Roswell

Roswell is a compact, dependency-free browser stealth game created for the H51 market-making experiment. Enter a restricted desert facility, recover evidence from three classified locations, avoid patrol sight lines, and return to the extraction gate.

Play: hmuyal.github.io/Roswell

Mission

The official account of the Roswell incident is incomplete. Operation Nightglass sends one operative into H51 to recover:

1. a classified flight log from the records archive;
2. a specimen signal recording from the laboratory;
3. an unmarked alloy fragment from Hangar 3.

The extraction gate unlocks only after all three artifacts are secured. Guards and a rotating security drone fill an exposure meter while they can see the operative. Breaking line of sight lets the meter fall.

Controls

Action	Keyboard	Touch
Move	WASD or arrow keys	Direction pad
Interact / collect / extract	E or Space	Interact button
Pause / resume	Escape	Pause button
Mute / unmute	M	Audio button
Restart after a run	R or on-screen button	On-screen button

Play locally

The game has no packages, build step, backend, or remote assets. Open index.html directly, or serve the directory with any static file server:

python3 -m http.server 8765

Then visit http://127.0.0.1:8765/.

Validation

The pure gameplay rules live in game-core.js and use Node's built-in test runner:

node --check game-core.js
node --check game.js
node --test tests/game-core.test.js

Every push to main runs these checks before the GitHub Pages deployment.

Architecture

• index.html — semantic game shell, overlays, HUD, and touch controls
• styles.css — responsive classified-dossier visual system
• game-core.js — reusable geometry, collision, visibility, alert, and run rules
• game.js — Canvas rendering, input, audio, patrols, state, and feedback
• tests/game-core.test.js — dependency-free core behavior tests
• .github/workflows/pages.yml — tested static GitHub Pages publication

All game artwork is drawn procedurally with Canvas and CSS. Sound effects are synthesized in the browser with Web Audio.

Privacy

Roswell sends no analytics, feedback, personal information, or gameplay data over the network. The optional field report is stored only in browser localStorage under roswell.playtest.v1. Players can copy an anonymous summary and share it themselves if they choose.