Top similar games like Mortanum:

This game requires you to become an electrician and replace all the lights in each place... WHILE BEING CHASED BY MONSTERS!

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.

A short horror game where you pilot a submarine to collect samples on the crushing depths of the ocean.

You are sentenced to 30,000 hours in prison. Earn your freedom by identifying and reporting spam.

Implements of Hell is a first-person psychological horror game. Explore the mysteries, unlock the secrets, and change the outcome in a slow-paced atmospheric, and extremely horrifying experience.

You just want to play a video game in an old game club, but time passes quickly, and strange noises draw you into a dark nightmare! A nightmare that begins with an old video game... Are you ready to experience a 2D platformer game within the heart of a 3D first person psychological horror game?

Layers of Fear is a first-person psychedelic horror game with a heavy focus on story and exploration. Players take control of a painter whose sole purpose is to finish his Magnum Opus. The player must navigate a constantly changing Victorian-era mansion and ghastly visions of the painter’s psyche.

What is inside the Red Fridge? Collection of six episodes of psychological analog horror. Tour through liminal spaces filled with surreal events and uncanny strangers. Inspired by retro horrors of the PSX era.

In the end, everybody gets what they deserve. The sins of the past always manifest within the minds of the sinners. An eternity of suffering awaits, welcome to The Survey.

From the creators of Amnesia: The Dark Descent and Dear Esther comes a new first-person horrorgame that will drag you to the depths of greed, power and madness. It will bury its snout into your ribs and it will eat your heart.

Among the Sleep: Enhanced Edition is a new and improved version of the award winning first person horror adventure. In the game you play as a small child trapped in a weird nightmare where you go looking for your mom.

A lightweight psychological horror and a walking simulator, where the player needs to carefully observe the surroundings to succesfully flee from this wretched place.

Set in a creepy amusement park hiding a dark and sinister secret, The Park is a first-person psychological horror experience focused on exploration and storytelling.

A teenage girl and the vengeful ghost possessing her stumble onto horrors of cosmic proportions as the latter searches for a way to murder the former.

How long has it been? A man sits in a distant getaway cabin waiting for his wife Serena. Where is she? Things in the cabin evoke memories, and the husband comes to a disturbing realization... This short point-and-click adventure is the result of a massive collaborative effort between dozens of fans and designers of adventure games.

A routine spacewalk procedure traps you in an endless loop. Observe the spaceship carefully, detect anomalies, and choose the right path to reach the airlock and escape.

Narrative-driven first person horror adventure inspired by Lovecraft's short novel "The Nameless City". Explore the ruins of a city that some say they are older than humanity itself. While you delve deeper into the ancient buildings, reality and visions blend into an indistinct haze.

A free short first-person horror game of dream puzzles - unsettling, surreal, and hauntingly atmospheric.

A psychological horror walking simulator set in an endless flooded pool. Explore liminal corridors, notice subtle anomalies, and endure the growing tension as you search for an escape.

You overslept at work, and when you woke up, everyone was already gone. The office is eerily empty, and strange anomalies seem to have taken over. Explore the office, gather your 29 items, and go home.

A first-person horror game about a janitor, whose day turns stranger by the minute. This game features some random events, that make every playthrough slightly different.

From the darkness is a psychological horror game with a scary atmosphere, the game takes place in an old Soviet abandoned apartment.

Awaken as a fragmented soul in a first-person, psychological horror nightmare. With minimal hand-holding, evade the relentless Shepherd and wield the Spirit Catcher to survive. Inspired by classic, difficult games, uncover the terrifying truth of this fractured realm.

A short, first-person horror game where you play as a desperate man seeking a cure for his sick wife in a mysterious vineyard. Harvest, crush and ferment grapes as you uncover the secret beyond the basement doors.

The Sweet Spot is a cozy horror game where you work the last shift at an 80s ice cream shop. Make ice cream, serve customers and watch out for strange things.

An atmospheric horror, exploration and automation game all set in the dim halls of an apartment building

You are an Earworm. You are an underworld contractor who hacks memories for a living.  Dive into the memories of your victims in order to unlock the security questions to their bank account. 

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.

A psychological horror game, where you are trapped inside a constantly shifting mansion and each step is accompanied by an eerie melody. Explore the mansion, uncover the tragic past, escape the house or confront the spirit.

Mimic Search is a short indie horror game, in which you take the role of a police officer investigating a recent mimic attack.

Having done some terrible things in his youth at school, his memories call Bart Blake back to that place, in his nightmares.

Escape the snowy nightmare or be trapped forever — your call.

Lured to a remote island, you find yourself confined within the rooms of an ominous mansion. You must draw upon all your puzzle-solving ability to navigate a series of trials devised by a mysterious figure known only as “The Craftsman”. Do you have what it takes to escape?

Keep in Mind follows Jonas, a man haunted by alcoholism, depression, and grief. One night, he awakens to a shadowy mirror world where beasts lurk and stars don't shine. Lost and scared, Jonas must face the twisted beasts if he ever wishes to return home and learn the truth about his darkness.

What Remains of Edith Finch is a collection of strange tales about a family in Washington state. As Edith, you’ll explore the colossal Finch house, searching for stories as she explores her family history and tries to figure out why she's the last one in her family left alive.

How might life inside Artificial Intelligence be like? Is it possible to stop this painful routine? This life even real or not? Try your luck...