> For the complete documentation index, see [llms.txt](https://gamelauncher.gitbook.io/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gamelauncher.gitbook.io/documentation/creating-app-version/1-and-2.-build-your-app.md).

# 1 & 2. Build your App

Build your app files to let Game Launcher work with it.

{% hint style="danger" %}
**This tutorial assumes you correctly installed the Game Launcher in your server.**

If you haven't done so, go here: [**Installation**](/documentation/getting-started/installation.md)
{% endhint %}

1. Build your game or app in your preferred engine *(or Copy your game build files)*

![Example building a game in Unity](https://4090346021-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOQCKadC4SNL7ML9xwPi2%2Fuploads%2FKRfqOMz1GDvxUyd30DCi%2FBuilding%20the%20App.gif?alt=media\&token=b08976f8-7f54-4892-a57a-450e57a07bfe)

2. In the [Patch Manager](/documentation/game-launcher/patch-manager-app.md) or Unity Manager

**Make sure that you are in&#x20;***<mark style="color:green;">**App Workspace**</mark>*, \
otherwise click **'Switch to App Workspace'** in the topside

3. Assign the [**HOST URL**](#user-content-fn-1)[^1] **like the** [***LauncherConfig.cs***](#user-content-fn-2)[^2]

<figure><img src="https://4090346021-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOQCKadC4SNL7ML9xwPi2%2Fuploads%2FyyyliEz9m8piF9lPWwkn%2Fimage.png?alt=media&amp;token=2c3ae4a2-021d-4f7a-9bae-32187016c689" alt=""><figcaption><p>Assigning the HOST URL (must be the same like the LauncherConfig.cs)</p></figcaption></figure>

3. Click on **Open** **App folder** -> **Paste** your build files&#x20;

<figure><img src="https://4090346021-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOQCKadC4SNL7ML9xwPi2%2Fuploads%2FXlWu2dFOY8jiaARmYcQ2%2FPasting%20files%20in%20App%20Workspace.gif?alt=media&amp;token=a0e6172b-6110-47c3-973b-f2b5b603885a" alt=""><figcaption></figcaption></figure>

Next step:

[**3. Create your patch**](/documentation/creating-app-version/3.-create-your-patch.md)

[^1]: Local must start with *file:///*

    Remote must start with *https\://* or *http\://*

[^2]: This file is located in Visual Studio GameLauncher Project