MechWarrior 4: Mercenaries

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MechWarrior 4: Mercenaries
MechWarrior 4: Mercenaries cover
Cyberlore Studios
FASA Interactive
Microsoft Game Studios
MekTek Studios
Release dates
Windows November 7, 2002
MechWarrior 4: Mercenaries on MobyGames
MechWarrior 4: Mercenaries on Wikipedia


SafeDisc retail DRM no longer functions properly on Windows Vista and later (see Availability for affected versions).
Subseries of BattleTech
MechWarrior 1989
MechWarrior 2: 31st Century Combat 1995
MechWarrior 2: Mercenaries 1996
MechWarrior 3 1999
MechWarrior 4: Vengeance 2000
MechWarrior 4: Mercenaries 2002
MechWarrior: Living Legends (unofficial game) 2009
MechWarrior Online 2012
MechWarrior 5: Mercenaries 2019

Key points

Comes with all 'Mechs from the MechWarrior 4: Vengeance's expansion
Compatible with MechWarrior 4: Vengeance's Mech Packs.
No longer available as freeware.[1]

General information

BattleTech Wiki - A massive wiki for everything BattleTech related
MechWarrior 4: Mercenaries on - solving some technical issues.


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
SafeDisc v2 DRM[Note 1].
SafeDisc retail DRM no longer functions properly on Windows Vista and later (see above for affected versions).
This game is no longer available digitally.[1]

Essential improvements[edit]

Skip intro videos[edit]

  1. Add the argument: /gosnovideo


Retail game[edit]

In 2003, the retail game received its first and only patch: MechWarrior 4: Mercenaries Point Release 1 (PR1).

Free release (from Mektek)[edit] (2010-04): game + first patch. (2010-05): game + first patch + latests ATI and Nvidia Cards support.

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>\options.ini[Note 2]

Save game data location[edit]

System Location
Windows <path-to-game>\RESOURCE\Pilots\[Note 2]

Video settings[edit]

Launcher settings.
Launcher settings.

Graphics feature State WSGF Notes
Widescreen resolution
False for retail; true for Free Release (abandoned project mektech offered High Definition Patch).
4K Ultra HD
Field of view (FOV)
Toggle with Alt+ Enter.
Borderless fullscreen windowed
Anisotropic filtering (AF)
Anti-aliasing (AA)
On/off only; set in the launcher.
Vertical sync (Vsync)
60 FPS and 120+ FPS

Input settings[edit]

Audio settings[edit]

Audio settings.
Audio settings.

Audio feature State Notes
Separate volume controls
Music and Sound Effects.
Surround sound
Closed captions
Mute on focus lost


Multiplayer types

Type Native Players Notes
LAN play
Online play

Connection types

Issues fixed[edit]

"Your current hardware or driver setup is not compatible with MechWarrior 4" error[edit]

When attempting to run the game on a modern Nvidia or AMD GPU you may receive the error "Your current hardware or driver setup is not compatible with MechWarrior 4..."; you may also be prevented from selecting your graphics card in the autoconfig_MERCS.exe setup program.
Rename imagehlp.dll[4]
  1. Go to <path-to-game>\Assets\Binaries\
  2. Delete or rename imagehlp.dll.
  3. Run autoconfig_MERCS.exe as administrator.
  4. Select the correct GPU and setup options as preferred and click continue. You should now be able to run the game normally.

Other information[edit]


Technical specs Supported Notes
Direct3D 8.1
Executable 32-bit 64-bit Notes

System requirements[edit]

Operating system (OS) 98, ME, 2000, XP
Processor (CPU) 700 MHz
System memory (RAM) 128 MB
Hard disk drive (HDD) 1 GB
3 GB (Free Release)
Video card (GPU) 16 MB of VRAM


  1. SafeDisc retail DRM does not work on Windows 10[2] and is disabled by default on Windows Vista, Windows 7, Windows 8, and Windows 8.1 when the KB3086255 update is installed.[3]
  2. 2.0 2.1 When running this game without elevated privileges (Run as administrator option), write operations against a location below %PROGRAMFILES%, %PROGRAMDATA%, or %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore on Windows Vista and later (more details).