DEAD AIR

A first-person cave-horror game for the terminal. You are a search-and-rescue officer entering an unsurveyed sink in Piney Ridge National Park, nineteen hours behind a solo caver who did not come out.

It opens above ground. You have one evening of light to walk the approach, read the ground, and talk to the people who saw Wren Alcott last — and then you go down the hole.

Every room draws itself. The scenes are raymarched at runtime and lit by your actual lamp, so the picture loses reach and detail as the cell dies, for the same reason the prose does.

Built with Textual, so it runs anywhere Python 3.12 does — Linux, macOS and Windows, in a local terminal, over SSH, or inside tmux.

Every room is drawn to whatever the terminal can manage. The kitty graphics protocol gives the sharpest picture — kitty, Ghostty, WezTerm and Konsole speak it; terminals with sixel get that instead; everything else falls back to Unicode half-blocks, which is just text and works everywhere, including the plain Windows command prompt. It looks best in a terminal that can draw and it plays fine in one that can't.

Install

Needs Python 3.12 or newer. pipx is the tidiest way — it keeps the game and its dependencies in their own environment and puts deadair on your PATH:

pipx install git+https://github.com/AustinGuidry/dead-air

Or with plain pip, ideally into a virtualenv:

pip install git+https://github.com/AustinGuidry/dead-air

Then, from anywhere:

deadair

Pass --seed N to fix the run's coin-flips — the same seed always gives you the same cave noises. --help lists the options.

Updating

PyPI does not push updates — you pick them up when you ask for them:

pipx upgrade deadair          # or: pipx upgrade-all
pip install --upgrade deadair  # if you used plain pip

Once a day, on startup, the game quietly asks PyPI whether there is a newer release and caches the answer; if you are behind, the menu says so and tells you the command. The check runs on a background thread, times out fast, and fails silently when you are offline. Set DEADAIR_NO_UPDATE_CHECK to any value to turn it off. Running from a clone never checks.

Running from a clone

If you would rather have the source to hand:

git clone https://github.com/AustinGuidry/dead-air
cd dead-air
python3 -m venv .venv
.venv/bin/pip install -r requirements.txt
./play

Controls

F is for above ground — you start in daylight with the lamp off, and the evening does not wait for you. D and C are underground only, where the lamp is not something you get to switch off.

Saving

The game opens on a menu — resume, new run, controls, quit — and saves itself after every action, so quitting and closing the terminal are the same thing as putting it down. There is one slot and it is the run you are in. Finishing a run, however it finishes, clears it.

The file goes wherever your machine keeps application state: on Linux ~/.local/state/deadair/save.json, on macOS ~/Library/Application Support/deadair/save.json, on Windows %LOCALAPPDATA%\deadair\save.json. Setting XDG_STATE_HOME overrides all three. Deleting the file is a supported way to start over.

Take your time in the first few rooms. The cave teaches you what it wants before it asks you for anything.

You cannot see everything in the park before the light goes, and that is the point of the park.

Design notes

Mechanics, escalation, module layout, and tuning constants are documented in DESIGN.md — that file spoils the game, so read it only if you are here to work on the code rather than to play.

RELEASING.md covers cutting a version. It does not spoil anything.

License

MIT — see LICENSE.