Master of Orion

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Master of Orion
Master of Orion cover
Mac OS MacSoft
Release dates
DOS September 6, 1993
Mac OS (Classic) 1995
Windows (DOSBox) April 20, 2010[1]
macOS (OS X) (DOSBox) November 29, 2012[2]
Linux (DOSBox) May 12, 2015[3]
Monetization One-time game purchase
Modes Singleplayer
Pacing Turn-based
Genres 4X, TBS
Themes Sci-fi, Space
Series Master of Orion
Master of Orion guide on StrategyWiki
Master of Orion on MobyGames
Master of Orion on Wikipedia
Master of Orion
Master of Orion 1993
Master of Orion II: Battle at Antares 1996
Master of Orion III 2003
Master of Orion (2016) 2016

General information Orion Forums - Official forums, has a subsection for the original classics Community Discussions for game series Support Page
Steam Community Discussions
Realms Beyond - Has a subsection for the series (particularly the classics)
The Orion Nebula


Version differences[edit]

The pre-alpha/software pitch version of the game was actually known as Star Lords. It has some slightly different graphics and some races have slightly different names.

Essential improvements[edit]

Run in DOSBox[edit]

To improve DOSBox performance make the following changes to the DOSBox configuration file:

  • Change core=auto to core=dynamic
  • Change cycles=auto to cycles=max


The latest official patch is version 1.3, which can be found here. Note that the digital releases are fully updated, thus the update file is unnecessary on said version. An unofficial 1.4m is also available for download here. The original thread where it was discussed and created (download link dead) can be found here. There is also a 1.4n patch here, which is slightly newer than 1.4m. Note that 1.4n requires 1.4m to be installed first.
In addition to the above there is a fix that adds Gravis UltraSound support available here. For more info on getting GUS working, see DOSBox. A map editor is also available here.


1oom is a GPLv2 game engine recreation that runs on Unix (Linux), Windows and DOS. It requires the LBX files from MOO1.
Does not require DOSBox. Extra features include larger galaxy view resolution, mouse wheel support, planetary governor for less micro, space combat autoresolve for skipping boring battles, hotseat multiplayer, and quality-of-life streamlining.[5]
Installing 1oom
  1. Download the latest Binaries.
  2. Extract the archive to another folder.
  3. Copy your MOO1 LBX files to the folder where 1oom was extracted.
  4. For Windows, Run either 1oom_classic_sdl1.exe (For Older Computers) or 1oom_classic_sdl2.exe (Recommended. For Newer Computers. )

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game> (mounted in DOSBox)[Note 1]
Mac OS (Classic)
macOS (OS X) <path-to-game> (mounted in DOSBox)[Note 1]
Linux <path-to-game> (mounted in DOSBox)[Note 1]
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
Windows <path-to-game> (mounted in DOSBox)[Note 1]
Mac OS (Classic)
macOS (OS X) <path-to-game> (mounted in DOSBox)[Note 1]
Linux <path-to-game> (mounted in DOSBox)[Note 1]

Save game cloud syncing[edit]

System Native Notes
GOG Galaxy
Steam Cloud


In-game options menu.
In-game options menu.

Graphics feature State WSGF Notes
Widescreen resolution
4K Ultra HD
Field of view (FOV)
For DOSBox toggle with Alt+ Enter (see the glossary page for other workarounds).
Borderless fullscreen windowed
See the glossary page for potential workarounds.
Anisotropic filtering (AF)
Anti-aliasing (AA)
Vertical sync (Vsync)
For DOSBox use an unofficial build (see the glossary page for other workarounds).
60 FPS
120+ FPS


Keyboard and mouse State Notes
For DOSBox use the DOSBox Mapper (see the glossary page for other workarounds).
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
For DOSBox use the DOSBox Mapper (see the glossary page for other workarounds).


Audio feature State Notes
Separate volume controls
Surround sound
Closed captions
Mute on focus lost
For DOSBox change the priority background value in the DOSBox configuration file.


Language UI Audio Sub Notes
Fan translation by «Бюро переводов Old-Games.RU»


Multiplayer types

Type Native Notes
Local play
See 1oom for hot seat
LAN play
A fan made "multiplayer project" was once attempted but later abandoned. After a server failure on the mods original host site, a map editor (same one listed in essential improvements) is all that remains of the project.[6][7][8]
Online play
See note above.

Other information[edit]


Technical specs Supported Notes
DOS video modes VGA

System requirements[edit]

Minimum Recommended
Operating system (OS) 3.3
Processor (CPU) Intel 386 16 MHz
System memory (RAM) 3 MB
Hard disk drive (HDD) 14 MB
Video card (GPU) VGA graphics card
Minimum Recommended
Operating system (OS) XP, Vista, 7, 8
Processor (CPU) 1 GHz
System memory (RAM) 256 MB
Hard disk drive (HDD) 14 MB
Video card (GPU) DirectX 7 compatible
macOS (OS X)
Operating system (OS) 10.6.8
Processor (CPU) Intel Core Duo 2 GHz
System memory (RAM) 1 GB
Hard disk drive (HDD)
Video card (GPU) 64 MB of VRAM


  1. 1.0 1.1 1.2 1.3 1.4 1.5 File/folder structure within the installation folder reflects the path(s) listed for DOS game data. For the release, file changes in DOSBox are redirected to <path-to-game>/cloud_saves/ even if GOG Galaxy is not used (this folder contains all redirected files, so some files in the cloud_saves folder might be temporary files or other files that do not contain saves or settings).