# BuildTimeOnlyAtlas

> Pack all the SpriteAtlas when building player/bundles.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

```csharp
BuildTimeOnlyAtlas = 3
```

### Remarks

Legacy sprite packer will not be used.