Demo Differences
While it was our goal for the demo to be as close to the final product for The Inyo as possible, there are some differences between the demo and the full version that are worth noting.

• The Fallout: Vault 13 Demo does not feature any voice acting, and instead features placeholder blank voice lines that can be skipped. This was a deliberate decision driven by several key factors in our development process. Initially, our workflow for integrating voice acting proved much more time-consuming than anticipated, which posed significant delays and led to the decision to not include voice acting in the demo. However, we recently discovered more efficient methods that could reduce voice processing time substantially. Unfortunately, this discovery came too late to implement voice acting in the demo without significant delays, and we opted to focus on ensuring other elements of the game were polished and fully functional. The full version of Fallout: Vault 13 will feature voice acting.
• Changing the "body" option during character creation will cause your character to disappear from view. To minimize any inconvenience, we recommend finalizing other aspects of your character's appearance first, and saving the "body" selection for last. As your character will not be visible, you might need to approximate your choice. There will be an additional in-game reminder of this before character creation. We are aware of this issue and it will be fixed for the full release of Fallout: Vault 13.
• In the Fallout: Vault 13 Demo, your skills will not automatically adjust when your SPECIAL stats change. This was due to a challenging bug that emerged during development. Despite our best efforts, we were unable to resolve the issue without potentially delaying the demo's release. To ensure players could enjoy a stable demo experience, we made the decision to temporarily simplify the skill calculations for the demo. The full release of Fallout: Vault 13 will feature a fully functional skill system.
• While the final product will feature five playable open-world areas, the Fallout: Vault 13 Demo only features one of them, The Inyo. Other open-world areas are in development and have been stripped from the demo to save them for the full version of Fallout: Vault 13.

Requirements
All major DLC and/or the Fallout 4: GOTY Edition are required to play the Fallout: Vault 13 Demo. Your Fallout 4 game must also be downgraded to the pre-next-gen update (1.10.163) version. You should also delete any Creation Club content in your Data folder if present. The only other requirement is Fallout 4 Script Extender (F4SE). A copy of Fallout 1 is not required.
Downgraded Fallout 4 (Pre next-gen version)

• Fallout 4 Version 1.10.163 is Required
• Follow the instructions on the Fallout 4 Downgrader or Simple Fallout 4 Downgrader page to downgrade your installation of Fallout 4.

DLC

• All non-Creation Club DLC is required. Automatron, Wasteland Workshop, Far Harbor, Contraptions Workshop, Vault-Tec Workshop, and Nuka-World (All these DLCs are included with the GOTY version of Fallout 4)
• The High-Resolution Texture pack is not required

Creation Club Content Removed

• Even though you might have a downgraded Fallout 4, some next-gen content may still be in your Data folder and could potentially cause issues. Navigate to your Fallout 4 Data folder and delete all Creation Club content. These are the files that start with "cc" followed by a few letters and numbers, then the name of the item (Remnants, Grenade, etc). Delete all files that match these parameters.

Other Mods/Utilities

• Fallout 4 Script Extender (F4SE) is Required

To ensure that the Fallout: Vault 13 Demo works correctly, we strongly recommend using a mod manager that supports Archive Invalidation, such as Vortex or Mod Organizer 2. Alternatively, you may need to manually adjust the .ini files to enable archive invalidation.

Installation and Configuration
Navigate to the Files tab and find the most recent version of the Fallout: Vault 13 Demo. Use the Mod Manager Download button if you wish to run the Fallout: Vault 13 Demo through a mod manager of your choice. Once loaded in the game, ensure that FalloutVault13.esm is activated in the in-game Load Order screen in the Mods section of the main menu.

Important: 

• Before playing you'll need to make an edit to your fallout4.ini and fallout4custom.ini (We highly recommend doing this through Mod Organizer 2's ini editor. But if you want to do it the manual way you can find it in Documents/MyGames/Fallout4) 
• Replace the [Archive] section with the following... (you should hear the new main menu music if it is working correctl
• Before starting the Fallout: Vault 13 Demo, please ensure that both 'Dialogue Subtitles' and 'General Subtitles' are enabled in the game's options to be able to see the dialogue, as the demo does not feature voice acting. See the 'Demo Differences' section for more information.
• Fallout: Vault 13 is not intended to run alongside Fallout 4. If you'd like to swap easily between Vault 13 and Fallout 4 we recommend you use Profiles in mod managers such as Mod Organizer 2.