You are alone in an abandoned World War I bunker with only one bullet left in the chamber. It's up to you to face the terrors lurking in the dark. Keep the lights on at all costs, endure, and make it out alive. An intense horror experience awaits.

Immerse yourself in the struggle for survival with multiple approaches. As French soldier Henri Clément, you are equipped with a revolver, a noisy dynamo flashlight, and scarce resources you'll need to scavenge and craft along the way. Thanks to randomization and unpredictable behavior, no two playthroughs will be the same.

Hunted by a relentless threat that reacts to your every move and sound, you must adapt your playstyle to confront the nightmare. Every decision you make will alter how the game responds. Remember, your actions have consequences, and time is not on your side.

Tackle problems your own way in a semi-open world. To escape, you must explore and experiment. Interact physically with your environment, gather resources, and craft tools to aid your survival. Figure out what happened here: What became of the other soldiers? Where did the officers go? What unholy nightmare lurks beneath this hellscape? Uncover the mysteries of the bunker and learn every corner of this brutal sandbox to improve your chances of survival.