Arx Fatalis

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Arx Fatalis
Arx Fatalis cover
Arkane Studios
JoWood Productions
DreamCatcher Interactive
Release dates
Windows June 28, 2002
Arx Fatalis guide at StrategyWiki
Arx Fatalis at Wikipedia

Key points

Arx Libertatis updates and improves support for modern systems, porting the game to new systems as well as eliminating bugs and limitations.

General information

Arx Libertatis Wiki Community Discussions Support Page
Steam Community Discussions


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
Patched to 1.21.
Icon overlay.png
Patched to 1.21.

Essential improvements[edit]


Arx Fatalis Patch 1.21 fixes some issues with running the game on modern systems. This patch will update any version; no previous patch is required.

Digital distribution versions usually include this patch but disc versions do not.

Arx Libertatis port[edit]

Arx Libertatis is a modern port for Windows and Linux that fixes numerous issues (install Arx Fatalis Patch 1.21 first if using a disc version).

The most recent official release, 1.1.2, is from October 2013. Try the latest development snapshot to take advantage of the project's more recent improvements. Bear in mind that a small number of known regressions and issues have cropped up in the development versions. These builds are not fully tested, but generally very stable.

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>\cfg_default.ini
Linux (Proton) <Steam-folder>/steamapps/compatdata/1700/pfx/[Note 1]
Arx Libertatis settings are stored in %USERPROFILE%\Saved Games\Arx Libertatis\cfg.ini

Save game data location[edit]

System Location
Windows <path-to-game>\Save
Linux (Proton) <Steam-folder>/steamapps/compatdata/1700/pfx/[Note 1]
Arx Libertatis saves are stored in %USERPROFILE%\Saved Games\Arx Libertatis\save

Save game cloud syncing[edit]

System Native Notes
GOG Galaxy
Steam Cloud

Video settings[edit]

Video settings.
Video settings.

Widescreen resolution[edit]

Some resolutions may not work when selected in-game but can still be used by editing cfg_default.ini directly.
Set unsupported resolution in cfg_default.ini[1]
  1. Go to the configuration file(s) location.
  2. Open cfg_default.ini (cfg.ini if using Arx Libertatis).
  3. Set resolution= to match the resolution you want.
  4. Save your changes. The in-game setting may show 640x480 but the manual resolution will still be used.


Changing video settings in-game may reset the resolution change. Repeat these steps if necessary.
If problems persist use Arx Libertatis.


Enable windowed mode[citation needed]
  1. Go to the configuration file(s) location.
  2. Open cfg_default.ini (cfg.ini if using Arx Libertatis).
  3. Change full_screen=1 to full_screen=0
  4. Save your changes. Reverse this change to go back to fullscreen mode.


Arx Fatalis has a fixed-size window; for a resizeable window use Arx Libertatis.

Input settings[edit]

Input settings.
Input settings.
Keyboard and mouse Native Notes
Mouse acceleration
None by default. Recent Arx Libertatis development snapshots allow this to be enabled, as well as having the option to enable raw mouse input (to bypass Windows desktop mouse acceleration) in the options menu.
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
See the glossary page for potential workarounds.

Audio settings[edit]

Audio settings.
Audio settings.
Audio options Native Notes
Separate volume controls
Master, SFX, Speech and Ambience sliders.
Surround sound
Conversations and cutscenes only; all other speech has no subtitles.
Closed captions
Mute on focus lost
True for Arx Fatalis. False for latest Arx Libertatis release but can be enabled in recent development snapshots (in the audio options menu).
EAX support
EAX 2. Disabled by default. Required EAX Unified[2] before patch 1.21[3]


Language UI Audio Sub Notes
Traditional Chinese
Not available on Steam.
Not available on Steam.
Fan translation, download.
Fan translation, download.
Fan translation, download.

Issues fixed[edit]

HUD doesn't scale at higher resolutions[edit]

Arx Fatalis 1.21 interface elements are very small at higher resolutions. This issue was acknowledged by Arx Liberatis development team and the solution is targeted for Arx Liberatis 1.2 release.[4]
HUD scaling[citation needed]

HUD scaling is present in the most recent Arx Libertatis development snapshots and can be enabled in the Video Options.

Invisible text[edit]

This is caused by forcing anti-aliasing through your video card's control panel.
Use Arx Libertatis[citation needed]

Use Arx Libertatis.

Set application controlled anti-aliasing[5]
  1. Go to the video card control panel.
  2. Set anti-aliasing to "application-controlled".
  3. Enable anti-aliasing in-game (optional).

Other information[edit]


Technical specs Supported Notes
64-bit executable

System requirements[edit]

Minimum Recommended
Operating system (OS) 98 ME, 2000, XP
Processor (CPU) 500 MHz Pentium III or compatible 900 MHz Pentium III or compatible
System memory (RAM) 64 MB 256 MB
Hard disk drive (HDD) 750 MB
Video card (GPU) 16 MB of VRAM 32 MB of VRAM


  1. 1.0 1.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/1700/ in addition to or instead of this directory. The app ID (1700) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.