> For the complete documentation index, see [llms.txt](https://docs.engagevr.io/engage/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.engagevr.io/engage/advanced-features/using-ifx.md).

# Using IFX

You can access a library of over a thousand immersive effects (IFX) to instantly add 3D models, special effects, and audio effects to a Location.

IFX can have a variety of in-built functionality. For example, an IFX of an animal can include multiple animation states. The IFX automatically switches between idle and walking animations if you move or animate it.

The following video provides an overview of how you can use IFX:

{% embed url="<https://youtu.be/wH_lQwRM2eY>" %}
Using IFX
{% endembed %}

For more information about how to add IFX, see the following sections. For information about how to interact with IFX after you add them, see [Modifying objects](/engage/advanced-features/modifying-objects.md).


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