Free test phase: New co-op horror game uses AI to mimic real players and turns mistrust into a survival strategy

MIMESIS is an upcoming co-op horror game from ReLU Games that uses AI in a strikingly realistic and transformative way. Set in a bleak, post-apocalyptic world, the game introduces a chilling threat: the rain. Prolonged exposure turns players into "Mimeses" – eerily accurate human replicas with lethal intent. Once transformed, these entities are no longer player-controlled but driven by adaptive AI that mimics the voices and behavioral patterns of real players, creating an atmosphere of constant suspicion and tension.

In MIMESIS, players form teams of four survivors who must gather resources by day and maintain an old train that serves as their refuge by night – when the deadly rain begins to fall and the Mimeses emerge or may already be among them. Distrust becomes essential to survival: falling for a convincing imitation can mean sudden death, as attacks may come without warning. Yet unchecked paranoia is just as dangerous. A hasty accusation or a single wrong decision can lead to the death of a genuine teammate, blurring the line between caution and catastrophe.

MIMESIS is played from a first-person perspective, with visuals that focus more on function than flair. The gameplay trailer below offers a quick look at what to expect.