Games Like Mouthwashing

A short horror game where you pilot a tiny submarine through an ocean of blood on an alien moon.

Why similar: Psychological Horror 27.7%, Horror 20.7%, Walking Simulator 11.2%, Atmospheric 9.9%, Dark 7.2%

Why You'll Like It: Its claustrophobic retro sci-fi setup and minimal but crushing psychological pressure make it one of the closest tonal matches on Steam.

From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.

Why similar: Psychological Horror 19.5%, Horror 13.7%, Gore 13.4%, Walking Simulator 12.9%, Dark 9.1%

Why You'll Like It: It matches Mouthwashing's blend of sci-fi isolation, existential dread, disturbing body horror, and story-driven first-person exploration.

1975. Disaster strikes the Beira D oil rig off the coast of Scotland. Navigate the collapsing rig to save your crew from an otherworldly horror on the edge of all logic and reality in this 3x BAFTA Games Award-winning narrative horror experience.

Why similar: Psychological Horror 18.3%, Gore 13.8%, Walking Simulator 12.3%, Horror 11.8%, Narrative 9.8% ★

Why You'll Like It: Like Mouthwashing, it traps a small crew in a doomed industrial setting and escalates from human tension into visceral body horror.

Are sardines trustworthy? Are you? Do you want to be? How Fish is Made is a janky little jaunt through the world of surrealist storytelling. Now featuring a Katamari-like DLC!

Why similar: Narrative 16.2% ★, Psychological Horror 14.2%, Psychological 14%, Surreal 13.5%, Walking Simulator 11.2%

Why You'll Like It: From the same developers, it delivers the same grotesque surrealism, oppressive atmosphere, and short-form psychological horror built around flesh, guilt, and collapse.

A classic survival horror experience set in a dystopian future where humanity has uncovered a dark secret. Unravel a cosmic mystery, escape terrifying creatures, and scavenge an off-world government facility as Elster, a technician Replika searching for her lost dreams.

Why similar: Psychological Horror 50%, Dark 17.6%, Atmospheric 15.2%, Mystery 12.3%, Adventure 2.4%

Why You'll Like It: This is another retro-styled sci-fi nightmare where isolation, decaying reality, and intimate psychological horror drive the experience.

A slow burn retro horror game, in which you arrive at the old lighthouse on a small island near the coast of the United States. After the previous keeper has gone missing, you need to take over his duties and watch after the light.

Why similar: Psychological Horror 16.8%, Horror 15.5%, Walking Simulator 10.3%, Surreal 9.3%, Retro 8.8%

Why You'll Like It: Its lo-fi visuals, surreal horror logic, and steadily collapsing sense of reality feel very close to Mouthwashing's mood.

Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M.

Why similar: Space 16.8%, Horror 16%, Psychological Horror 15.3%, Indie 9.8%, Thriller 9.2%

Why You'll Like It: Its abandoned-spacecraft storytelling, mounting unease, and focus on piecing together a crew disaster make it a strong thematic follow-up.

You're here to slay the princess. Don't believe her lies.

Why similar: Psychological Horror 42.4%, Horror 20.3%, Story Rich 14.6%, Dark Humor 11.8%, First-Person 6.9%

Why You'll Like It: Though structurally different, it nails the same kind of oppressive psychological storytelling where every interaction feels poisoned and inescapable.

The adventure plunges you into the tortured and hidden past of five humans. Delve into their darkest fears. Outwit the Master Computer AM in a game of psychological warfare. Disturbing, compelling. An adventure you won't easily forget !!

Why similar: Psychological Horror 27%, Horror 21.7%, Retro 16.4%, Surreal 10.2%, Story Rich 9.5%

Why You'll Like It: Its cruel psychological focus and interest in trapped people being broken by forces beyond them make it a natural narrative companion piece.

Stories Untold is a compilation tape of four experimental adventures, including a remaster of the original hit episode “The House Abandon”.

Why similar: Psychological Horror 28%, Horror 19.6%, Thriller 13.6%, Retro 11.2%, Atmospheric 10.4%

Why You'll Like It: It uses retro presentation and layered narrative horror to create the same kind of intimate, unsettling, slowly revealing dread.

What you are about to do has not been approved by the Vatican. As a young priest, struggle against demons, cultists, and your own weakening faith in this pixel horror game inspired by the era of classic 8-bit gaming and the "Satanic Panic" of the 1980s.

Why similar: Psychological Horror 27.2%, Horror 18.1%, Gore 13.1%, Retro 12.9%, Dark 9.5%

Why You'll Like It: Its retro aesthetic, bleak violence, and intense psychological-spiritual horror echo Mouthwashing's ability to feel simple on the surface but deeply corrupted underneath.

Smuggle contraband VHS tapes across the border. Discover the remnants of illicit industry. Prepare for an assassination. This is Paratopic, an atmospheric retro-3D horror adventure through a cursed fever dream.

Why similar: Surreal 20.2%, Horror 17.4%, Psychological Horror 16.1%, Retro 13.3%, Walking Simulator 8.8%

Why You'll Like It: This short, ugly, dreamlike horror game shares Mouthwashing's fragmented storytelling, low-poly grime, and constant sense of wrongness.

Event[0] is a sci-fi narrative exploration game where you build a relationship with a lonely spaceship computer to get home to Earth.

Why similar: Psychological 22.3%, Walking Simulator 21.5%, Space 14.5%, Mystery 9.2%, Atmospheric 7.7%

Why You'll Like It: This is a quieter but extremely effective space-isolation narrative about being alone with something unknowable on a derelict vessel.

You are trapped in an endless underground passageway. Observe your surroundings carefully to reach "The Exit 8".

Why similar: Psychological Horror 22.5%, Walking Simulator 18.9%, Horror 14.1%, Psychological 12.8%, Surreal 11.1%

Why You'll Like It: Its mundane-space nightmare design and subtle environmental dread scratch the same 'something is deeply wrong here' itch despite being more minimalist.

The Station is a first-person sci-fi mystery set on a space station sent to study a sentient alien civilization. Assuming the role of a recon specialist, players must unravel a mystery which will decide the fate of two civilizations.

Why similar: Walking Simulator 26.9%, Space 17.9%, Story Rich 17.4%, Atmospheric 12.1%, Indie 7.3%

Why You'll Like It: It offers first-person exploration of a deserted space station with environmental storytelling and a creeping, intimate sci-fi mystery.

A reverse-detective adventure, where you control your character's face

Why similar: Psychological Horror 33.3%, Surreal 22%, Horror 20.5%, Story Rich 11%, First-Person 7.1%

Why You'll Like It: Its disturbing character drama and sense that human interaction itself is contaminated make it a great fit if Mouthwashing's interpersonal horror hit hardest.

"I need a Heart in order to open it"

Why similar: Psychological Horror 28.4%, Horror 20.4%, Dark 9.5%, Surreal 9%, Retro 6.9%

Why You'll Like It: It uses stripped-down retro horror and reality-bending tricks to create the same deeply personal, unstable kind of fear.

A horror game about claustrophobia. During a storm your service dog is forced down a broken sewer drain. You find the nearest sewer entrance and run in after it. Along the way you will meet others that are also stricken by abnormal or psychological fear.

Why similar: Psychological Horror 25.8%, Psychological 16.9%, Horror 15.2%, Surreal 10.8%, Retro 9.9%

Why You'll Like It: It trades space for urban decay, but its PS1-style visuals and intense psychological descent feel very adjacent in texture and menace.

Hearing noises? Seeing things? Call Home Safety Hotline! Our operators are standing by, waiting to give you the answers you need to protect your home from all manner of pests and household hazards.

Why similar: Horror 38.9%, Psychological Horror 32.8%, Atmospheric 14.9%, Mystery 13.3%

Why You'll Like It: Its retro framing and steadily escalating psychological discomfort make it a great pick if you want more uncanny narrative horror with a distinctive voice.

An immersive first-person horror adventure where you play the role of LIANA - a young girl who arrives home after major surgery and is met with a strange mannequin claiming to be her mother.

Why similar: Psychological Horror 24.1%, Narrative 17.8% ★, Surreal 16.6%, Horror 12%, Dark 10.9%

Why You'll Like It: This is another claustrophobic, surreal, narrative-heavy horror game where domestic conversation curdles into bodily and psychological unease.

Tacoma is a sci-fi narrative adventure from the creators of Gone Home. Set aboard a high-tech space station in the year 2088, explore every detail of how the station’s crew lived and worked, finding the clues that add up to a gripping story of trust, fear, and resolve in the face of disaster.

Why similar: Walking Simulator 30%, Space 14.8%, Story Rich 14.4%, Narrative 7.5% ★, Mystery 7%

Why You'll Like It: It is not as horrific, but its empty-space-station setting and emphasis on reconstructing a crew's final days strongly overlap with Mouthwashing's appeal.

Placed in a world without change, you must create fate by watering an ancient plant. Determine a future and live with it.

Why similar: Retro 18%, Surreal 17.9%, Psychological Horror 16.4%, Horror 11.8%, Atmospheric 10%

Why You'll Like It: This strange first-person retro horror captures the same surreal, symbolic, low-fi dread that makes Mouthwashing linger in your head.

A first‑person cyberpunk horror detective story set in a decaying, neon‑scarred future. As an Observer who invades minds to hunt for clues, you will sift through corrupted memories to track down a mysterious killer and confront your own dark past.

Why similar: Psychological Horror 23.9%, Walking Simulator 22.6%, Horror 18.7%, Surreal 16.2%, Story Rich 11.3%

Why You'll Like It: It offers grim first-person sci-fi horror, invasive psychological imagery, and a world where bodies and minds are equally unsafe.

Detention is an atmospheric horror game set in 1960s Taiwan under martial law. Incorporated religious elements based in Taiwanese/Chinese culture and mythology, the game provided players with unique graphics and gaming experience.

Why similar: Psychological Horror 23.3%, Horror 21.2%, Story Rich 8.3%, Thriller 8%, Atmospheric 7.7%

Why You'll Like It: It is heavier on folklore and 2D exploration, but the suffocating atmosphere and trauma-driven horror align well with Mouthwashing's tone.

WARNING. Stay inside. Lock your doors. Close the blinds. Only let humans in. Eliminate all Visitors. An anxiety horror about paranoia in the End of Times.

Why similar: Psychological Horror 16.8%, Horror 11.2%, Psychological 11.1%, Narrative 10.4% ★, Gore 9.1%

Mundaun is a lovingly hand-penciled horror tale set in a dark, secluded valley of The Alps. Explore various areas full of secrets to discover, survive hostile encounters, drive vehicles, fill your inventory, and solve a variety of handcrafted puzzles.

Why similar: Psychological Horror 17.2%, Walking Simulator 16.7%, Thriller 10.4%, Surreal 10.2%, Horror 10.2%

Why You'll Like It: Its indie roughness, oppressive atmosphere, and slow-burn first-person horror make it a strong fit for players who valued mood over jump scares.

A dark/sad/weird/funny first person exploration game. You play a man on his last night alive as he obsesses over a mysterious painting. More of a story game in that it emphasizes mood and character over gameplay. Takes ten minutes to play and has "next-gen" features like a shrimp tank.

Why similar: Psychological Horror 33.6%, Horror 17.6%, Walking Simulator 15.6%, Dark 13.4%, Surreal 5.2%

Why You'll Like It: This short narrative horror piece shares Mouthwashing's fascination with alienation, mental unraveling, and unsettlingly direct storytelling.

The Cat Lady follows Susan Ashworth, a lonely 40-year old on the verge of suicide. She has no family, no friends and no hope for a better future. One day she discovers that five strangers will come along and change everything...

Why similar: Psychological Horror 22.6%, Horror 17.7%, Psychological 14.3%, Story Rich 11.4%, Surreal 10.2%

Why You'll Like It: This is another bleak, story-rich psychological horror game that focuses on damaged people, discomfort, and emotional collapse over conventional action.

ROUTINE is a First Person Sci-Fi Horror set on an abandoned lunar base designed around an 80s vision of the future. Explore and investigate your surroundings as you survive against unknown threats.

Why similar: Psychological Horror 20.1%, Walking Simulator 13.3%, Thriller 12.1%, Horror 10.5%, Dark 10.2%

Your task is simple, exterminate all vermin. The sledge hammer you have been provided is capable of destroying almost all office appliances and furniture that may be uncooperative. Your time is running out.

Why similar: Psychological Horror 23%, Surreal 17.3%, Horror 14.9%, Dark 11.4%, Gore 7.7%

Why You'll Like It: It is brief and more abstract, but its ugly body-horror imagery and escalating psychological disgust fit Mouthwashing's nastier side.

Longing for light, a sunless world begins devouring itself. Every step shifts the landscape beneath you as you search for what remains of her.

Why similar: Psychological Horror 17%, Walking Simulator 14.2%, Surreal 12.8%, Thriller 11.2%, Horror 9.7%

A local news team breaks into an abandoned house to chase a salacious ghost story... until a MANIAC chases them! ...VHS era 80's slasher. PS1 style survival horror!

Why similar: Psychological Horror 25.2%, Horror 24.4%, Retro 19%, Gore 18.9%, Psychological 6.4%

Why You'll Like It: Its retro visuals, grime, gore, and low-budget nightmare energy make it a good lower-ranked pick if you mainly want Mouthwashing's aesthetic harshness.

A first-person narrative adventure game about exploring a cult compound in the remote New Mexico desert. Discover the lives of the former inhabitants -- what brought them together, what they believed, and why they ended it all.

Why similar: Psychological Horror 26.8%, Gore 21.2%, Walking Simulator 19.8%, Story Rich 10.1%, First-Person 7%

Why You'll Like It: This is a story-first first-person exploration game steeped in regret, isolation, and human ruin rather than combat or puzzles.

In a lonely station atop a mountain, a train rumbles its precious cargo to places unknown. Now is your shift. Keep the pace. Uncover a mystery. Fight for your last breath. The air is thin up here.

Why similar: Psychological Horror 16.9%, Walking Simulator 13%, Horror 10.7%, Surreal 9.7%, Thriller 9.2%

Five scary stories, but they all have the same ending. Can you play it? A psychological horror game from the first person, which few will pass.

Why similar: Psychological Horror 16.7%, Gore 12.6%, Walking Simulator 11.5%, Horror 10.2%, Thriller 8.5%

Pilot the MOLE, a monstrous post-war drilling machine built to descend deep below the Slavic soil. Fix failing systems, follow voices of the dead, and pray you can survive whatever is sharing your coffin. Will the vessel or your mind break first?

Why similar: Psychological Horror 27.2%, Horror 17.4%, Retro 13.7%, Surreal 11.5%, Dark 9.1%

Dire Echo is a psychological horror walking simulator that immerses players in the eerie and oppressive atmosphere of abandoned deep space.

Why similar: Psychological Horror 16%, Walking Simulator 15.8%, Thriller 15.8%, Horror 9.6%, Space 9.1%

Stranded in the desert, your only hope of escaping rests in a strange Catman. His one request: hunt down surreal creatures, skin them, and chop them up so he can keep them as trophies.

Why similar: Psychological Horror 16%, Psychological 12.9%, Gore 11.2%, Horror 9.3%, Surreal 9%

You are wetware, working a mysterious job.

Why similar: Psychological Horror 20%, Walking Simulator 15.9%, Psychological 14.8%, Surreal 12.8%, Horror 11.6%

A short horror game where you control a decaying spacecraft exploring distant star systems.

Why similar: Horror 30.3%, Space 25.4%, Retro 24.7%, Exploration 7.5%, Dark 6.2%

First-person psychological horror where the elevator is the only safe place. Each floor is a new reality. Each floor has a new inhabitant. Find it to continue your descent downward.

Why similar: Psychological Horror 21.6%, Gore 15.7%, Horror 11.9%, Walking Simulator 10.9%, Thriller 7.5%

An existential horror game in which you are tasked with keeping a sleeper colony ship intact. No enemies or NPCs share the ship with you - only creaking metal echoes and endless dark. Overcome random events, system failures, and the downward spiral of your sanity to see your mission through.

Why similar: Psychological Horror 40.8%, Dark Humor 19.7%, Story Rich 17.4%, Atmospheric 13.6%, Space 8.5%

Isolation. Hopelessness. Starvation. By the will of an unknown force, you find yourself isolated from the outside world. Now you are doomed to starve to death. No one will come to your aid. No one will hear your prayers.

Why similar: Walking Simulator 30.7%, Psychological Horror 21.1%, Gore 14.6%, Horror 12.4%, Exploration 6.9%

First Person Psychological Horror. Addicted to virtual ecstasy, trapped in digital hell. Navigate glitchy dreamscapes and a city that never sleeps. Every mission brings you closer to your next dose, but will you follow your protective AI, or the man behind a liberating new drug?

Why similar: Psychological Horror 12.9%, Psychological 10.2%, Gore 8.2%, Walking Simulator 8.1%, Narrative 7.7% ★

God's Basement is a first-person, narrative-driven, single player horror game. Uncover the secrets of an afterlife shrouded in mystery, as an entity known as "The Operator" leads you deeper into the fringes of a seemingly eternal purgatory.

Why similar: Psychological Horror 17%, Walking Simulator 12.9%, Psychological 12.3%, Horror 11.1%, Dark 8.3%

Luto is a psychological horror experience where you take on the role of someone unable to leave their home. Every attempt to escape will lead you deeper into the unknown, where nothing is as it seems and everything will test your senses.

Why similar: Psychological Horror 20.5%, Walking Simulator 15.3%, Psychological 14.3%, Thriller 10.3%, Dark 9.3%

"Psalm 5:9-13" is a first-person psychological horror game with VHS effect. Be careful and attentive, there is something hiding in these rooms, something is watching from the darkness.

Why similar: Psychological Horror 16.5%, Walking Simulator 11.5%, Gore 11.2%, Horror 10%, Thriller 10%

Step into a liminal, cosmic horror experience set in an abandoned amusement park. Uncover the haunting narrative behind its twisted rides and empty tunnels to discover what lurks within a reality that shouldn't exist…

Why similar: Psychological Horror 20.4%, Walking Simulator 14.9%, Horror 13.2%, Dark 9.9%, Psychological 8.7%

Share thoughts and hot food with your last ever clients, as you wait for the world to end.

Why similar: Psychological Horror 24.3%, Walking Simulator 18.8%, Horror 15.2%, Story Rich 9.4%, Thriller 7.9%

"The Last Visit: 98th" is a psychological indie horror from the first person, in the genre of a walking simulator, in the setting of the post-Soviet winter space. The main focus is on the atmosphere of horror, which is emphasized by realistic 3D graphics.

Why similar: Psychological Horror 19.1%, Walking Simulator 14%, Horror 13.3%, Gore 10.4%, Thriller 8.7%

Explore a cold, abandoned, and dreary facility to piece together its mysteries and find a means for escape from the horror that lurks within.

Why similar: Walking Simulator 23.5%, Psychological Horror 19.6%, Horror 18.7%, Atmospheric 12.4%, Space 9.3%

Quarantined inside an airlock. No memories. No way out. The remaining crew thinks there’s something wrong with you, but the Voice says it’ll help you escape. Navigate volatile conversations & unravel mysteries in this narrative adventure about trust, self-destruction, & shifting identities.

Why similar: Narrative 29.1% ★, Psychological 22.2%, Mystery 9.6%, Space 9.2%, Atmospheric 8.8%

Walking simulator. Explore, admire and listen. Uncanny. Relaxing. Unnerving. Eerie. Immersive. No monsters chasing you or jumping at your screen, but can feel oppressive at times by invoking fears of getting lost, the dark, tight spaces and liminal space architecture. Inspired by backrooms.

Why similar: Psychological Horror 28.3%, Walking Simulator 22.2%, Surreal 15.2%, Atmospheric 9.5%, Dark 6.2%

It started in your foot. Now it’s in your head. All that remains is the command: GO UP. Meet strange neighbors. Make bad trades. Every ascent teaches you what you should have done differently.

Why similar: Psychological Horror 20.6%, Narrative 15.4% ★, Horror 12.1%, Retro 10.6%, Dark Humor 9.3%

Eggs: perfection in two parts. The simple whites. The sublime yolk. Each the lesser without its partner. Chorus and verse. A symphony of flavor. The catchy tune reminding us of warm baths and late-night movies. The elevator music to whatever lies beyond.

Why similar: Surreal 33.3%, Horror 18.2%, Atmospheric 15.4%, Story Rich 13.1%, First-Person 11.6%

You are trapped on a train that runs forever. Keep an eye out for anomalies and find a way out.

Why similar: Psychological Horror 29.6%, Walking Simulator 22.4%, Horror 10.9%, Dark 8.7%, Surreal 7%

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: Psychological Horror 18%, Horror 10.7%, Retro 9.2%, Surreal 8.1%, Dark 7.5%

Explore a strange world full of colorful friends and foes. When the time comes, the path you’ve chosen will determine your fate... and perhaps the fate of others as well.

Why similar: Psychological Horror 52.3%, Story Rich 19.4%, Horror 14.3%, Atmospheric 6.2%, Indie 4.9%

CoRoT is a first-person psychological meta-horror game. Search for cassettes in a transforming house, unraveling its macabre past. A sinister atmosphere surrounds you as you try to understand what's happening and where you really are. Can you discover the truth hidden in its walls?

Why similar: Psychological Horror 19.4%, Surreal 13.4%, Walking Simulator 11.8%, Horror 10.3%, Thriller 9.7%

Stranded on a desolate island with Earth's remaining researchers, you investigate a strange celestial body. The day before departure, your only means of transportation gets mysteriously damaged, leaving you stranded. Is someone sabotaging the team, or is there something more sinister going on…

Why similar: Psychological Horror 21.7%, Surreal 14.5%, Thriller 14.3%, Horror 12.2%, Dark 10.9%