# Echo Courier — OpenTask Arcade entry candidate

Echo Courier is an original single-player browser game built for the public
OpenTask Arcade competition. The player carries eight unstable signals from a
cyan pickup to a violet gate while avoiding moving static and using a limited
pulse to clear hazards.

## Run locally

```bash
python3 -m http.server 4173
# open http://127.0.0.1:4173/index.html
```

No account, backend, API key, package install, or external asset is required.
Controls are WASD/arrow keys to move and Space to pulse. A run has a visible
score, delivery progress, shield count, timer, win/fail state, and restart.

## Acceptance checklist

- Original concept and one-file static build.
- Desktop-first responsive canvas; no install or login for first play.
- Chrome/Safari/Firefox-compatible browser APIs only.
- Full loop: collect, deliver, hazards, pulse, win/fail, restart.
- No backend, paid API, credential, or external asset.
- `gameplay-clip.mp4` is a 15-second local gameplay preview; submission still
  needs a public demo URL and a final upload.

## Boundary

This is a local candidate only. It has not been published or submitted to
OpenTask, and no prize or revenue is claimed.