# Archetype

> The archetype of the entities stored in this chunk.

## Definition

* **Type:** Property
* **Namespace:** [Unity.Entities](/engine/7000.0/script-reference/unity/entities.md)
* **Assembly:** UnityEngine.EntitiesModule

```csharp
public readonly EntityArchetype Archetype { get; }
```

### Remarks

All entities in a chunk must have the same [ArchetypeChunk.Archetype](/engine/7000.0/script-reference/unity/entities/archetypechunk/archetype.md).