> For the complete documentation index, see [llms.txt](https://reach-cloud.gitbook.io/reach-explorer-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://reach-cloud.gitbook.io/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/upload-a-space.md).
# Upload a Space
## What is a "Meta Space"?
Meta Space refers to a virtual world where other users can interact with one another. It's like a level in a game, or a simulation. A place where you can move around, interact with things, and explore.
{% hint style="info" %}
Before getting started, make sure you've properly [installed the SDK](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/how-to-install-the-sdk.md) and [created an account](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/create-an-account.md)!
{% endhint %}
1. Open the Demo scene located in `MetaverseCloudEngine/SDK/Scenes/Demo.unity`
2. Click play to try out the scene in local test mode.
3. Once you're ok with the level you've made, select the "Meta Space" game object from within the scene hierarchy.
4. Then from the Inspector window, expand the "Meta Data" dropdown to view / change the space's name, description, thumbnail, etc.
5. After you're done changing the meta data, you can click on "Build & Upload" to finally upload your scene to the REACH Explorer.
{% hint style="success" %}
Once finished, you've successfully uploaded your first Meta Space. You can view your space from within the REACH Explorer app (under the platforms you selected).
{% endhint %}
{% hint style="info" %}
By default, all spaces are unlisted, so you'll have to log in with your uploader account to view the space on the public dashboard.
{% endhint %}
## Requirements for Building to Other Platforms
To build for other platforms, you must install the corresponding modules for your Unity Editor installation. If you don't add these modules, you will not be able to build to those platforms. You can add these modules from the Unity Hub "Installs" tab, adding them to your specific Unity Editor version.
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