Thief: The Dark Project

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Thief: The Dark Project
Thief: The Dark Project cover
Looking Glass Studios
Eidos Interactive
Square Enix
Dark Engine
Release dates
Windows November 30, 1998
Thief: The Dark Project 1998
Thief Gold 1999
Thief II: The Metal Age 2000
Thief: Deadly Shadows 2004
The Dark Mod (unofficial spin-off) 2009
Thief (2014) 2014

This page is for the original game. For the 2014 reboot, see Thief (2014).

Key points

TFix fixes problems running the game on modern systems.

General information

A wiki for the classic Thief games
TTLG Forums - Thief Series Community Discussions for game series Support Page
Steam Community Discussions
Steam Users' Forums for game series.


Source DRM Notes Keys OS
Retail TFix removes the CD check. Almost exclusively available as part of the Complete Collection which also includes Thief II and Thief: Deadly Shadows.
GamersGate Sold as Thief: Gold.
Green Man Gaming
Humble Store
Steam Sold as Thief: Gold.
An updated version of the original demos is available.

Version differences[edit]

Thief Gold includes extra missions and some other enhancements.

Essential improvements[edit]


TFix updates the game with NewDark for modern systems. Also contains mission fixes and optional texture mods. The GOG release has an out-of-date, stripped-down version of this patch.

Fan Missions[edit]

Running Fan Missions
  1. Install TFix, then open cam_mod.ini and change the line ;fm to fm.
  2. Start FM Selector using your normal Thief Gold shortcut.
  3. Select a folder for installed missions and an FM archive path when prompted.
  4. To install a mission, drop its zip file (do not extract it) into your chosen archive path, start the selector, double click the mission/zip file name and select 'Ok'.
  5. Launch the mission by double clicking the name again. To launch the original game select 'Skip FM' in the lower-left corner.


GoldToDark is a patch that will convert Thief Gold into the original Thief: The Dark Project. This must be used on a clean installation of Thief Gold. TFix can be installed thereafter and should correctly detect that you are using The Dark Project instead of Thief Gold.

Skip intro videos[edit]

Tell intro not to play
  1. Open cam.cfg in the game folder, using Notepad.
  2. Add the line skip_intro to the file and save it.

Texture mods[edit]

Enhancement Pack 2.0[edit]

The Enhancement Pack 2.0 is an updated version of the original Enhancement Pack (which is included in TFix and is much less comprehensive). This contains higher quality reproductions of original textures and objects. Also works with Thief II: The Metal Age.

The Necro Project[edit]

The Necro Project pack is very similar to the Enhancement Pack 2, but focuses on giving the game a slightly darker, noir look. Somewhere between the EP2 and HD Mod in lore-accuracy. Also works with Thief II: The Metal Age.

Thief Gold HD Texture Mod[edit]

The Thief Gold HD Texture Mod adds new textures, effects and enemy skins to all original missions. Significantly alters the game's graphical style (far more than the two packs above). Only compatible with Thief Gold. Includes a tool to configure advanced graphics settings (Anti-Aliasing, Bloom, etc.). An FAQ with installation steps is available.

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>
Configuration files are: cam.cfg (basic settings, resolution), cam_ext.cfg (NewDark advanced settings), cam_mod.ini (Mod and fan mission options), install.cfg and user.bnd (key bindings).

Save game data location[edit]

System Location
Windows <path-to-game>\SAVES
Fan mission saves are kept in the mission's folder.

Save game cloud syncing[edit]

System Native Notes
Steam Cloud

Video settings[edit]

Field of view (FOV)[edit]

  1. Install TFix and set the resolution you want in-game.
  2. If your FOV is not detected correctly edit cam_ext.cfg in the installation folder.
  3. Change ;fov 90 to fov ## with the FOV you want.
  4. Save your changes and relaunch the game.


Set windowed mode
  1. Install TFix.
  2. Edit cam_ext.cfg in the installation folder.
  3. Change ;force_windowed to force_windowed.
  4. Save your changes and set your chosen resolution in-game.
For borderless fullscreen windowed mode choose the desktop resolution in-game.

Vertical sync (Vsync)[edit]

Installing TFix enables Vsync by default. Vsync can be disabled.
Disable Vsync
  1. Edit cam_ext.cfg in the installation folder.
  2. Change ;vsync_mode 0 to vsync_mode 0 and save your changes.

High frame rate[edit]

Set Frame Rate
  1. Edit cam_ext.cfg in the installation folder.
  2. Change framerate_cap 100.0 to framerate_cap ### with the FPS you want.
Ensuring Correct Game Speed
  1. Edit cam_ext.cfg in the installation folder.
  2. Change ;phys_freq 60 to phys_freq 60 and save your changes.
Note: This next step is only necessary if you want more than 250fps
  1. Change SlowFrame 4 to ;SlowFrame 4 and save your changes.

Input settings[edit]

Keyboard and mouse Native Notes
Mouse acceleration
No game-managed mouse acceleration. In addition, Windows mouse acceleration can be disabled in-game by adding use_raw_mouse_input to cam_ext.cfg.
Mouse sensitivity
Default sensitivity is very high.
Mouse input in menus
Mouse Y-axis inversion
Controller support
Go to Options and set Joystick: On.
Full controller support
Controller remapping
Limited remapping.
Controller sensitivity
Controller Y-axis inversion
Additional information
Button prompts
Controller hotplugging
Haptic feedback

Audio settings[edit]

Audio options Native Notes
Separate volume controls
Master volume and ambient sound (usually controls background music in addition to atmospheric sound effects, like machinery).
Surround sound
See EAX support. Up to 7.0 output.[1] May require DirectSound 3D restoration software.
Available since NewDark 1.22. Simply update the game with the latest TFix, go to this page, and follow the instructions.
Closed captions
Mute on focus lost
EAX support
A3D 1.0, EAX 1 [2]

EAX support[edit]

Thief features enhanced 3D sound effects that originally required a Creative sound card with special EAX drivers. To use EAX effects on modern systems, do the following:
Install patch and OpenAL
  1. Install NewDark using TFix.
  2. Install OpenAL
  3. In the game go to Options, Audio, and change Hardware Acceleration to OpenAL. EAX can now be used.

Issues fixed[edit]

A detailed forum thread for technical difficulties is available on the Through The Looking Glass forum.

Crashes on multi-core systems[edit]

Install TFix

Install NewDark via TFix.

Videos do not play[edit]

Install TFix

Install NewDark via TFix.

Retail version won't install[edit]

Owners of the original disc version may encounter problems when attempting to install on modern operating systems.[3]
Run setup.exe in Windows 95 compatibility mode
  1. Go into the disc contents and find setup.exe.
  2. Right-click it and choose Properties.
  3. On the Compatibility Tab, enable Windows 95 compatibility mode and save your changes.

Low frame rate in fullscreen mode[edit]

Thief has frame rate issues in fullscreen mode on Windows 8 and later.
Install TFix

Install NewDark via TFix.

Other information[edit]


Technical specs Supported Notes
Direct3D 6, 9 DirectX 9 requires NewDark/TFix.
Software renderer
64-bit executable


Middleware Notes
Audio DirectSound, OpenAL OpenAL requires NewDark/TFix.

System requirements[edit]

Minimum Recommended
Operating system (OS) 95 98
Processor (CPU) Intel Pentium 166 MHz Intel Pentium 266 MHz
System memory (RAM) 32 MB 64 MB
Hard disk drive (HDD) 210 MB 230 MB
Video card (GPU) SVGA video card
1 MB of VRAM
DirectX 6 compatible
SVGA video card and a 3D accelerator card
4 MB of VRAM
Sound (audio device) 100% Direct X 6.0 compatible sound card
Other 4x CD-ROM drive 8x CD-ROM drive
The system requirements for NewDark/TFix- and by extension those for the release- are higher than the original requirements listed here.


  1. PC Gaming Surround Sound Round-up
  2. Games Tech Help: Thief: The Dark Project - Vortex of Sound (retrieved)