, Survival Horror 8.5%, Psychological Horror 8%, Dark 6.7%
- #52 Barren Depths
71% match7 user reviews57% of 7 reviews2022
Dev: Kyle Obranovic
Windows
Escape a confusing cave system without being eaten in this short, underwater horror game.
Why similar: Underwater 51.6% ★, Horror 13.3%, Survival Horror 11.4%, Realistic 8.2%, Atmospheric 6.1%
- #53 Subcraft
68% matchNo user reviews
Dev: Cardi-buildsPub: Just One Week Games
Windows · Mac
Subcraft is a 2-3 player co-op submarine adventure. Dive beneath a frozen world, explore dangerous caves, mine resources, fight monsters, and help rebuild civilisation.
Why similar: Submarine 56.7% ★, Underwater 33.1% ★, Adventure 4.8%, Atmospheric 3.6%, Sci-fi 1.8%
- #54 Deeper
67% matchNo user reviews
Dev: Team Breakout
Windows
Go on expeditions with your friends to explore the depths in search of treasures, upgrade your gear, and dive back in deeper.
Why similar: Submarine 40.5% ★, Underwater 34.2% ★, Horror 10.5%, Atmospheric 5.2%, Dark 5%
- #55 Last Dive: Echo Trench
65% matchMixed67% of 21 reviews2026
Dev: Trenchveil Studio
Windows
Descend from the fragile safety of your diving bell into a dark shipwreck zone, search for sunken gold, survive escalating anomalies, and uncover what keeps pulling you back.
Why similar: Underwater 47.7% ★, Horror 17.4%, Psychological Horror 12.5%, Atmospheric 7.6%, Dark 7.2%
- #56 Sonorous | Deep Down Below
67% matchNo user reviews
Dev: HOONAYA
Windows
SONOROUS – Deep Down Below is an unforgiving underwater first-person survival game set in a dystopian world. Find your sunken research to save humanity from an eternal life on the open sea in a continuous fight for survival.
Why similar: Submarine 39.7% ★, Underwater 32.5% ★, Dystopian 8.8%, Realistic 6.5%, First-Person 4.4%
- #57 Biolum
68% matchVery Positive83% of 123 reviews2021
Dev: IKOPub: Astrea
Windows
Biolum is a 30min VR sci-fi narrative experience. Dive to uncharted depths of the ocean and discover a beautiful world of bioluminescent creatures. But all is not what it seems. What lies beneath the surface?
Why similar: Submarine 40.7% ★, Underwater 30% ★, Horror 11.4%, Realistic 6.7%, First-Person 4.5%
- #58 Scary Cave Diving
64% matchMixed60% of 15 reviews2026
Dev: Ekblad
Windows
Can you hold your breath when panic sets in? Experience the terror of deep-sea cave diving. Scavenge resources and fight to survive as you navigate procedurally generated underwater caves stalked by an apex predator!
Why similar: Underwater 38.2% ★, Survival Horror 11.5%, Horror 11%, Psychological Horror 9.9%, Dark 7.9%