MIMESIS Introduction

MIMESIS

An AI powered co-op horror experience 
where trust is your only weapon and your greatest weakness

<MIMESIS> is a co-op survival horror game where up to four players explore abandoned zones, gather resources, and fight to stay alive. But hidden among them is a mysterious mimesis masquerading as a human, blending seamlessly into the team. Every session becomes a unique mix of psychological tension and teamwork, where laughter can turn into paranoia at any moment. Unpredictable dynamics driven by AI make each playthrough feel fresh, unsettling, and intensely engaging.

#SocialDeduction #FindTheMimic #Paranoia #PsychologicalHorror #DistrustAndSuspicion #VoiceAndBehaviorMimickingAI

Overview

DEVELOPER - ReLU Games

PUBLISHER - ReLU Games

GENRE - Co-op Horror, Survival

PLATFORM - PC(Steam)

LAUNCHING - Oct. 2025

LANGUAGES (11) - English, Chinese (Traditional), Chinese (Simplified), Japanese, Portuguese (Brazilian), Russian, French, Italian, German, Korean

Story

The world fell to ruin under a maddening rain that came with the darkness.Those who were exposed to it turned into terrifying beings called mimesis, creatures that perfectly mimic human appearance, behavior, and even voice. As trust shattered, society collapsed almost overnight.

You are one of a few survivors, traveling aboard an old tram. It’s the only way to escape the rain and the Mimesis, but it won’t keep moving unless it’s regularly repaired.

To stay alive, you and your team must venture into dangerous areas to gather the resources needed to keep the tram running. But wherever resources are found, danger is never far behind.

Mimesis are out there, hiding, waiting. Collect what you can, survive as long as possible, and never stop questioning whether your companion is truly who they say they are.

Gameplay Loop

The core game play for players is to collect resources as a team within limited rounds and use them to repair the tram in order to continue surviving.

The game revolves around a cycle of resource collection and tram maintenance. If you fail to gather enough materials during the three resource collection rounds, the tram will break down and no one will survive.

Each location the tram arrives at presents different levels of danger, contamination, and available resources. You must choose between two possible destinations, then venture out to gather as much as you can and return to the tram in one piece. Abandoned buildings hide unseen threats, and Mimesis may appear at any moment, targeting you and your team. Once midnight strikes, a deadly downpour begins, and anyone not back on the tram will be left behind. If every player dies during a collection round, all gathered resources will be lost, so caution is essential. After three collection rounds, the tram arrives at a repair station. You must use the resources you've gathered to fix it. If the repairs are successful, the journey continues and so does your fight to survive.

Features

Cooperation is the key to survival

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Up to four players must work together to repair the tram, gather resources, and stay alive.

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As long as at least one player survives, most of the collected resources can be carried into the next round. But if the team is wiped out, all resources are lost.

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Each player can only carry a limited amount of resources, making strategic planning and sharing essential for survival.

Where fear and laughter collide

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The more contaminated and dangerous the area becomes, the higher the chances of finding rare resources. But surviving in these zones is significantly more difficult.

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Each round unfolds on a procedurally generated map, adding a constant sense of unpredictability and tension.

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Players often find themselves laughing in unexpected situations, only to later realize that the teammate laughing beside them was actually a Mimesis. That moment turns lighthearted fun into a chilling twist.

Psychological survival powered by AI

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Mimesis is not just an entity that mimics basic actions.

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It learns players' tone of voice, reactions, and behavioral patterns. The AI speaks like a person, moves like a person, and blends seamlessly into the team.

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By learning from gameplay data, it behaves in ways that closely resemble real human players. This forces players into constant psychological reasoning, wavering between  trust and suspicion, and creates a deeply immersive and  uniquely thrilling experience.

And AI

Going beyond traditional behavior trees (BT), our AI system is designed with precise control and context aware logic that enables realistic variations in both behavior and voice responses.

During gameplay, the AI subtly encourages players to question whether a teammate is truly human. This creates a constant need for situational judgment and deduction, drawing players into a deeply immersive experience.

The AI is not a simple background system. It functions as a deliberate variable that builds tension and encourages suspicion. It becomes a psychological presence that continuously challenges players to decide whom to trust and when to exclude someone from the group.