Neon Voyage

Play Neon Voyage in your browser: a free pixel-art rocket game for phones, tablets and computers. No download, no account.

Fly a small, quick neon rocket side to side through an endless asteroid field. It leans into every turn and breaks apart when it hits. The asteroids keep speeding up for as long as you last, until nobody can keep up, and every near miss makes them faster still and multiplies your points. Collect lines of shards, and grab shields, boosts and novas. The asteroids knock each other about, and every so often a meteor storm rolls in.

Controls

Device	Steer	Other
Computer	Left and right arrows, or A and D	Any key plays again after a crash; P or Esc pauses, M turns sound off and on
Phone or tablet	Hold the left or right side of the screen	Tap to play again; pause and sound buttons in the corner
Gamepad	Left stick or d-pad, left and right	A starts, Start pauses

Made with Pixelbolt

Every sprite, effect and letter is a Pixelbolt recipe in art/, written by an AI agent that inspected each render and fixed it, the way Pixelbolt is meant to be used. art/build.mjs turns them into the atlases in assets/.

	Rocket (rocket.poses.json): a palette grid in five roll frames, tilted up to 30 degrees by RotSprite rotation, each with its turned nozzle point. Its crash pieces (nose, cockpit, tail, fins) are cut from the same grid and spun through 16 angles.
	Asteroids (rocks.poses.json): three rock bodies turned through 16 angles by RotSprite rotation, then lit from a fixed light with a neon edge and glow. Three colours are copies with the neon remapped.
	Exhaust (exhaust.fluid.json): a fluid simulation the game runs live with Pixelbolt's createLiveFluid. Steering stirs the gas and a boost flares it. This GIF is the baked loop the game shows until the solver has loaded.
	Effects (boom.fx.json, bursts.fx.json, shield.fx.json, nova.fx.json): particles and shapes (shock rings, impact stars, fireballs, tumbling debris, a boiling shield bubble).
	Power-ups (items.json): one ring and three icons, recoloured with remap and pulsing by palette cycling.

The starfield (stars.json) is noise dithering with twinkling by colour remaps, the planet and nebulae (space.json) use ramp shading and value-noise dither, the score and messages use Pixelbolt's built-in pixel font, the logo (logo.json) is that font with neon outlines, and the link preview image is a Pixelbolt scene (og.scene.json). The page draws everything with Pixelbolt's atlas runtime (vendor/pixelbolt/runtime.js).

Rebuilding the art

The art was built with Pixelbolt at commit 6670597. With Node.js 20 or newer:

git clone https://github.com/skulitom/Pixelbolt.git ../Pixelbolt
git -C ../Pixelbolt checkout 6670597
node art/build.mjs --pixelbolt ../Pixelbolt

The build is deterministic: the same sources and commit give the same bytes. It also copies the Pixelbolt modules the page runs (the fluid solver and the atlas runtime, MIT licensed) into vendor/pixelbolt/. Add --keep <folder> to write each compiled recipe there, to inspect with pixelbolt inspect.

Running locally

The page uses ES modules, so serve the folder over HTTP rather than opening the file:

python -m http.server 8000

Then open http://localhost:8000/. On a local server, window.neonVoyage.advance(ms) steps the game without animation frames, for automated checks.

Project layout

• index.html, css/, js/: the page and the game (game.js rules and drawing, input.js keyboard, mouse, touch and gamepad, exhaust.js the live plume, audio.js synthesised sound and music).
• art/: Pixelbolt recipes and sources, the brief, and the build.
• assets/, media/: built atlases, icons and images. Don't edit them by hand; change the recipe and rebuild.
• vendor/pixelbolt/: Pixelbolt's runtime and fluid modules, copied by the build.

History

The first Neon Voyage (2024) drew its rocket and asteroids with canvas shapes. It was remade in November 2026 with Pixelbolt art, touch and gamepad controls, grazing and multipliers, power-ups that work as described, a pause, synthesised sound, and a page that scales by whole pixels on any screen.

Licence

MIT. Pixelbolt's files in vendor/pixelbolt/ keep their own MIT licence.