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Heroes of Might and Magic III

From PCGamingWiki, the wiki about fixing PC games
This page may require cleanup to meet basic quality standards. The specific problem is: Mods don't belong in essential improvements, move to other info. Remove that celestial heaven nonsense from fixes. Rephrase the HD mod stuff and drop the pointless Mods heading. Probably a bunch more.. You can help by modifying the article. The discussion page may contain useful suggestions.
Heroes of Might and Magic III
Heroes of Might and Magic III cover
New World Computing
Linux Loki Software
Linux Loki Software
Release dates
Windows February 28, 1999
Mac OS (Classic) December 21, 1999
Linux December 20, 1999
Heroes of Might and Magic III guide at StrategyWiki
Heroes of Might and Magic III at Wikipedia
Heroes of Might and Magic
Heroes of Might and Magic: A Strategic Quest 1995
Heroes of Might and Magic II: The Succession Wars 1996
Heroes of Might and Magic III: The Restoration of Erathia 1999
Heroes Chronicles 2001
Heroes of Might and Magic IV 2002
Heroes of Might and Magic V 2006
Heroes of Might and Magic V: Tribes of the East 2007
Might & Magic Heroes VI 2011
Might & Magic Heroes VI: Shades of Darkness 2013
Heroes of Might and Magic III - HD Edition 2015
Might & Magic Heroes VII 2015
Might & Magic Heroes VII: Trial by Fire 2016

This page is for the original version. For the remake, see Heroes of Might and Magic III HD.

General information

GOG.com Community Discussions for game series
GOG.com Support Page
Celestial Heavens forums for game series


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
DRM depending on release location, usually SafeDisc v1.50.020 DRM[Note 1]
Mac OS
Includes multiple bonuses

Mac OS and Linux[edit]

The Mac OS and Linux versions of the game are no longer sold, and existing copies of those are hard to run on modern systems. The easiest solution for running the game on Linux or OS X is buying the Windows version and running it under Wine. Further information on how to do that can be found on AppDB. Alternatively, VCMI can be used to run the game.

Downloadable content (DLC) and expansions

Name Notes
Armageddon's Blade On Mac OS only available in Complete Edition.
Mac OS
The Shadow of Death On Mac OS only available in Complete Edition.
Mac OS

Essential improvements[edit]


HoMM3 High Resolution Project[edit]

Higher resolutions along with 32-bit color support and more fixes.

In the Wake of Gods[edit]

An unofficial expansion pack adding further units, resources and easier modding possibilities. The official English website is located under Celestial Heavens. Currently isn't in development any more.

Horn of the Abyss[edit]

Another unofficial expansion pack adding more features, units, resources and another town. The official thread on Heroes Community.


Not actually a mod, but an attempt at rewriting the whole engine to make it customizable, portable and fully cross-platform. The official website of the project is here.

Game data[edit]

Configuration file(s) location[edit]

System Location
Mac OS (Classic)
It's unknown whether this game follows the XDG Base Directory Specification on Linux. Please fill in this information.

Save game data location[edit]

System Location
Mac OS (Classic)

Save game cloud syncing[edit]

System Native Notes
GOG Galaxy
As of GOG Galaxy version 1.2, and special HoMM III Complete patch 4.0 (CS)

Video settings[edit]

Graphics option Option Notes
Widescreen resolution
800x600 only; use Heroes3HD for resolutions up to 4000x4000.
Use Heroes3HD.
4K Ultra HD
Use Heroes3HD.
Field of view (FOV)
Desktop must be in 16-bit colour mode (press F4) or use the Heroes3HD mod.
Borderless fullscreen windowed
Anisotropic filtering (AF)
Anti-aliasing (AA)
Vertical sync (Vsync)
See the glossary page for potential workarounds.
60 FPS and 120+ FPS

Input settings[edit]

Keyboard and mouse Native Notes
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
See the glossary page for potential workarounds.

Audio settings[edit]

Audio options Native Notes
Separate volume controls
Music, Effects
Surround sound
Cutscenes only.
Closed captions
Mute on focus lost


Language UI Audio Sub Notes
Retail only.
Retail only.
Fan translation, download.


Multiplayer types

Type Native Players Notes
Local play
8 Hot seat
LAN play
Online play

Connection types

Issues fixed[edit]

Game crashes unexpectedly after some time[edit]

This is caused by a bug in the game, experienced only on multi-core or hyper-threaded processors. Newer GOG.com versions do not have this issue. It can also be resolved by using the HD mod.
Modify exe files[3]
  1. Download ImageCFG.
  2. Go into the installation folder and execute:
imagecfg -u Heroes3.exe
imagecfg -u Heroes3.icd
imagecfg -a 0x1 Heroes3.exe
imagecfg -a 0x1 Heroes3.icd


Another means of fixing sound can be found here.
Turn off in-game music[citation needed]
Set CPU affinity[3]
  1. Open the task manager.
  2. Set the CPU affinity for the game process to one processor.


This needs to be repeated every time when running the game.

Other information[edit]


Technical specs Supported Notes
64-bit executable


Middleware Notes
Interface SDL Linux only

System requirements[edit]

Operating system (OS) 95
Processor (CPU) Intel Pentium 133 MHz
System memory (RAM) 32 MB
Hard disk drive (HDD) 425 MB
Video card (GPU) DirectX 7.0a compatible
Mac OS
Operating system (OS) 8.1
Processor (CPU) PowerPC 603e 180 MHz
System memory (RAM) 64 MB
Hard disk drive (HDD) 425 MB
Operating system (OS) Kernel 2.2.x
Processor (CPU) Intel Pentium
System memory (RAM) 32 MB
Hard disk drive (HDD) 425 MB
Sound (audio device) OSS Compatible


  1. SafeDisc retail DRM does not work on Windows 10[1] and is disabled by default on Windows Vista, Windows 7, Windows 8, and Windows 8.1 when the KB3086255 update is installed.[2]