The vault will not accept the current you as a power source. Walk onto a lower-case signal node, anchor a frozen echo, then use the reset present-self to cross the matching upper-case gate. Each chamber asks you to sustain more impossible versions of yourself at once.

Play

This project is fully static and has no package installation or build step.

cd /root/vanta-relay-20260727-095415
python3 -m http.server 4173

Then open http://127.0.0.1:4173.

WASD or arrow keys: move
Space: anchor an echo while standing on a lower-case node
Z: remove the most recently anchored echo
R: reset the current relay
M: toggle synthesized audio
H: show the protocol card

The on-screen D-pad and buttons provide touch/click alternatives.

Design

Three authored chambers — from one echo to three simultaneous signal witnesses.
Actual game rules, separate from rendering — game-engine.js is a deterministic, DOM-free state model.
Pseudo-3D canvas world — an isometric grid, extruded null-walls, glowing gates, particles, animated portal rings, and procedural starfield; no images, fonts, CDN, or network runtime calls.
Accessible controls — semantic buttons, canvas label, visible objective/status readouts, and keyboard controls.
Optional local progress — the highest unlocked chamber is stored locally only when browser storage is available.

Verify

Node 22+ is sufficient; there are no dependencies to install.

npm test
npm run check

The suite covers engine behavior, invalid maps, closed-gate negative paths, echo capacity/undo/reset, authored-map reachability, staged gates, and a static zero-external-asset shell check.

Project map

index.html       interface, responsive chrome, and inline style system
app.js           canvas renderer, controls, particles, audio, smoke-test surface
game-engine.js   deterministic relay state machine
levels.js        authored chambers plus graph reachability helper
tests/           Node test suite

No credentials are stored in this repository.