# Configure global Physics Core 2D API settings

> To configure layers, default definition values, and global settings, create and assign a Physics Core Settings 2D asset.

> **Note:**
>
> This documentation is about writing C# scripts using the `Unity.U2D.Physics` API. To use 2D physics in the Unity Editor using components like the Rigidbody 2D component, refer to [2D physics](/engine/6000.5/manual/unity2d/2d-physics.md.md) instead.

To configure global settings for the Physics Core 2D API, create and assign a Physics Core Settings 2D asset. Follow these steps:

1. In the **Project** window, select **Assets** > **Create** > **2D** > **PhysicsCore Settings 2D**.

2. From the main menu, select **Edit** > Editor.

3. In the **Project Settings** window, select **PhysicsCore 2D**.

4. Drag the **Physics Core Settings 2D** asset from the **Project** window to the **PhysicsCore Settings** setting.

The 2D physics system now uses the settings in the asset.

## Configure the settings

To display and edit the settings, in the **Project Settings** window, select **PhysicsCore 2D** > **Settings**. For a full list of settings, refer to [PhysicsCore 2D reference](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-physics-core2dproject-settings.md).

For more information about configuring each section of the settings, refer to the following:

* [Configure collisions between Physics Core 2D API objects](/engine/6000.5/manual/unity2d/2d-physics-api/interactions/collisions-enable.md) for using and editing the **Layers** tab settings.
* [Configure Physics Core 2D API scenes with definitions](/engine/6000.5/manual/unity2d/2d-physics-api/properties/definitions.md) for editing the **Default Definitions** tab settings.
* [PhysicsCore 2D reference](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-physics-core2dproject-settings.md) for editing the **Global** tab settings.

## Additional resources

* [Configure Physics Core 2D API objects with definitions](/engine/6000.5/manual/unity2d/2d-physics-api/properties/definitions.md)
* [PhysicsCore 2D reference](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-physics-core2dproject-settings.md)