Gearbox Symphony
Somewhere in a brass-plated factory, a collection of musical blueprints has gone missing. The machines are silent. The gears have stopped turning. Somebody needs to rebuild them — and that somebody is you.
Your job? Listen to each blueprint, figure out what goes where, and piece together a mechanical orchestra from scratch. No sheet music. No instructions. Just your ears and a box full of tools.
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Each tool makes a different sound when the playhead hits it.
| 🔨 Hammer | A sharp metallic clang — your main percussion. |
| 🪗 Bellows | A warm breathy "whoosh" — like a pipe organ breathing. |
| 🌀 Spring | A bright bouncy "boing!" — playful and fun. |
| 🔱 Tuning Fork | A clean, sustained tone. The closest to a real note. |
| ⚙️ Gear | A mechanical click-clack. Perfect for filling gaps. |
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Floor 1 — The Brass Workshop
5 levels to teach you the ropes. Small grids, simple patterns. Friendlier than it looks.
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Floor 2 — Steam Powered
Bigger grids, trickier melodies. You'll start second-guessing yourself — and that's the fun part.
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Floor 3 — Crystal Harmonic
The final floor. All 5 tools, complex patterns, and melodies that'll make you hit replay.
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Beat Floor 2 and you unlock Free Play — same puzzle, your rules. Crank up the grid width, limit your toolbox, or go all-out. Blueprints get randomly generated every time, so no two rounds play the same.
Pro tip: turn off "Live Star Score" for a blind challenge — you won't see your rating until you hit POWER ON.
🖱️ / 📱
Click or Tap. That's it.
| 🖱️ Mouse | Click a tool, click the grid to place. Click eraser to remove. |
| 📱 Touch | Same thing — just tap. Works on phones and tablets. |
| 💡 | Use Test Run to preview without submitting — retry as much as you want |
| 💡 | Hit Run Blueprint to re-listen to the target anytime |
| 💡 | Undo is your best friend — one step back if you misplace |
| 💡 | Which column matters — timing is just as important as the right tool |
🎧 Original soundtrack available for free download!
| 01 | The Golden Factory |
| 02 | Fireside Melody |
| 03 | Heart of Steam |
| 04 | Crystal Lullaby |
Made for Gamedev.js Jam 2026
Theme: "Machines" · Solo dev · Powered by Phaser
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