> 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/limits.md).

# Limits

### Platform Size

There are file size limits on certain platforms. This applies to [Meta Spaces](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/upload-a-space.md#what-is-a-meta-space) and [Meta Prefabs](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/upload-a-prefab.md#what-is-a-meta-prefab).

| iOS    | WebGL  | Android | Android VR |
| ------ | ------ | ------- | ---------- |
| 150 MB | 150 MB | 250 MB  | 250 MB     |

{% hint style="warning" %}
All custom avatars must be below 10 MB.
{% endhint %}

### C# Scripting

Custom C# scripting is **not** supported. See [here](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/custom-scripting.md) for more info.

### Rendering

Certain render pipelines are not supported. See [here](/reach-explorer-documentation/metaverse-cloud-engine-sdk/unity-engine-sdk/render-pipelines.md) for more info.