# OpenSceneMode

> Used when opening a Scene in the Editor to specify how a Scene should be opened.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEditor.SceneManagement](/engine/6000.6/script-reference/unityeditor/scenemanagement.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public enum OpenSceneMode
```

## Remarks

Additional Resources: [EditorSceneManager.OpenScene](/engine/6000.6/script-reference/unityeditor/scenemanagement/editorscenemanager/openscene.md).

## Fields

| Value                                                                                                                         | Description                                                                                                        |
| ----------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| [Additive](/engine/6000.6/script-reference/unityeditor/scenemanagement/openscenemode/additive.md)                             | Adds a Scene to the current open Scenes and loads it.                                                              |
| [AdditiveWithoutLoading](/engine/6000.6/script-reference/unityeditor/scenemanagement/openscenemode/additivewithoutloading.md) | Adds a Scene to the current open Scenes without loading it. It will show up as 'unloaded' in the Hierarchy Window. |
| [Single](/engine/6000.6/script-reference/unityeditor/scenemanagement/openscenemode/single.md)                                 | Closes all current open Scenes and loads a Scene.                                                                  |