> For the complete documentation index, see [llms.txt](https://beyond-sandbox.gitbook.io/realitysdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://beyond-sandbox.gitbook.io/realitysdk/getting-started/get-the-modkit.md).

# Get The Modkit

{% hint style="danger" %}
**If you’re seeing a 404 page, make sure your GitHub account is linked to your Epic account. Learn how to connect and get access here:**\
<https://www.unrealengine.com/ue-on-github?lang=en-US>
{% endhint %}

{% stepper %}
{% step %}

### Download RealityLauncher.exe

Download the last version of the **RealityLauncher.exe** from the release page. Ignore the **Source code** files:

<https://github.com/AtlasXRInc/RealityLauncher/releases>

<figure><img src="/files/2o3Fm5Kowl2Od5Y8E5i1" alt=""><figcaption></figcaption></figure>

If your browser shows a security warning, click **Keep**. Then open the dropdown and click **Keep anyway**.

<div align="left"><figure><img src="/files/GkFvPYTHO0palJilu79R" alt=""><figcaption></figcaption></figure> <figure><img src="/files/rhUtH0Zb2spKNVUA4InV" alt=""><figcaption></figcaption></figure></div>

Run **RealityInstaller.exe**.
{% endstep %}

{% step %}

### Authenticate to Github

Click **Authenticate**. GitHub opens in your browser.

When prompted, enter the code shown in the installer.

<figure><img src="/files/NQHNZNnD0hbsE1eQqOm2" alt=""><figcaption></figcaption></figure>

Complete the GitHub flow to verify your account.
{% endstep %}

{% step %}

### Install the modkit

Click **Install**. The installer downloads and installs **Unreality Engine**, **RealitySDK**, and all required prerequisites.

{% hint style="warning" %}
Install to your `C:` drive instead of a deep subfolder. This avoids long file path issues in Unreal Engine.
{% endhint %}

<figure><img src="/files/A070w2QKkcYrsiVzT6Gp" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

{% hint style="warning" %}
This requires **at least 15 GB of free space**.
{% endhint %}

***

### Understanding Unreality vs Reality

* **Unreality Engine** is Atlas XR and Meta’s fork of Unreal Engine, optimized for VR. It’s updated rarely and is the base engine you’ll build on.
* **RealitySDK** is the modkit. It’s updated frequently and contains the SDK tools you’ll use when creating mods.

***

### Setting Up Your Project

#### If you don’t have a Modkit Unreal project yet

{% stepper %}
{% step %}

### Open Unreality

It may take a few minutes to compile the first time you open it.
{% endstep %}

{% step %}

### Create a new project

In the Unreal Project Browser:

* Select **Blank Project**
* Choose **Blueprint** (not C++)
* Click **Create** to make a new project.
  {% endstep %}

{% step %}

### Enable the Reality plugin

Once the project opens:

* From the top ribbon, click **Edit → Plugins**.
* Search for **Reality**.

{% hint style="warning" %}

#### **If the Reality plugin is missing**

Close the project and go to `C:\RealitySDK\Tools` and run **RealityUpdater.bat** to install the latest version. You can also download it manually [here.](https://github.com/AtlasXRInc/RealitySDK/releases)
{% endhint %}

* If it's disabled, click the checkbox to enable it.
* Restart the editor when prompted.
  {% endstep %}
  {% endstepper %}

#### If you already have a Modkit project

Make sure you are using the correct Unreal version. Right-click your `.uproject` file → **Switch Unreal Engine Version** → select the path to **Unreality**.

***

### Create your first mod

{% stepper %}
{% step %}
In the Unreal Editor, open the **Reality** dropdown (top menu bar).
{% endstep %}

{% step %}
Select **New Mod**.
{% endstep %}
{% endstepper %}