Top similar games like HAL Protocol:

This is an indie horror game with first-person puzzles. Terror and fear have enveloped the city. The maniac has returned. You sneak into his lair to try and stop him before he goes too far...

WriteNor is a psychological meta-horror where the terminal is your only weapon. Trapped in a corrupted office, you rewrite reality with commands while NORI - a rogue AI - watches your every step.

A first-person anomaly-detection horror game set in a bar that never lets you leave. Spot what changed, not what Raz wants you to see. Choose forward or back and survive 11 escalating trials while he watches your every mistake.

You are trapped in a looping indoor swimming pool. Inspect the pool carefully and decide whether it is safe or not. If anything feels strange, get out. Now!

An alien hides among the pigs. Can you spot the imposter before it's too late? A tense observation horror game inspired by The Thing, where every oink could be your last.

You are a participant in Project Threshold, an experiment designed to force people to confront their deepest fears. Pass through sets of blue and red doors, survive what waits beyond them, and reach the end, if escape is even possible.

You find yourself lost in a place that shouldn’t exist. Everything feels off — the silence, the looping spaces, the emptiness around you. Instinctively, you begin documenting it all. Liminal State is the beginning of something larger, something unknown — and it all starts here.

Anant Express is set aboard a haunted sleeper-class indian train. You board the train as an ordinary traveler, but as the journey progresses, strange events begin to unfold. Mysterious passengers. Shifting compartments. Whispers in the dark. Nothing is as it seems.

Paper Department is a psychological horror game in which you are a night-shift clerk working at a sinister paper company, who must approve or reject never-ending stacks of documents—while pursued by horrific visions, nightmare memories, and a mind that cannot be trusted.

"Anomaly Road" is an escape game set on a mountain road in Japan, combining horror, driving, and strange occurrences. While driving, you suddenly realize you've gotten lost on a road deep in the mountains. As you turn a corner with a bad feeling, what awaits you...?

Step into the endless corridors of learning and unease in Through the Chalk Dust — a psychological walking-simulation puzzle inspired by looping-environment horror. You wander from classroom to classroom, each one almost identical to the last. Almost.

Someone slipped a mysterious videotape under your door... Do you dare watch it?!

Sector 404 is a first-person anomaly horror game set in a crumbling Soviet housing block. After taking your medicine, your world begins to fracture. Climb from floor to floor, uncovering distorted anomalies and your own unraveling mind. Miss too much, and reality resets. Will you ever make it home?

The corridor looks the same every time. But does it really? Maybe something has changed. Observe your surroundings carefully.

"Mannequin machine" is a first-person psychological horror game with camera effects that tells the story of working in a mannequin factory. Beware of the evil at the heart of the plant, it drives its victims crazy

A stalker is terrorizing the neighborhood, and you’re next. Watch for signs he’s been inside your house and make the right choices to avoid becoming his next victim. Test your observation skills in this Exit 8-style game where the threat isn’t supernatural, but a real man and you have three choices.

You're trapped in the seemingly endless corridors of a space station, desperately searching for the evacuation bay 09. But the station is not as empty as it seems; you must observe for subtle, unsettling occurrences and log them if you want to move forward. Can you break the loop and escape?

You find yourself in a quiet room with four doors. There's ALWAYS an anomaly. Choose wisely.

You are heading down an endless corridor in search of a missing child. Pay close attention to your surroundings to find clues about the child, and find a way to escape the dark, confined corridor.

Nightmare Within - Immerse yourself in the dark and unsettling atmosphere of psychological horror. Explore shifting locations, uncover fragments of memories, and reveal a story where reality fractures under the weight of guilt.

Prison of Nightmare is a first-person psychological horror game that immerses players in a haunting and oppressive atmosphere. The game revolves around an ancient dark entity, a malevolent spirit that invades the protagonist's dreams, aiming to terrorize and eventually capture their soul.

You have been sent photographs of a place where, according to rumors, an artifact of an ancient civilization is hidden... Do you dare to go there?!

A man who has lost his wife and seeks to escape loneliness and grief begins working as a firewatch in a forest. He meets a girl named Sarah and encounters strange occurrences while uncovering deep family secrets. He learns that not every voice is human and not every farewell signifies an end.

Your job at the Cabin Factory is simple: inspect the cabins and decide on whether they’re haunted or not. If you do find any anomalies, get out…immediately.

The Profaned is an Anomaly-Hunt horror game about a person who's trying to cleanse his sins. The primary task is to investigate the endless forsaken church to find the anomalies and capture them with your camera to cleanse your sins. And if you fail to do so, start again from the beginning.

Angstraum is an oppressive horror game that traps you in a threatening, never-ending loop. Observe your surroundings, uncover deviant anomalies, and escape deadly threats to find the exit.

You are trapped in the Office. A first-person Observation-Game about walking an endless office, spotting anomalies, and getting off work.

Room 404 repeats. Identify anomalies, file reports, and stay alive—some anomalies might hurt you. Nurture the plants, listen to the overlord, end the loop, and unlock multiple unique endings.

You have arrived in a forest where people are rumored to disappear and strange things happen... Locals often see bright flashes and hear strange sounds...

Remote Position is a single-player horror story where you must follow strange tasks given to you by your new remote supervisor. The tasks launch you deep into a mysterious rabbit hole left by your late father. The gameplay includes puzzles and action sequences where you need to think quick!

A first-person psychological horror game about the crushing weight of guilt. Live through the aftermath of a devastating tragedy: your wife is dead, and it’s your fault. But when her casket is brought home, something inexplicable and terrifying begins to warp your reality...

Callus is a story about coldness, overprotection, and indifference. It can turn your soul inside out and crawl under your skin, leaving a lasting mark. Or it may simply pass you by. It all depends on where you choose to look… and what you are willing to see.

Forced into working as an Anomaly Observer in a space stockroom, you must explore, observe carefully, and report inconsistencies. Earn Credits to buy upgrades, but beware: hideous horrors are creeping in the dark.

Christmas Nightmare is an atmospheric horror game about New Year's Eve.

Trapped inside an experiment with no memory of how you arrived, your only way forward is an elevator. Observe each floor carefully, separate reality from anomalies, and make the right decisions to reach the top and escape.

Welcome to the company.Your task is to detect and report any strange occurrences happening around you.If you successfully complete all reports for 8 days without mistakes, you will achieve your goal.Observe carefully and endure until the end.