> For the complete documentation index, see [llms.txt](https://megacrush.gitbook.io/megacrush-unity-assets/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://megacrush.gitbook.io/megacrush-unity-assets/ambient-city/ambient-city-user-manual/faq.md).

# FAQ

#### Licensing & Content Origins

Ambient City is a curated and modernized collection of characters, animations, and tooling designed for ambient population and city-life scenarios in Unity.

Some of the underlying character and animation assets originate from content originally released by Microsoft under the **MIT License**. These assets were historically distributed as part of Rocketbox-style character libraries and have been widely used in real-time applications, visualization, and games.

#### What is different from the original Rocketbox Content?

The original Rocketbox content as released by Microsoft did not include a Unity Humanoid compatible skeleton. 

As a result, we decided to undertake:

* the very laborious process of retargetting all of the animations to a clean skeleton AND 
* update all 100+ characters with a corrected skeleton to clean up all Humanoid warnings.  

As a result, while the character mesh / textures remain from the original Rocketbox characters, the skeleton / skin weighting have been completely reworked.

The Ambient City collection also is reorganized, and setup with materials, demo scenes and more for all 3 of Unity's render pipelines, URP, Built-In and HDRP.

***

#### Why this content is included

The original assets provide a strong foundation for believable background characters, but were not authored with modern Unity workflows in mind. Ambient City builds on this foundation by:

* reorganizing content into focused, modular packages
* standardizing folder layout and naming
* providing demo scenes and visualization tools
* adding editor tooling and automation
* applying import-time fixes for legacy export issues

These changes significantly improve usability and integration while preserving the original creative intent of the assets.

***

#### Licensing model

Ambient City as a package is distributed under the **Unity Asset Store EULA**.

However, in accordance with open-source requirements:

* Components originally released under the MIT License **retain their original license**
* The full MIT license text and attribution are included in this package
* No additional action is required for typical game or application use

{% hint style="info" %}
TLDR: the 'Original Rocketbox' characters & animations are available under the MIT license, however the Ambient City Collection and all variations are licensed under the Unity Asset Store license terms.
{% endhint %}

You are free to use the content in commercial or non-commercial projects, including shipped games and applications.

***

#### Why you can purchase this package

The MIT License explicitly permits redistribution and commercial use.

What you are purchasing with Ambient City is not a change in license of the original assets, but the **value added through curation, tooling, documentation, support, and ongoing maintenance**.

This approach is common across the Unity Asset Store and the broader software ecosystem.

***

#### Redistribution note

If you redistribute the Ambient City package or its contents outside of a built application (for example, as part of another asset package), you must retain the included third-party license notices, as required by the MIT License.

For normal project use and game distribution, no additional steps are required.

***

#### In summary

* Ambient City is sold under the Unity Asset Store EULA
* Some components originate from MIT-licensed source content
* Attribution is included and handled for you
* Commercial use is fully permitted
* The package focuses on convenience, organization, and production-ready workflows