Spark Workshop

One spark. Every lamp.

A relaxing logic puzzle about sparks, clever routes, and satisfying chain reactions. Turn the parts, launch one spark, and see your workshop light up. No timer. No ads. Room to experiment.

Start with 20 free puzzles — click Run game above.
Keep the sparks going: the full edition contains 99 puzzles, including the demo's 20.

Explore the full edition · USD 3

A small turn. A bright idea.

• Plan the path. Rotate orange parts to guide the spark toward every lamp.
• Watch it unfold. Split the spark, open gates, and time your route with hourglass delays.
• Try another idea. Undo, restart, and free clues help you find your way without a ticking clock.
• Make it glow. Four free visual themes and six layers of workshop effects add a little more light as you play.

From 20 puzzles to 99

Free browser demo	Full browser download
20 puzzles	99 puzzles total
Arrows, splitters, keys, gates and delays	Everything in the demo, plus 79 more puzzles
Learn the spark-routing rules	Explore linked gears, portals, mirrors and two-input joiners
Play here in your desktop browser	Extract the ZIP and open Play.html in your desktop browser

Both editions include undo, restart, clues, level selection, local saves, save export/import, and separate music and sound controls. There are no in-game accounts or online activation.

Your workshop, a little brighter

Choose Lamp Workshop, Clockwork Stars, Orbit Lights, or Prism Fireworks. Complete different puzzles in one session to build up six layers of effects. Prefer a calmer view? Reduced motion keeps a static lamp border. Your theme is saved; the effect buildup starts fresh when you reopen the game.

The gameplay screenshots show version 0.1.3, puzzle 8, with Prism Fireworks and all six effect layers after 16 different session completions. The partial attempt lights 2 of 4 lamps and leaves the full solution to you. Captured on macOS in Chrome; mild puzzle spoilers.

Ready to play?

Try it free: click Run game at the top. If you enjoy following the spark, explore all 99 puzzles in the full edition.

How do I control the spark?

Click orange parts to adjust them; gray parts stay fixed. Arrows turn clockwise, and hourglasses cycle through delays. Select Launch spark to test your route. Use Undo, Restart, or Free clue whenever you need them. Keyboard: Tab to focus a part; Enter or Space to adjust it. In the full edition, linked gears turn in opposite directions and mirrors switch faces.

Do I need to install anything?

The demo runs here in your browser. For the full edition, extract the ZIP and open Play.html in an existing desktop browser. No installer, npm, or local server is required. This is an HTML browser download, not a Windows executable or native Mac app. macOS Chrome has development-test coverage; the itch demo was also checked in macOS Edge. Windows and mobile/tablet remain unverified.

Can I bring my demo progress with me?

Yes. Export your save from Settings, then import it into the full edition. A matching demo save merges completed puzzles while keeping the full edition's current settings and board. Same-edition imports replace saved progress, settings and board; review the preview before confirming. Export previous backup can recover the pre-import save. A save file does not grant a purchase.

Where is my progress saved?

On this device and browser, with no cloud saves. Browser data clearing, private browsing, a different browser/device, or a different address can lose progress. Export a backup from Settings before making those changes.

Something went wrong?

Leave the puzzle name, version, browser/device and what happened in the project comments. Please keep personal information out of screenshots.