# Add a Custom Skybox

### What is a Skybox?

A '**Skybox**' is a flat 2D image applied around your Space. The result simulates the experience of being in a much larger environment. 

{% hint style="warning" %}
*Note: The Skybox will affect the lighting in your scene, so it is best to add this early on.*
{% endhint %}

You can download royalty-free Skyboxes (HDRI Images) from [PolyHaven.com](https://polyhaven.com/).

## How to add a Custom Skybox to your Mona Space.

* Download the EXR from the [PolyHaven](https://www.polyhaven.com) HDRI section (or elsewhere).
* Save it into your assets folder in your Unity build.
* Click on that file in Unity, change the 'Texture Shape > Cube' (in the inspector), and hit apply.
* Create a new material.
* Set the Shader (at the top of the inspector) to 'Skybox/Cubemap.'
* Drag your EXR file onto the Cubemap (HDR) slot in the material.
* Drag your material onto the scene's background; it should update with your Skybox!

{% hint style="info" %}
*Tip: If using the Skybox>Panoramic, uncheck "generate mipmaps" on your image texture settings.*
{% endhint %}

*For more information on adding skyboxes in Unity go to* :[ Watch Skybox Tutorial here.](https://learn.unity.com/tutorial/fps-mod-customize-the-sky?projectId=5d9c91a4edbc2a03209169ab)