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Breach 3

DOS - 1995

Year 1995
Platform DOS
Released in United States
Genre Role-Playing (RPG), Strategy
Theme Real-Time, Sci-Fi / Futuristic
Publisher Impressions Games
Developer Impressions Games, Omnitrend Software, Inc.
Perspective Top-Down
4.33 / 5 - 30 votes

Description of Breach 3

Breach is an early but detailed simulation of tactical level combat.

Breach 2, a newer revision, adds more details and fits as a tactical subset into Rules of Engagement through Omnitrend's innovative "Interlocking Game System." Easy to learn and fun to play, it was definitely ahead of its time. A design-your-own scenario option greatly extended the replay value. 4 years later and after Omnitrend's demise, Impressions picked up the engine and released Breach 3, an excellent update with campaign builder, scenario designer, and VGA graphics. It also integrates into Rules of Engagement 2, release concurrently.

Must haves for all armchair commanders who crave complexity and tactical realism.

Review By HOTUD

External links

Comments and reviews

zool 2022-11-05 1 point

The instructions from 'CRUXADER' are mostly correct. The terminology maybe a little confusing in 1 of his steps...
"*TDUJAM.EXE is NOT included in this download. You must manually copy and paste the files found in the following folders to the main B3 folder: VOI, SPRI, SCRE, SAMP, PALET, P, MU, HD, AN."

This step was a little confusing, but after running the game and getting the errors, it comes down to this.. Do not do anything here. If you unzipped the files in the same directory you installed from you don't have to move them again, leave them in the b3 folder as is with the folders contents. IOW, folder structure should be like this, c:\b3\voi etc...
After doing this, it should be possible to zip b3 folder after the install and upload it again here so that you don't need to run the install. All the new users need to do is unzip and run breach 3 from vanilla dosbox setup with c mounted by default to path where b3 was unzipped to.

seroster 2022-08-02 0 point


The Rules of Engagement 2 scenario has to have specific Breach maps associated with it. It's not an automatic process and the Breach maps are not automatically generated.

For example: you could create a ROE2 scenario and specify that Freighter A, B, and C are objects with IGS Links to Breach 2 or 3, then pick the Breach 2/3 map that the player will be brought to once they board Freighter A, B, or C.

It's not extremely difficult, but the entire process of campaign creation in ROE2 can be a bit daunting.

aa 2020-12-10 0 point

Can someone tell me how to get rules of engagement 2 to work with this game like with Breach 2? I heard there was a way to do it but its not working for some reason!!!

Sparkles 2020-03-15 2 points

*** Reposting - As folder structure spaces were removed ***
You need 2 folders - one for Hard Drive files, one for the CD-ROM files
You need to Mount one folder as a CD-ROM (D:)

Extract the "" file
Create 2 folders

copy or move all the unzipped files & fodlers to "CD-Driv\B3"
Need to make a CD-ROM, mount "CD-Driv" as D:__(so you have "D:\B3" folder)

my folder structure using DOSBOX
_+---B3__(*** C:\B3 ***)
_\---CD-Driv__(*** mount CD-ROM D: ***)
___+---HD__(*** Copy to C: ***)

Create a batch file in folder: "Breach-3_DOS_EN" e.g. "Breach3.bat"

====== Breach3.bat ========
mount D ".\Breach-3_DOS_EN\CD-Driv" -t cdrom

======= Install Applicaiton =======
Enter Source Drive Letter: D
Enter Destination Diver Letter: C
Enter Destination Path: C:\B3
-- File install successful --
Sound Setup
My Sound card is configured as: Sound Blaster Pro 16; Port:220; IRQ:7; DMA:1
-- Accept --
===== End Install Applicaiton ======

your DosBox "C:\B3" should now have the following filesi n it:

You need to copy all of the files required for the "C:", there is an "HD" folder with a *select group* of files and folders that was unzipped files

Copy all "Hard Drive (HD)" files and folders from "\Breach-3_DOS_EN\CD-Driv\B3\HD"
to Dos BOX "C:\B3" folder
This will copy a bunch of files and 4 folders,
the following folder should now exist: "\Breach-3_DOS_EN\B3\B3DATA"

Now you should be able to launch the game from C:
You need to have the CD-ROM mounted first as D:
I have a batch file in "\Breach-3_DOS_EN\" folder which I run through DOSBOX, DOXBOX automatically maps this folder as C:, so there is a "C:\B3" folder structure.

My Batch file to start the game: "Breach3.bat"
======= Breach3.bat =======
@echo off
REM *** Mount a CDROM Drive ***
mount D ".\Breach-3_DOS_EN\CD-Driv" -t cdrom
REM *** Only required for initial install and Sound setup ***

REM *** Start The Game ***
cd B3

forbidden64 2019-10-07 0 point

Try putting the file in the root game directory where the exe file is. Often if there is a path issue, the game will find it if it is in the same directory as the EXE. This is one of the work arounds for DOS software with pathing issues. In fact, if you compile a program and put every file in the same directory, it will never have any problem finding anything. The other possibility is that the zip was corrupted and you need to download again and reinstall. I have had this happen twice on this site. BTW, same same goes with early windows applications. If a DLL is missing and you don't know where it was supposed to go, put it into the application directory where the application resides.

SpaceToast 2019-06-08 0 point

I never had the chance to try this one "Back in the day". I love Rules of Engagement 2, and recently started playing it under DOSBox, so I figured I'd look for Brreach3 too.

After following Cruxader's instructions (Thank you, sir!), I have the same problem that "A" posted on 2018-06-04. When I start Breach3 in DOSBox 0.74.2, the game dumps back to "DOS" with the following error: "ERROR loading file b3\spri\equipmnt.edy". Google is no help with this error: ZERO results returned on a search for the exact-word error message.

The equipmnt.edy file *is* available in the path\location referenced in the error message, and since it lives in the "b3\spri" directory, it gets copied to the game's home directory of \B3 as per Cruxasder's instructions.

So far I have tried:
1. Re-running setup.exe to see if that file is modified by the setup process.
- Result: setup.exe doesn't change either copy of the file on my system.
2. Renaming each copy of the file (one at a time) and starting the game to see if
the file is created or modified at game startup.
- Result: The file is not created or modified at game start.
3. Viewing the the file contents:
- As expected, the file contents are binary - compressed or compiled?
4. Web search for info on the specific error message, and the .EDY format in
- Result: Google says "I got **NOTHIN**!"

My next step is to create a test directory, install a clean copy of DOSBox and Breach3 in that location, and see if there are any differences between the "test" install and the "problem child" install.
Any other ideas on things to try are definitely welcome!

Thanks for making this available, and for the community comments and tips!

$Tex 2019-03-26 0 point

This is a good game! Best of them all even if its Real Time instead of Turn Based and yes it is awkward. But its awesome!

One problem. Can't seem to get it to work with Rules of engagement 2
Anyone know how to do that?

Rolland Bretar 2018-11-08 1 point

This is a great game! Its awkward yes and its in real time but its awesome! Never gets boring!

Kyle P 2018-06-08 0 point

I was able to get it working thanks cruxader. But listen, B3 has to be capitalized its case sensitive. Also, you don't cut the files you copy them to the B3 folder don't cut and paste just copy, they need to remain IN THE FOLDERS for the game to work.

Thanks again ya'll!

a 2018-06-04 0 point

HEY! Something's wrong! Everytime I try to get it to work it says fatal error insturments.eby does anyone know the solution to this??? I miss this game so much!

ChuckDeNomolos 2015-02-07 -2 points DOS version

Followed Cruxader's instructions and it worked - cheers!

Erik 2014-09-07 -2 points DOS version

Couldn't get it to work either, but maybe i just don't have the time to spare to tinker around with this

Fazerix 2014-06-02 -2 points DOS version

The Breach3.exe file is in a folder named HD. When you try to run it it gets an error for the sound (maybe because it is the CD version) even after you run the setup. There is no exe file in the main menu and if you cut and paste the breach3.exe it still won't run.

Cruxader 2013-11-15 0 point DOS version

Forgot to add:
-For the copy and paste it's much quicker to do it in Windows/MacOs/Linux than in DosBox.

-You have to run INSTALL.EXE and SETUP.EXE in DosBox.

Cruxader 2013-11-15 7 points DOS version

Wanted to add this to help folks out.

1. Make sure the folder/directory that you Unzip the game in is B3. The game will not work if you have a different name on the folder.

2. Open the TDUJAM.nfo file in notepad or similar.

3. You'll see the following installation directions, somewhere in the mess of ASCII characters.

-Run TDUJAM.EXE to decompress the game.*
*TDUJAM.EXE is NOT included in this download. You must manually copy and paste the files found in the following folders to the main B3 folder: VOI, SPRI, SCRE, SAMP, PALET, P, MU, HD, AN.
*The B3DATA, B3GAMES, CAMPAIGN, DRIVERS folders which you copied from the HD folder to the B3 folder do not have to have the files found INSIDE of them copied to the main B3 folder.

-Run INSTALL.EXE to install and enter the drive letter (99% of the time this is C in DosBox) you decompressed to for the destination drive, and keep the default directory \B3.

-Run SETUP.EXE to setup your sound. Usually SoundBlaster and the top choices for the sound channels etc should work.

-Run BREACH3.EXE to play. IN DOSBOX!

Hope this helps. This game is quite cool.

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DOS Version

Game Extras

Various files to help you run Breach 3, apply patches, fixes, maps or miscellaneous utilities.

RefcardEnglish version 433 KB MiscEnglish version 7 MB

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