> For the complete documentation index, see [llms.txt](https://unity.zoeimmersive.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://unity.zoeimmersive.com/adding-interactivity/interactive-objects.md).

# Interactive Objects

Zoe programming system uses what we call ‘Interactive Objects’ shortened hereafter **IOs**.

IOs are any object you want to add **life** to. Only an IO can use the **interaction system** of Zoe. IOs can be 3D objects, 2D objects, or any other object within your Unity scene. For instance, you can create a simple cube in Unity and convert it to an IO or you can import a model in Unity from your favorite 3D modeling software and convert it to an IO. As soon as an object has been converted into an IO, you will be able to add interactions and interact with it in VR.<br>

<figure><img src="/files/psibqtVGVyoaTpLOAXSe" alt=""><figcaption><p>An 'interactive apple'.</p></figcaption></figure>


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