Amnesia: A Machine for Pigs

Amnesia: A Machine for Pigs

Developers
	The Chinese Room
macOS (OS X)	Edward Rudd
Linux	Edward Rudd
Publishers
	Frictional Games
Engines
	HPL Engine 2
Release dates
Windows	September 10, 2013
macOS (OS X)	September 10, 2013
Linux	September 10, 2013
Reception
Metacritic	72
IGDB	73
Taxonomy
Monetization	One-time game purchase
Perspectives	First-person
Controls	Direct control
Genres	Survival horror
Themes	Horror
Series	Amnesia

Amnesia
Amnesia: The Dark Descent	2010
Amnesia: A Machine for Pigs	2013
Amnesia: Rebirth	2020
Amnesia: The Bunker	2023

Warnings

The macOS (OS X) version of this game does not work on macOS Catalina (version 10.15) or later due to the removal of support for 32-bit-only apps.

Key points

Game is open source.

General information

Port Report

Official support page

GOG.com Community Discussions for game series

GOG.com Support Page

Steam Community Discussions

Availability

Source	DRM	Notes	Keys	OS
Epic Games Store		Game can be launched directly from the executable.
GOG.com
Humble Store
Microsoft Store		Bundled in Amnesia: Collection. Included with Xbox Game Pass for PC.
Steam		DRM-free when running "aamfp_NoSteam" executable. Amnesia Re-collection also available.
Mac App Store (unavailable)

Essential improvements

Skip intro videos

Edit main_settings.cfg
Go to the configuration file(s) location. Open main_settings.cfg with a text editor. Change ShowPreMenu="true" to ShowPreMenu="false" Save the changes.

Enable quick save

Edit user_settings.cfg
Go to the configuration file(s) location. Go into <user-id> and open user_settings.cfg with a text editor. Change AllowQuickSave="false" to AllowQuickSave="true" Save the changes. Notes Press F4 to save and F5 to load.

Game data

Configuration file(s) location

System	Location
Windows	%USERPROFILE%\Documents\Amnesia\Pig\
macOS (OS X)	$HOME/Library/Application Support/Frictional Games/Amnesia/Pig/
Linux	$HOME/.frictionalgames/Amnesia/Pig/
Steam	<Steam-folder>/userdata/<user-id>/239200/

This game does not follow the XDG Base Directory Specification on Linux.

Save game data location

System	Location
Windows	%USERPROFILE%\Documents\Amnesia\Pig\
macOS (OS X)	$HOME/Library/Application Support/Frictional Games/Amnesia/Pig/
Linux	$HOME/.frictionalgames/Amnesia/Pig/
Steam	<Steam-folder>/userdata/<user-id>/239200/

Save game cloud syncing

System	Native	Notes
Epic Games Launcher
GOG Galaxy
OneDrive		Requires enabling backup of the Documents folder in OneDrive on all computers.
Steam Cloud		Approx. 95 MB available. Settings will sync too, except graphics settings.
Xbox Cloud

Video

Launcher.

Basic settings

Advanced settings

Graphics feature	State	WSGF	Notes
Widescreen resolution
Multi-monitor
Ultra-widescreen
4K Ultra HD			Options menu UI doesn't scale.
Field of view (FOV)		See Field of view (FOV).
Windowed
Borderless fullscreen windowed		See the glossary page for potential workarounds.
Anisotropic filtering (AF)		Up to 16x.
Anti-aliasing (AA)		On or off but proper AA and not FXAA.
Vertical sync (Vsync)		Not present in launcher. Can be enabled in-game. Adaptative Vsync is also available.
60 FPS
120+ FPS		See High frame rate.
High dynamic range display (HDR)		See the glossary page for potential alternatives.

Field of view (FOV)

Edit game.cfg
Go to <path-to-game>\config\ Open game.cfg in text editor Locate line FOV = "70" in section Player_General and change its value to your desired field of view value.

High frame rate

All gameplay elements are locked to 60 FPS. This includes physics, puzzles, player movement, input and most animations. This limit can be removed, but will only affect particles and some animations.

Remove FPS cap
Go to the configuration file(s) location. Open main_settings.cfg with a text editor. Change LimitFPS="true" to "false".

Input

Input settings

Keyboard and mouse	State	Notes
Remapping
Mouse acceleration		Mouse smoothing can be toggled.
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller
Controller support
Full controller support
Controller remapping		Not remapping properly with the Xbox Controller.
Controller sensitivity
Controller Y-axis inversion

Controller types

XInput-compatible controllers
Xbox button prompts
Impulse Trigger vibration

DualShock 4 controllers

Generic/other controllers

Additional information
Controller hotplugging
Haptic feedback
Simultaneous controller+KB/M

Audio

Audio settings

Game settings

Audio feature	State	Notes
Separate volume controls		Only master volume slider.
Surround sound		See Surround sound for a fix.
Subtitles
Closed captions
Mute on focus lost		Doesn't mute when viewing journal entries.

Surround sound

Game is using old implementation of a sound system which limits output only to stereo.

Surround sound fix

Download OpenAL Soft (PCGamingWiki mirror). Extract archive, navigate to Win32 folder from this archive. Copy soft_oal.dll to the installation folder. Launch game launcher and navigate to the Sound options tab. There should be new Unsuported device. Select it and launch the game. In case there is no Unsupported device: Launch game with soft_oal.dll file in the same folder as game's exe file. Quit game, navigate to %USERPROFILE%\Documents\Amnesia\Pig and open launcher.log in text editor. Locate section Initializing Sound Module. There are all available sound devices. Open main_settings.cfg from the same Main folder. Locate line <Sound Device= and change to corresponding value of sound device from launcher.log.

Localizations

Language	UI	Audio	Sub	Notes
English
Czech				Fan dub available here
French
German
Hungarian
Italian
Japanese				Fan translation. Available to download. To activate it run the launcher and there select language "Japanese" and start the game.
Korean				Fan translation. Available to download.
Polish
Brazilian Portuguese
Russian
Spanish
Turkish				Fan translation, download.
Ukrainian				Fan translation. Available to download. To activate it run the launcher and there select language "Українська" and start the game.

VR support

3D modes	State	Notes
Nvidia 3D Vision		Use 3D Surround Gaming.
vorpX		G3D Official supported game, see official vorpx game list.

Issues fixed

Game launches extremely zoomed in

The issue occurs when the application scaling conflicts with Windows' scaling.

Override high DPI scaling[citation needed]
Go to <path-to-game>. Right-click on aamfp.exe and select Properties. Click on the Compatibility tab, then select Change high DPI settings. Check the Override high DPI scaling behavior box and make sure the drop-down menu is set to Application. Click OK, apply the changes and launch the game.

Low frame rate

Two particular video options, anti-aliasing (known as "smoothing" in-game) and ambient occlusion, drastically decrease frame rate with very little visual improvement. Turning these settings off is recommended. See the PCGamingWiki Port Report.

Vertical camera movement only with mouse

Disconnect controller
Unplug your controller. Start a new game.

Crash during startup

Disconnect any gamepads and then start the game

Freeze/lag every now and then

A possible solution can be found at the official Amnesia A.M.F.P Troubleshooting Guide.

Edit main settings[citation needed]
Go to %USERPROFILE%\Documents\Amnesia\Pig Open 'main_settings.cfg' in a text editor. Locate entry <Sound.... Change MaxChannels="64" to MaxChannels="32". Change StreamBuffers="8" to StreamBuffers="4". Start the game and check if it worked. If not, also change StreamBufferSize="262144" to StreamBufferSize="131072".

Light halos showing through walls

Start in offline mode
Start Steam in offline mode or disable Steam Cloud for the game. Start the game and enter Launcher Settings. Select auto-detect video device. Alternatively remove all .ini files from the game data locations for the game and try fix again.

Adjusting in-game gamma does nothing

Disable gamma changing programs such as f.lux or DisplayCAL[citation needed]

Gamma changes persist after exiting the game

If the in-game gamma setting is increased, it can sometimes alter the desktop's gamma even after the game is closed.

Use f.lux to restore gamma[citation needed]
Download and install f.lux. Run it and the desktop gamma should return to normal.

Enable Nvidia's own color settings in the Nvidia Control Panel

Screen gets offset to the right

Edit Compatibility
Right click the .exe. Go to "Properties" and then to "Compatibility" tab. Go to "Change high DPI settings". Make sure the "Override high DPI scaling behavior" box is checked and set to "Application". Save and exit.

Other information

API

Technical specs	Supported	Notes
OpenGL	2.1

Executable	32-bit	64-bit	Notes
Windows
macOS (OS X)			This 32-bit-only macOS game does not work on macOS Catalina (10.15) or later.
Linux			Gog version 64 bit

Middleware

	Middleware	Notes
Audio	OpenAL	6.14.0357.24

Strong blue haze

The game has slight blue fog effect that is very apparent in the first level. This is intentional, but this effect can be undesirably strong on some screens.

Fog editing mod
Launch the game at least once and disable color grading in the video options Download the mod here, then extract its contents in <path-to-game>\maps\. Overwrite existing files Start a new game or proceed through a level transition to take effect

Edit save files
Launch the game and create save if you don't have one. Go to %USERPROFILE%\Documents\Amnesia\Pig\<user-id> Locate your last save and open it in text editor. Locate entry name="mbFogActive" val="true" and change true to false.

Edit shader files

An alternative to the save game method is to edit the shader files. This has the advantage of being a permanent solution (instead of per-save), and it also allows you to reduce (or increase!) the effect by an arbitrary factor. Go to <path-to-game>/core/shaders Edit deferred_fog_frag.glsl. Locate entry float fAmount = max(fDepth / avFogStartAndLength.y,0.0); and change it to float fAmount = 0.0; to switch the effect off completely, or e.g. to float fAmount = max(0.25 * fDepth / avFogStartAndLength.y,0.0); to reduce the effect to 25 % of original.

On some setups editing the shader files/disabling the fog through editing a save file doesn't fully alleviate the symptom. If that's true for you, then disabling through the game's settings all or a combination of: colour grading, screen space ambient occlusion (SSAO), and Vsync should fix the issue when applied in conjunction with one of the above fixes

System requirements

Windows

macOS (OS X)

Linux

Windows
	Minimum	Recommended
Operating system (OS)	Vista	7
Processor (CPU)	Intel Core i3 AMD A6	Intel Core i5 AMD FX
System memory (RAM)	2 GB	4 GB
Hard disk drive (HDD)	5 GB
Video card (GPU)	Nvidia GeForce 200 AMD Radeon HD 5000	Nvidia GeForce 400 AMD Radeon HD 6000

Integrated Intel HD Graphics should work but is not supported.

macOS (OS X)
	Minimum	Recommended
Operating system (OS)	10.7.5
Processor (CPU)	Intel Core i3 AMD A6	Intel Core i5 AMD FX
System memory (RAM)	2 GB	4 GB
Hard disk drive (HDD)	5 GB
Video card (GPU)	Nvidia GeForce 200 AMD Radeon HD 5000	Nvidia GeForce 400 AMD Radeon HD 6000

Integrated Intel HD Graphics should work but is not supported.

Linux
	Minimum	Recommended
Operating system (OS)	Major Linux Distribution from 2010	Major Linux Distribution from 2012
Processor (CPU)	Intel Core i3 AMD A6	Intel Core i5 AMD FX
System memory (RAM)	2 GB	4 GB
Hard disk drive (HDD)	5 GB
Video card (GPU)	Nvidia GeForce 200 AMD Radeon HD 5000	Nvidia GeForce 400 AMD Radeon HD 6000

Integrated Intel HD Graphics should work but is not supported.