Geareo

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Geareo key art — a workshop of meshing steampunk gears

Geareo

The mechanical invention sandbox where gears actually mesh — build, test, and innovate.

Trailer

Why Geareo

Three systems. Endless machines.

Two spur gears meshing in the editor

Real gears

Working gear trains transmit torque through the whole build. Real ratios, real motion — if the teeth mesh, it turns.

The gear parameter panel with teeth, module and material

Resizable parts

Dial in teeth, module, height and material on any part. Your parts bin is not a fixed set of sizes.

A complex assembled multi-cylinder engine at night

Superglue anything

Join anything to anything and build without a rigid socket grid. If you can imagine the machine, you can bolt it together.

Screenshots

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A sprawling gear-driven machine spitting glowing sparks
A dense wooden-and-brass gear train
Editing a spur gear in the part panel
A player-built aircraft lifting off at dusk
A gear mechanism spinning inside a green wheel
A close-up of red and white gears meshing
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From the community

What people are saying.

# geareo-chat

online
RPS

Rock Paper ShotgunPress

"Here is Geareo to set the world to rights, one perpendicular crown wheel at a time."

CO

coglordPlayer

It's the best techno-sandbox I've seen…

BW

brasswrightPlayer

Besiege if it was just for mechanical nerds and still updated regularly. Can't wait to see what this becomes.

RK

ratio_kingPlayer

Is this a game, or a fully fledged mechanical prototyping suite?

TT

torque_tessaPlayer

The machinations that this game will produce are going to be absolutely EPIC!

Join the Discord

Early Access · Q4 2026 · Steam

Start building machines that actually work.

Wishlist Geareo now — you'll be first to know the day Early Access goes live, and it helps a tiny studio get seen.