# Required

Actors are required for the game to function correctly; they are already included in the map by default when a new mod level is created.

Here is the list of essential requirements:

* **NavMeshBoundsVolume:** Required for AI to navigate your level. Adjust the volume size according to your level. You can check this with the navigation debug tool (press P).
* **LightmassImportanceVolume:** This volume maximizes lighting baking calculations.
* **RealityDefaultPlayerStart:** These are the default spawn points if other spawn points are not present in your level.
* **RealityPlayerStart:** These are the spawn points for your level.

<figure><img src="/files/bM3DpKKS5NeaciLMdX2x" alt=""><figcaption></figcaption></figure>


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