# Reset()

> Reset the world to a canonical state so that it will reproduce identical results each time. The world must be empty for this to be called otherwise a warning is produced.

## Definition

* **Type:** Method
* **Namespace:** [Unity.U2D.Physics](/engine/6000.6/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public void Reset()
```