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Ultimate Fallout High Resolution/Modding Guide
By Alysoid
Modding guide for the Steam version of Fallout. Bugfixes, High Resolution and exclusive Fallout1in2 contents.
Do you want a Purist or Advanced Experience?
Purist Experience: Vanilla Patch

Download Fallout Vanilla Patch v4.1.7[www.dropbox.com] (~ 3 MiB)

Choose the good old Vanilla Patch (in the latest Steam version of the game it should be already installed) if you want almost a 1:1 original game experience plus:
  • The most important bugfixes to make the game more stable.
  • High Resolution Patch with the original Fallout 1 game engine.

This solution does not requires Fallout 2 installed on your system.

Advanced Experience: Fallout 1 in 2

Download the Latest Fallout1in2[github.com] (~ 380 MiB)

Fallout 1 in 2 (also known as Fallout Et Tu) brings Fallout 1 into the engine of Fallout 2.

Notable features:
  • Play Fallout 1 with Fallout 2 game engine.
  • Customizable High Resolution mod integrated (f2_res.ini file).
  • Many bugfixes: game more stable than the original with patches.
  • Automatic door opening and closing (Optional).
  • Party members can be controlled in combat (Optional).
  • Continue playing after the main story has been completed (Optional).

This solution requires Fallout 2 installed on the system besides Fallout 1.

More info about Fallout Et Tu: Official GitHub Repo[github.com].
How to install the VANILLA patch
  • Go to Fallout installation folder
  • Check if the file "f1_res_Config.exe" is there. If not, download the Vanilla Patch from the link above and extract the archive to your main Fallout directory. If asked, overwrite all files.

High Resolution Patch
Please follow these simple steps to make the game working in high resolution.
  • Run "f1_res_Config.exe" from your Fallout folder.
  • Choose your preferred options like in the example below.
  • Uncheck "Windowed" if you wanna run the game in Full Screen.
    In Windowed mode the game will automatically use the 640x480 resolution, but you can double the size choosing "Scaling X2". (Warning: Enable X2 scaling sometimes could cause issues with the mouse pointer or random crashes)
  • Click on "ENABLE" to activate the HD patch.
    Text will change to: The Hi-Res Patch is Enabled.
  • Click on "Done".

Screen Settings
On Game's main menu, go to "Options > Screen Settings", to change screen settings on-the-fly, or some other things like the side bar art.

How to install Fallout 1 in 2
  • Install Fallout 1 anywhere (usually "{STEAM_DIR}\steamapps\common\Fallout").
  • Install Fallout 2 anywhere (usually "{STEAM_DIR}\steamapps\common\Fallout 2")
  • Unpack Fallout1in2 into Fallout 2 installation folder.

  • Run "Fallout2\Fallout1in2\undat.exe" and select `MASTER.DAT` file from Fallout 1 installation directory. For Linux you can use undat.sh (requires WINE).
  • Select the "Fallout2\Fallout1in2\" folder as extraction target. Click on Extract

Run "{STEAM_DIR}\steamapps\common\Fallout2\Fallout1in2\Fallout2.exe" to start the game.


Main mod configuration can be found in "Fallout2\Fallout1in2\config\fo1_settings.ini". It is recommended to check and/or tweak settings in this file before starting a new game. Changing settings mid-game have a chance to corrupt savegames or introduce undefined behavior.

Other interesting files:

- ddraw.ini (sfall configuration)
- f2_res.ini (high resolution patch configuration)
- sfall-mods.ini, config/ directory (sfall modifications configuration)

Launch Fallout1in2 as Steam game

Download the Latest SteamDetour[github.com] (~ 5 KiB)

Using Fallout1in2 requires to manually run the game directly from the mod directory outside of Steam. To launch the game through Steam and re-enable some useful features (Play Time, Screenshots...), you'll have to use SteamDetour as a workaround:
  • Unpack SteamDetour anywhere.
  • Open Steam -> Library -> Fallout -> (right click) Properties -> General
  • In Launch options (advanced), use this:
    "{PATH_TO}\SteamDetour.exe" "{STEAM_DIR}\steamapps\common\Fallout2\Fallout1in2\Fallout2.exe" %command%
  • Run the game via Steam
Fallout 2 High Resolution Patch
Now available the High Resolution guide for Fallout 2.
You can find it here:
< >
Alysoid  [author] Apr 25 @ 9:05am 
The guide has been updated to make use of Fallout1in2 instead of FIXT. You can find an archived version of the old guide here: https://archive.ph/ds0jC
HotLeadExpress Apr 7 @ 8:12am 
Dont use FIXT its outdated by now, use more updated FALLOUT 1 in 2 - This project brings FALLOUT 1 into the engine of FALLOUT 2.

INFERNITY Nov 2, 2022 @ 2:04pm 
Does anyone know any way i can switch out the low quality FMVs with some cleaned up versions of them? my intro movie looks like utter shite. other than that FIXT is great
Mr.Ben Sep 2, 2022 @ 10:35am 
hope this works, i'm doing a playthrough and the first video is low quality but the second one will hopefully be played with this :)
𝕷𝖔𝖘𝖙 𝕯𝖔𝖌 Mar 8, 2022 @ 8:48am 
Thanks, it was so helpfull :D
Huggable Cube Jan 16, 2022 @ 9:34am 
Does Purist version include the ability to kill certain NPCs that was removed from regional versions of the game?
Glori4n Nov 1, 2020 @ 6:22pm 
This is outdated, I recommend using Fallout et tu mod instead. Here's the link: https://www.nma-fallout.com/threads/fallout-et-tu-release-v1-3.218045/
Bronson Bro Aug 19, 2020 @ 2:59am 
DT Jul 26, 2020 @ 1:35pm 
Fallout 1 in 2 mod is the newest, more updated mod and yall should be using that instead now.
Gilad Pellaeon Jul 25, 2020 @ 9:50am 
I have fallout fixt installed and I selected full version but I still see some people playing the game with features I don't have such as asking your companion to put on their best armor and asking a companion to stop blocking you in. Were these in this mod or another mod?