Free physics simulation
Physics Sandbox
Spawn. Collide. Discover physics in action.
Spawn. Collide. Discover physics in action.
- 01Realistic gravity and collision physics
- 02Spawn unlimited objects — balls, boxes, shapes
- 03Adjust gravity, friction, and elasticity
- 04Fluid and particle simulation modes
- 05Save and share your experiments
Free to start. Unlock it all.
Free
Full object spawner, gravity controls, and collision simulation — completely free with no account required.
Premium
Fluid dynamics mode, particle systems, experiment save slots, and shareable experiment links.
FreeObject spawner
RealPhysics engine
∞Experiments
4+Age rating
Break the laws of physics.
Play instantly at play.koydo.app — no download required.
Play Physics Sandbox