Important

Follow these instructions carefully and in the exact order specified. Skipping steps may lead to installation issues.

Before requesting support, check the Frequently Asked Questions for troubleshooting common errors.

• Navigate to the Root Directory (e.g., C:\, D:\).
• Create a folder named Modding and open it.
• Inside, create a folder named Wabbajack (DO NOT open it).
• Create another folder named Uranium Fever and open it.
• Inside Uranium Fever, create a folder named downloads.

Double Check

Verify these file paths exist (Root Directory may vary):

• C:\Modding\Uranium Fever\downloads
• C:\Modding\Wabbajack

Why?

Excluding these folders prevents Windows or third-party antivirus from blocking essential files.

• Open Windows Security.

• Go to Virus & Threat Protection.

• Under Virus & Threat Protection Settings, select Manage Settings.

• Scroll to Exclusions and select Add or Remove Exclusions.

• Add exclusions for:

  • C:\Modding\Uranium Fever

  • C:\Modding\Wabbajack

    

• Repeat this process for any third-party antivirus software.

• Download the Wabbajack Installation file.
• Move the downloaded file to C:\Modding\Wabbajack.
• Rename Wabbajack.exe to Wabbajack Launcher.exe
• Run Wabbajack Launcher.exe to complete the installation.
• Close Wabbajack.

Version Check

DO NOT use pre-existing installations of Wabbajack or pre-existing Wabbajack shortcuts.

Wabbajack should ONLY be launched from the Wabbajack Launcher.exe.

Self-Contained

This is part one of a process that creates a SELF-CONTAINED installation that won't interfere with preexisting modded setups.

danger

If clean installs are not appropriately created, the Uranium Fever installation process will fail. Simply uninstalling the game through Steam/GOG is insufficient.

• Navigate to C:\[STEAM or GOG FILEPATH] and:
  • Move the Fallout New Vegas folder to the desktop.
  • Delete the Fallout New Vegas folder instead if backups are not desired.
  • Delete the Fallout 3 folder.
• Navigate to C:\Users\[USERNAME]\Documents\My Games and:
  • Move the FalloutNV folder to the desktop.
  • Delete the FalloutNV folder if backups are not desired.
  • Delete the Fallout3 folder.
• Open Steam or GOG and:
  • Uninstall Fallout: New Vegas and Fallout 3 if they are still installed.
  • Reinstall Fallout: New Vegas and Fallout 3.

note

These clean installations and backups will be utilized in the Creating a Clean Stock New Vegas Folder section.

• Launch the Wabbajack application.

• Open the settings page and log into your Nexus account.

  

• Open the Browse Lists page, type Uranium Fever into the search bar, and click the Uranium Fever modlist image.

  

• Click Download & Install.

  

• COPY (Ctrl+C) C:\Modding\Uranium Fever, changing the Root Directory if necessary, and PASTE (Ctrl+V) it into the Installation Location.

• Download Location will auto-populate C:\Modding\Uranium Fever\downloads.

• Once finished, click Install.

  

• Begin the installation and accept the Nexus Mods API request when prompted.

• If you are not a Nexus Mods premium user, manually click download on each mod.

• When complete, Wabbajack will display a green, confirmatory Installation Complete notification.

• Close Wabbajack. DO NOT select the Create Desktop Shortcut option.

Red INSTALLATION FAILED Notification

• Please refer to Frequently Asked Questions for a list of initial troubleshooting steps for common installation errors PRIOR to requesting support.

Reminder

Let the installation FINISH COMPLETELY prior to starting the following sections.

Self-Contained

This is part two of a process that creates a SELF-CONTAINED installation that won't interfere with preexisting modded setups.

Step 1: Creating the Clean Stock New Vegas Folder

• Navigate to the newly reinstalled C:\[STEAM or GOG FILEPATH]\Fallout New Vegas folder, COPY ALL of the contents (click inside the folder, press Ctrl+A, then Ctrl+C), and PASTE (Ctrl+V) them into the C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas folder.

Step 2: Restoring Backups of Current Installs/Modded Instances

important

SKIP step 2 if not backing up another modded instance of Fallout: New Vegas.

• After successfully creating the Clean Stock New Vegas folder, restore the files that were previously backed up.
  • Move your Fallout New Vegas folder from your desktop back into its origin in the C:\[STEAM or GOG FILEPATH] folder, selecting Replace when prompted.
  • Move your FalloutNV folder from your desktop back into its origin in the C:\Users\[USERNAME]\Documents\My Games folder, selecting Replace when prompted.

danger

If a clean Stock New Vegas folder is not appropriate created, the game will fail to launch.

• Launch Fallout: New Vegas from Steam/GOG.
• Click OK when prompted with Detecting Video Hardware.
• Close the launcher.
• Repeat this process for Fallout 3.

• Launch ModOrganizer.exe from C:\Modding\Uranium Fever.
• If prompted that FalloutNV_lang.esp was found, select Yes.
• If prompted to register to handle nxm links, select Yes.

• In the top-right corner of MO2, open the drop-down menu labeled Uranium Fever and select Configuring Game Settings.

• Click Run.

  

• Navigate to Options and select the Ultra Preset.

  • For weaker machines or performance concerns, select the Very High preset, though this reduces visual quality.

• Uncheck the Windowed option if checked and select your monitor's resolution.

  • If your monitor's resolution is unavailable, manually set it by opening MO2's INI editor, navigating to the Falloutprefs.ini tab, and adjusting iSize W and iSize H under the Display section to match your screen's width and height.

• Click OK and close the launcher.

  

Steam Polish-Czech-Russian (PCR) Version

• Open executable settings .

• Select Configuring Game Settings, check the Overwrite Steam AppID box, enter 22490 in the corresponding field, and click Apply.

  

Configuring Game Settings Crashes

Refer to Frequently Asked Questions for common troubleshooting steps before requesting support.

Required Mod

• Download the Tale of Two Wastelands Installer and extract the archive.
• Open the extracted Tale of Two Wastelands Installer folder. Right-click TTW Install.exe and select Run as Administrator.
• Verify that the Fallout 3 file path matches your Steam/GOG Fallout 3 installation path (this should already be auto-populated).
• Copy (Ctrl+C) C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas, changing the Root Directory path if necessary, and paste (Ctrl+V) it into the Fallout New Vegas file path.
• Copy (Ctrl+C) C:\Modding\Uranium Fever\mods\[NoDelete] [DB] Tale of Two Wastelands (TTW), changing the Root Directory path if necessary, and paste (Ctrl+V) it into the Tale of Two Wastelands Installation Path.

Confirm the File Path

Ensure the installation file path is C:\Modding\Uranium Fever\MODS\[NoDelete] [DB] Tale of Two Wastelands (TTW). Installing outside of the mods folder will prevent the game from launching.

• Click Install.

  

• Once the installation is complete and the confirmation screen appears, close the installer.

  

Double Check

Navigate to C:\Modding\Uranium Fever\mods, right-click the [NoDelete] [DB] Tale of Two Wastelands (TTW) folder, select Properties, and verify that the folder size is exactly 17GB.

If not, delete the [NoDelete] [DB] Tale of Two Wastelands (TTW) and [NoDelete] Stock New Vegas folders, then repeat the steps starting from Creating Clean Installs and Backups.

warning

The TTW Installer MUST run on the copy of Fallout: New Vegas inside the [NoDelete] Stock New Vegas folder. A prior TTW installation CANNOT be moved into the Uranium Fever TTW mod folder. The TTW installation process performs BSA decompression, binary patching, and sound file extension alterations, which are critical for a functional installation.

• Navigate to C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas and run FNVpatch.exe.
• A CMD prompt popup will appear, confirming FalloutNV.exe patched!. FalloutNV_backup.exe will also appear in the folder.

danger

Failure to run the 4GB Patch will result in a pink screen or crash when launching the game.

Required Mod

• Navigate to New Vegas Reloaded Discord Server.

• Download the most recent release from the Nightly Builds channel in the DEVELOPMENT category.

  

warning

DO NOT download the versions available in the Ready Builds or Testing channels.

• Click the Install a New Mod from Archive icon in the top left corner of MO2 , select the downloaded NVR archive from the Downloads folder, and name it [NoDelete] [VLQ] [LQ] - New Vegas Reloaded (NVR).

• Select Replace when prompted Mod Exists.

  

Updating New Vegas Reloaded

When instructed to update the mod, simply repeat these steps.

Expand - Linux Installation Instructions

Linux inherently requires above average operating system knowledge and troubleshooting capability. As such, these instructions are less specific. Support WILL NOT be provided for the Linux installation process.

• Requirements:

  • Windows - Access to Windows via a separate installation or a virtual machine.
  • Lutris, Libstrangle, Steam, and SteamTinkerLaunch.

• Instructions:

  • Follow all of the above installation instructions ON WINDOWS.
  • Copy the C:\Modding\Uranium Fever folder to a temporary location on Linux.
  • Open Lutris, click the plus arrow, then search for and install Fallout: New Vegas.
    • Take note of the installation location.
    • Test Fallout: New Vegas to ensure it functions prior to proceeding.
  • Install MO2 via SteamTinkerLaunch.
  • Locate the SteamTinkerLaunch installation of MO2 and copy its wine prefix folder over to Lutris WITHOUT overwriting any files.
  • In Lutris, right click Fallout New Vegas, duplicate its folder, and name it Uranium Fever.
  • Open the Uranium Fever installation winetricks, click on install a dll/component, and add lavfilters and vcrun2022. Then, enable fontsmooth-rgb in winetricks' settings.
  • Move your Uranium Fever folder into the Fallout New Vegas wine prefix folder, preferably next to the Fallout New Vegas folder.
  • Right click the Uranium Fever profile and:
    • In the Runner Options tab, change the runner to wine-ge.
    • In the Game Options tab, change the executable path to the modorganizer.exe in the Uranium Fever folder.
    • In the System Options tab, navigate to environment tables and delete all entries, instead adding DXVK_STATE_CACHE disable. IF using an AMD GPU with RADV drivers, also add RADV_DEBUG noatocdithering.
  • In command prefix, type strangle 60.
  • Launch Uranium Fever through Lutris to open MO2.
  • In MO2:
    • In the MO2 settings, navigate to Paths, then Managed Games. Ensure this path reflects the Stock New Vegas folder.
    • Change the Executable Path for Uranium Fever Launcher and Uranium Fever to reflect the corresponding executables in the Stock New Vegas folder.
    • Open falloutcustom.ini and add iPresentInterval=0 under [Display].
  • Repeat the Configuring Game Settings section of the Windows installation instructions.
  • The game should now launch appropriately. Prior to starting a new game, open settings, then Tweaks, and disable No Pip-Boy on Alt Tab.

Caveats:

• MO2's Nexus Handler does not work. As Uranium Fever is updated, corresponding updates will need to be installed manually.
• Double clicking on a mod in MO2 causes MO2 to freeze. Because of this, mods must be edited manually from explorer.
• If problems are encountered, launch Lutris with debug output via the terminal by typing in lutris -d.

Why?

This step can prevent unforeseen crashes.

• Open Windows Security from the Start Menu.

• Open App & Browser Control from the left sidebar.

• Open Exploit Protection Settings under Exploit Protection.

• Set Force Randomization for Images (Mandatory ASLR) to Use Default (Off).

  

Why?

Disabling DXVK Cache Storage prevents memory-related crashes by halting the creation of the DXVK cache.

• Press the Windows button.

• Search for Env, then select Edit the system environmental variables.

• In the dialog box, click Environmental Variables.

• Under User variables for USER NAME, click New.

• Enter DXVK_STATE_CACHE in the Variable name field.

• Enter disable in the Variable value field.

• Click OK and exit the Environmental Variables window.

  

• Delete any existing DXVK Cache:

  • Steam Users:
    • Navigate to Steam > steamapps > shadercache > 22380 and delete DXVK_STATE_CACHE if it exists.
  • GOG Users:
    • Navigate to Uranium Fever > [NoDelete] Stock New Vegas > FalloutNV.dxvk-cache and delete DXVK_STATE_CACHE if it exists.

• Restart your computer for changes to take effect.

Why?

FPS limiters make the game smoother by reducing rapid FPS fluctuations and preventing timescale desync bugs.

• Download and install RTSS.

• Open the System Tray and click the RTSS icon.

  

• Press the green Add button and select FalloutNV.exe from C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas. Click OK.

  

• Select FalloutNV.exe.

• Set Application Detection Level to Low.

• Set Framerate Limit to 59.95.

  

Exceeding a Framerate Limit of 59.95

Exceeding this value, even on powerful machines, can result in significantly increased stuttering. Exceeding 120 can result in timesync abnormalities.

• Open the settings using the Setup button.

• Enable Passive Waiting and set Framerate Limiter to Front Edge Sync.

• Click OK, then MINIMIZE (not close) RTSS back to the System Tray.

  

Why?

Enabling Flip Model (DXVK with DXGI) reduces latency and supports HDR and VRR.

• Download the premade Fallout: New Vegas Nvidia Driver Profile.

• Download Nvidia Profile Inspector and extract the contents.

• Run Nvidia Profile Inspector, click Import user defined profiles, then select Import Profiles.

  

• Select FNV-NvidiaProfile.nip and click Open.

  

• Click OK on the Profile Successfully Imported! prompt.

  

• Click Apply Changes, then close the program.

  

Driver Updates

Repeat this process after every Nvidia driver update.

• Disable the NVIDIA overlay in the NVIDIA app settings, as it can reduce performance.

  

• In MO2, select Uranium Fever from the dropdown menu, then choose a profile.

  

  • High Quality Profile: Enables all mods and settings.
  • Standard Quality Profile: Disables several performance-intensive New Vegas Reloaded settings (e.g., shadow shaders, terrain parallax shader, and wetworld shader).
  • Low Quality Profile: Disables New Vegas Reloaded, Uranium Haze, and related mods.
  • Very Low Quality Profile: Further reduces settings and disables additional effect and lighting mods.
  • Debugging Profile: Minimal load order, only essential mods enabled.

• Various optional mods with associated descriptions are bundled that the user can enable or disable without voiding support.
  • When enabling or disabling an optional mod, ensure that all other mods sharing the root name are also enabled or disabled.
  

Expand - Optional Mod Descriptions

• Optional Mods - Gameplay:

  • 3rd Person Camera Overhaul - A comprehensive overhaul of the 3rd person camera with shoulder swapping, scope toggling, and smooth camera movement. May be enabled by 3rd person users, though 1st person is HIGHLY recommended for balance and animation considerations.
  • Auto-Equip Weapon if Unarmed - Auto-equips weapons that are picked up while unarmed. May be desirable to disable for unarmed character builds.
  • Death, Reload, and Save Consequences - Leveraged in Uranium Fever to impose a cost on reloading, with a goal of preventing save scumming. Keeping this mod enabled is HIGHLY recommended.
  • Mod Delivery - Commission weapon mods for your equipped weapon from vendors. For further details on utilization, visit the Mod Feature Reference List. Disabled by default because it is egregiously underutilized by users that are unaware of the associated functions.
  • Pip-Boy Weapon Mod Vendor - Enables purchase of weapon mods directly via the pipboy, but at a premium cost. For further details on utilization, visit the Mod Feature Reference List. Disabled by default for balance and immersion considerations.
  • Vendor Radio - Enables purchase of items directly via the pipboy, but at a premium cost. For further details on utilization, visit the Mod Feature Reference List.
  • Quick Start & Associated Addons - Uranium Fever Merge - A merge of quick-start related mods. May be disabled by those who want to experience the Fallout 3 introduction sequence.
  • Uranium Fever Hardercore - Various settings that dramatically increases the difficulty of Uranium Fever. The mod includes the following changes:
    • One perk is gained every 3 levels
    • No perks are gained after being humbled (traveling to the Mojave Wasteland) until the player reaches their pre-humbled level.
    • Less skill points are gained per level.
    • Harsher loot scarcity settings.
    • Hardcore need accumulation rate is doubled.
    • Overencumbrance has a much more dramatic impact on movement speed.
    • Sleeping will restore a much smaller amount of health.
    • Radiation resist effects are reduced by 50% unianimously.
    • Bottled water must be boiled to become clean water.
    • One follower can now be recruited at five permanent charisma, and two followers can be recruited at ten charisma.
    • Pip-boy can no longer be used in combat.
    • Fast travel now costs caps. This effect scales based on distance traveled.
    • Time dilation is halved when using quick select menus.
    • Weapon sway is increased when not meeting weapon requirements.
    • Forced entry settings are more likely to break items in containers and door locks have more health.
    • The Long Haul perk has been disabled, meaning the player can no longer fast travel when over encumbered.
    • The ammo press can now only be used once.

• Optional - Settings:

  • Keybinds - F Activates, Q & E Lean - Swaps the activate key to F and enables manual leaning on the Q and E keys.
  • Stability - More Stable but Worse Performance - Sacrifices a moderate amount of performance for stability. May be enabled by users with frequent crashes.
  • Stability - Most Stable but Worst Performance - Sacrifices a large amount of performance for stability. May be enabled by users with frequent crashes despite enabling Stability - More Stable but Worse Performance.
  • Sound - Uranium Fever Main Menu Music - Uranium Fever specific menu music.
  • Tutorial - Uranium Fever Tutorial - A Uranium Fever specific tutorial. May be disabled by those who have played the game before.
  • UI - 16-10 Aspect Ratio Monitor Support - Enables support for 16:10 monitors.
  • UI - 21-9 Aspect Ratio Monitor (Ultrawide) Support - Enables support for ultrawide (21:9) monitors.
  • UI - 32-9 Aspect Ratio Monitor (Super Ultrawide) Support - Enables support for super ultrawide (32:9) monitors.

• Launch the game via MO2. Launching from Steam, GOG, or the Uranium Fever Launcher will NOT launch the game with Uranium Fever enabled.

• If prompted that INIs are read-only, select Clear the Read Only Flag.

  

Crashing or Freezing During Game Launch

Overwolf is incompatible and will cause a launch crash.

For other sources of crashes, refer to Frequently Asked Questions for troubleshooting steps before requesting support.

• After starting a new game, press K in the pause menu to view Keybinds and Legend. For more details, see the Mod Feature Reference List.

Desktop Shortcuts

Do NOT create desktop shortcuts. This will cause load order abnormalities when updating Uranium Fever.

Authors Only

This step is only necessary for mod authors.

• Steam users:
  • Navigate to Steam and install GECK - New Vegas Edition.
  • Navigate to C:\[STEAM FILEPATH]\Fallout New Vegas and move SSCE5432.dll into C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas.
  • Move GECK.exe from C:\Modding\Uranium Fever into C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas.
• GOG users:
  • Move GECK.exe from C:\Modding\Uranium Fever into C:\Modding\Uranium Fever\[NoDelete] Stock New Vegas, selecting Replace when prompted.