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Pax Imperia

Your rating: None Average: 4.9 (10 votes)
Year released:
[www].se [ftp].se [mirror].us [mirror].de
pax_imperia_floppy.sit (2.11 MB)
MD5: 266940c28401c53f57450f6cba85b6f9
For System 6.x - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
pax_imperia_cd.sit (1.91 MB)
MD5: 1ac73cf1b002b3dac81c054d493892a5
For System 6.x - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
pax_imperia_upd_1.02.sit (220.53 KB)
MD5: a438fd7a0238ae1b798fb7d67fd3386e
For System 6.x - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
pax_imperia_upd_1.5.sit (1.86 MB)
MD5: 4bbdf56ef02db42b46f046f023155388
For System 6.x - Mac OS 9
This game works with: Basilisk II, Mini vMac

Here is a Mac-exclusive game of galactic conquest. What follows is a description from


Pax Imperia is a classic turn-based science fiction space empire game, of the type often referred to as '4X' games (Xplore, Xpand, Xploit, and eventually Xterminate other galactic civilizations), that was unique for its time in its detail and complexity (and still has been outdone by few games since). It was only released for the Macintosh, and left many waiting for a promised sequel for five years until 1997, when Heliotrope Studios put out Pax Imperia: Eminent Domain (also known as Pax Imperia 2) for both the Mac and Windows platforms (published by THQ and Atari respectively).

Pax Imperia was particularly beloved for its detail and complexity, in ways reminiscent of MicroProse's Master of Orion series, Mare Crisium's Stars!, and Koei's series of empire-building strategy games. It was also, sight virtually unseen in most such games, playable by up to sixteen human players.


Noteworthy elements of gameplay aside from the usual fare for games of its ilk (i.e. starship combat and exploration, colony-building, economics, etc.) included:

Anyone who has played later science fiction '4X' games -- and particularly Quicksilver Software's ambitious (and bugridden) Master of Orion 3 -- is likely to see that many intriguing and complex aspects of gameplay, some of which may have seemed pioneering in a modern computer game industry environment in which simplicity is the order of the day, had already been seen years earlier in Pax Imperia."


See also the Games of Fame page for Pax Imperia.

Architecture: 68k


anasazi4st's picture
by anasazi4st - 2013, December 26 - 12:18am

Thanks for the Christmas present! I've been looking for both Windows and Mac apps for weeks now that would allow me to do what Virtual CD Utility does--open and mount the Pax Imperia .DSK and play the game
I would ask how I could burn the resulting game to CD...but I figured it out. I copied it to a USB drive and put that into another Mac running Classic, and was able to burn the CD that way (the files had been locked). I collected, converted and burned all the different versions (CD, floppy and 1.5 'Unofficial update') to a CD.

Thanks again for the MONUMENTAL help!

Daxeria's picture
by Daxeria - 2013, December 24 - 7:50pm

This utility is all you need to mount most of the DSK, ISO, and Toast images on this site.

anasazi4st's picture
by anasazi4st - 2013, December 24 - 7:15pm

I know it's been more than two years since your post...but WHERE is this archive you mention?

Also...does anyone have a copy of the ORIGINAL "Pax Imperia" (it was Mac only, from 1993 I believe) that they can share? I know that this kind of request usually runs up the red flag for piracy and copyright infringement and can get a user banned from a site--but this game is generally considered to be "abandonware" and isn't available anywhere that I've found. Its sequel, "Pax Imperia: Eminent Domain" is all over the place. I have a copy of that (for both Mac and PC), so I don't need that one.

The copy that's available for download here is a .DSK image. I've spent much of my spare time this past week trying to get it into a format that I could use to run it on my TiBook Mac G4 running OS 9 (the real OS, not Classic). So, if no one has one to share, does anyone at least have a way to make a CD or even a disk image that I could use for that? I have a Dropbox account, so moving it from computer to computer shouldn't be a problem.

Thanks in advance!

Maury Markowitz's picture
by Maury Markowitz - 2012, February 21 - 7:57pm

I just finished up playing this under Sheepsaver. This might sound like one of those old retrogamer sayings, but honestly, this game is still fun. Seriously fun. It desperately needed better victory conditions (the computer should give up at some point, not just "go to zero") and there's little things to fix here and there, but generally speaking this is still one of the best 4X games I've played.

MCP's picture
by MCP - 2012, January 11 - 6:58am

It follows that something called the Master Control Program would enjoy 4X games, don't you think? Evil

Arthegall's picture
by Arthegall - 2012, January 11 - 2:51am

You're a beast. We must have played a lot of the same games back in the day.

MCP's picture
by MCP - 2011, September 4 - 2:32am

Now available is a new archive featuring the original floppy version with PDF docs, a later compilation CD version with its own online docs, and an unofficial update that fixes some of Pax Imperia's incompatibilities with later OS versions.