FloatSpin
Moonbase Test Chamber One · Live

FloatSpin: interactive lunar physics sandbox — Explore how gravity changes everything.

FloatSpin is a reality sandbox for testing how objects, structures and bodies behave when gravity becomes a design variable — beginning with a lunar test chamber.

FloatSpin is an open reality sandbox for exploring how gravity, mass, motion and materials behave in the environments where humans may one day live. Beginning on the Moon.

Enter Moonbase Test Chamber→Open World Design Lab
Physics-ledOpen scienceWebGL
FloatSpin saucer emblem hovering above a beam of light
Chamber telemetry · 0.16 g ↓
The Idea

Not just physics.
Reality under different rules.

FloatSpin lets you change gravity, atmosphere, wind, drag, friction and interaction strength — then throw, spin and collide objects inside a Moonbase test chamber. It is built to make physical behaviour visible and felt.

  • Weight changes.
    Move an object to the Moon and it feels lighter — but it is still the same body.
  • Inertia remains.
    Mass doesn't leave with gravity. Stopping a 75 kg mannequin still takes work.
  • Momentum transfers.
    Collisions honour conservation. Light hits heavy, heavy hits back.
  • Spin persists.
    In vacuum, rotation doesn't decay on its own. A wrench keeps tumbling.
  • Gravity is a vector.
    Down, up, or eventually anywhere. Direction is a control, not a constant.
Chamber One

Beginning with Moonbase Test Chamber One.

The first FloatSpin experience is a lunar test chamber for experimenting with low gravity, inverted gravity, object mass, momentum and collision behaviour.

Live physics · click to fling
Moon Gravity
0.16 g. Lighter weight, unchanged inertia. The default lunar preset.
Inverted Fields
Experimental. Flip gravity up and watch bodies rest against the ceiling.
Real Collisions
Contacts resolve momentum, restitution and friction — not scripted animation.
Human Mannequin
A 75 kg body to push, catch or spin. Physics you can relate to.
Throw Interaction
Click-drag on the chamber to fling an object along a real impulse vector.
Observation Window
Earth in the distance across a quiet lunar horizon. Not decoration — orientation.
Enter Moonbase Test Chamber →
Open Source

Repository opening soon.

The engine is being prepared for public contribution. FloatSpin will grow as an open-source simulation project — developers, designers, educators and physics enthusiasts contributing new objects, missions, materials, environments and experiments.

Open-source code. Protected brand. Shared mission.
  • ◇Contribute physics experiments
  • ◇Improve simulation fidelity
  • ◇Design Moonbase missions
  • ◇Build new environments
  • ◇Help make gravity understandable
Future Modules

A sandbox for eventual life on the Moon.

As humans return to the Moon, gravity stops being background and becomes infrastructure. FloatSpin explores how lunar gravity, artificial gravity and unusual environments could shape movement, work, safety, design and play.

  1. 01Habitat design
  2. 02Cargo handling
  3. 03Human motion
  4. 04Lunar construction
  5. 05Low-gravity sport
  6. 06Dust, water, smoke and atmosphere experiments