TO SEE, YOU MUST SPEAK. TO SPEAK IS TO BE FOUND.

There is no light down there. There is only sound. Every sound sends out a wave. It spreads from you and tears the world out of the dark for a second — walls, corners, your crew, and whatever is standing between you. The wave dies. The dark comes back. Your voice is your flashlight. It is also your trail.

LOUDNESS IS A TRADE

A whisper lights a couple of metres. A scream lights half the floor. Everything hunting down there hears exactly the same thing. A footstep, a dropped crate, a slammed door, a shriek of panic — all of it travels the same way. There is no harmless noise here.

THIS IS THE ONLY WAY YOU SEE EACH OTHER

Your crew's waves light the way for you. Split into different wings and you work blind, hearing each other over the radio and guessing from distant flashes who is still alive. A silent crew is invisible to the monsters. And to itself.

THE SHIFT

Take a contract, ride the lift down, do the work, get back before the shift ends. Haul out the Core. Recover the bodies of the last crew. Shut down the machines that light the floor and cover your footsteps — and finish the job in total darkness. The level is built from scratch every descent. The deeper you go, the better the pay and the worse your odds. Between runs there is the shop: radio, foam gun, wrench, tripwires, door wedges. Everything comes out of the team's bank. Everything you fail to carry into the lift is gone.

WHAT LIVES DOWN THERE

Most of them cannot be killed. They can be heard, avoided, jammed for a few seconds, shut behind a door and wedged in. One of them only moves while you are making noise. One will speak to you in your teammate's voice. One will make you see a monster where your friend is standing — and you will swing first.

WHAT YOU NEED

A microphone — required. This is not voice chat, it is the core mechanic. Headphones — required. The audio is positional, and speakers will give you away with your own voice. 1–4 players. You can go alone, but alone there is no one to hear you.