The HaZardModding Coop Mod allows you to play the Single-Player Story and all the Secret levels Co-Operatively in Multi-Player. Supporting up to 8 players via LAN or Internet. Each Player can chose one of 3 Classes with specific abilities, to support the Team. Using the Tricorder primary scan mode when close to a Player, will activate the specific Class ability.

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This Tutorial assumes you have successfully installed the game with administrative privileges.

For most users that would be by default in C:\Program Files\Activision\EF2\

1. Patch to Version 1.1
2. Rename for better performance
3. How to play online
4. Best Mods
5. Installing Maps/Mods
6. pk3 and Gamefiles
7. Console Commands
8. Full HD 1920 x1080 and other resolutions
9. Useful Tools and Websites
10. Contact someone to help you


At first you should patch the game to the version 1.1 with the official patch. The patch fixes issues with the game and enables you to play on-line, because all the community servers are with patch 1.1.

The only official patch 1.1 is about 25MB in size and provides you with 4 new Multi-Player Maps. But it also renders your previous save games invalid, so you should install it before you start to play the Single-Player or once you have completed it.

You can download the patch from these Websites


I recommend that you rename your ef2 executable to quake3, for better performance. The reason is how OpenGl is handled by the Graphics-Card driver.

Renaming the ef2.exe to quake3.exe will resolve a number of issues and have a massively positive impact on the game its performance.

I recommend, you make a copy of the ef2.exe and rename that copy to quake3. You also need to start the game using the quake3.exe, the shortcuts the installer created for the game link to the ef2.exe, you can either update them or have them removed and create new shortcuts.

You might not see the file extension .exe, then rename the ef2 file with approximately 2,3 MB in your game its installation folder, the other ef2 file is just a icon.


Like it is common with older Games, the Master Server of Elite Force II is no longer reachable. So the game will not be able to list you any Internet Servers. This can be fixed.

The Elite Force II community has a own Master Server, that was provided by GSIO01 and is hosted by the More details:

You can download the Master Server Patch from these websites

If you connect to a Online server and get the Error that reads: Coudn't Load maps/*mapname*.bsp, you are missing a map. You can search on the Internet by using both, the name of the game an the name of the map.


There are more than 2 GB of Custom made content for Star Trek Elite Force II, very little of it is currently online. The Most notable Modifications for the game in alphabetical order are:

A Gate two Birds and the Beautiful Sky (Singleplayer)

Dual Languagepack Version 2.0 (Change to German or English)

HaZardModding Coop Mod (Play Game Story Together)

HD Fest (Textures)

The Aftermath Episodes (Singleplayer)

The Return of the Empty Crown (Singleplayer)


Maps and Modifications usually go inside the game its base folder, default is:
C:\Program Files\Activision\EF2\base\

Note that some Modifications have a impact on your Singleplayer and Multiplayer expiriance, some Modifications can even make your Singleplayer entitly different or get you stuck. So you should make a backup of the EF2 Main folder (C:\Program Files\Activision\EF2\).

Usually Maps and Mods come in pk3 files, some maps and mods are not that neatly packed. So you are adviced to read the Instructions and Readme of any Mod you are installing, they can contain valuable information, without these you might not get the Mod/Map working.

For the most Maps using the map or devmap Console Command will do the trick, the mapname can be obtained from the *.bsp file inside the (pk3) maps folder, if it is not provided by the creator of the Map.


PK3 files are just plain Zip-Archive files renamed to pk3, and as such can be opened with any Archiver like 7-Zip, Win-RAR or any other Archiver.

Be careful not to edit any of the PK3 files on accident, any make backups of any files you change.

Each asset has its own folder, models, textures, sounds, maps and so forth. If you are installing a new map, you need a least the *.bsp, it will go into the folder maps:
C:\Program Files\Activision\EF2\base\maps\

If you don‘t have that folder yet, create it. Optionally the Map/Modification also provides you with additional files. It is best to keep the provided folder structure of the mod as it is.

If you are unsure which pk3 files are native to the game, sort the files by modification date, this way you can also find and remove mods again. (Unless you have modified the original game pk3 files)


The Game Console allows you to enter commands that would otherwise not be available to you, if not provided by a Menu.

You can open the game Console via a specific Key on your Keyboard while you are in-game. This will not work with the Demo version of EF2.

The Key to Access the console depends on your Keyboard Layout and Language. Please try the following Keys while you are in the main Menu of the game: ^ , °, ², ³, @, <, ~ or '

The in-game console should appear as grey, slightly transparent overlay. You can only paste text you copied outside the game into the game console, by pressing the middle mouse button.

To get text from the console you need to either activate the logfile that will be saved in your game its (base) folder. Or if you have cheats activated you can have a separate console window from which you can copy the text.

Many commands previously enabled, can be disabled by setting a 0 as parameter or by using the exact same command again.

To load a map with cheats enabled use: devmap mapnamehere
To activate the logfile (username_console.log) use: logfile 1
To show your current frames in game, use : fps 1
To quit your game (if stuck in loading screen) use: quit
To restart a map use: restart
To restart the renderer: vid_restart
To take a screenshot ingame press: F11
To take screenshots without the text enter once: bind F11 screenshot silent
To get all weapons with cheats use: give all
To set your health with cheats use: health 77
To show a separate console window with cheats use: viewlog 1
To overcome unintentional obsticals with cheats use: noclip
To become damage resilient with cheats use: god


You can set a custom Video Resolution in EF2 like with every other id-Tech 3 (Quake3) Engine based game. By accessing the game its console and typing the following commands:

To allow custom resolution: seta r_mode -1
To set custom width: seta r_customwidth 1920
To set custom height: seta r_customheight 1080
To set custom aspect: seta r_customaspect 1

Custom Aspect Examples:
4:3 = 0 (ie.: 1024x768)
16:9 = 1 (ie.: 1920x1080)
16:10 = 2 (ie.: 1920x1200)

Once you have finished, you can either quit the game and start it again or use the console command: vid_restart

Note: Some resolutions will work while the game is Windowed , but not while in Full Screen.
(use ALT + ENTER on your Keybord while in game to switch)

If your game doesn't start any more after this, it will again, if you delete all the *.cfg files that are in the C:\Program Files\Activision\EF2\base\ folder. And ONLY the files directly inside the base folder. If you delete *.cfg files from any other folder, like for example the C:\Program Files\Activision\EF2\base\global\ the game will no longer start.

I also recommend to disable Stencil shadows, because they are buggy. In game click on Advanced at the game its Video settings Menu, and set the shadows option to Simple.

If your game is freezing or lagging on a specific Level/Map or at some areas of a Level, this could be caused by a very to high Framerate, which could be around or above 333.

You can fix this by either:

  • Disabling 'nVidia Antialiasing', in the Advanced Video Settings
  • Disabling 'Full Screen Antialiaising', in the Advanced Video Settings
  • Activating 'Monitor Synchronization', in the Advanced Video Settings
  • Using a in-game console command: 'seta com_maxfps 90'
  • Renaming the ef2 Executable to quake3


To view and create textures/screenshots

To open or create pk3 files
7-Zip -

To open or create level-scripts
Notepad++ -
Visual Studio Code -

To open or create maps
Übertools EF2 SDK (Source + Level Editor ) -

Updated ef2 server side code
EF2 C++ Source Code Updated: -

BSP to MAP decompiler - If you lost your *.map files
(decompiling maps without author permission is forbidden)
Will Fowlers BSP-Decompiler

Will Fowlers BSP-Decompiler is the best and most accurate decompiler for Elite Force II, the only two issues with this compiler are:

  • Sky textures are wrong using: special/sky, should be textures/common/skyportal
  • Texture alignment and scale information is lost, all textures need re-adjustment

The Sky Texture problem can be resolved by opening the *.map sourcefile with a Text Editor (Notepad++) and replacing all the strings special/sky with: textures/common/skyportal

Websites, usefull/related Star Trek Elite Force 2


I have seen many people that couldn't resolve their issue with the game by them self. Posting comments on unrelated or dead Forums and Websites. Elite Force II is a old game, many experienced gamers know games like this from their childhood and how to handle these old games.

If you have a friend that might know something about games that existed before platforms like Valve its Steam became standard, ask him or her.

If your game doesn't start any more it helps in most cases, if you delete all the *.cfg files that are in the C:\Program Files\Activision\EF2\base\ folder. And ONLY the files directly inside the base folder.
If you delete *.cfg files from any other folder, like for example the C:\Program Files\Activision\EF2\base\global\ the game will no longer start.

Try to search on the internet for how to resolve your issue, I am pretty sure you are not the first Person to run into troubles with a game.

If nothing of the above helped, contact me, I am pretty sure we can work it out together. Please note that it may take a few days until I get back to you.

Via ModDB:
Via Facebook: @HaZardModding

Version 6.04 of the Coop Mod is here!

Version 6.04 of the Coop Mod is here!


Version 6.04 features over 400 changes. Many issues of 6.03 have been fixed and even more new features have been added.

HZM Coop Mod, 6.04 release planned this December

HZM Coop Mod, 6.04 release planned this December


We are currently making the last changes and are testing the new features for the HaZardModding Coop Mod 6.04.

EF2 HZM Coop Mod 6.02 - Updater Tool

EF2 HZM Coop Mod 6.02 - Updater Tool


Even thou there have not been many News lately, we have massively improved the Code of the coop mod and fixed many issues of the Coop Mod and the stock...

EF2 HZM Coop Mod 6.01 BETA + Benefits

EF2 HZM Coop Mod 6.01 BETA + Benefits


The new version is here, this took a little more than a year, but it was worth the wait. Version 6.01 BETA is written in C++ which gives the Modification...

Add file RSS Files
Master Server patch for Star Trek: Elite Force 2

Master Server patch for Star Trek: Elite Force 2


This program will patch your EF2 main executable, so that it will use the new community Master Server. You will then see Internet Servers inside the game...

HaZardModding Co-op Mod 6.04

HaZardModding Co-op Mod 6.04

Full Version

Fixed many critical bugs and added many new features, Such as checkpoints. Over 400 changes to version 6.03.

Elite Force II - Fixed C++ Game Source Code

Elite Force II - Fixed C++ Game Source Code

Source Code

This code has been patched by GSIO to work with VisualC++, tested in VC 2005 and VC 2010. This is the game source for Star Trek Elite Force II. The package...

Star Trek® Elite Force II - Official Patch 1.1

Star Trek® Elite Force II - Official Patch 1.1

Patch 2 comments

Latest official Patch for Star Trek® Elite Force 2. No re-validation require. You can install the patch without re-entering your cd-key!

HaZardModding Coop Mod Readme

HaZardModding Coop Mod Readme


The Readme that is included in the latest Coop Mod release. Except that this version of the Readme is updated as soon as there are more Details added.

HaZardModding Co-op Mod 6.03

HaZardModding Co-op Mod 6.03

Full Version 7 comments

Version 6.03 released 2017.07.09, with improved stability, many new features and bug fixes. EDIT: Fixed Zip-Archive

Comments  (0 - 10 of 43)

even i am not a fan of freemasonic nasa and their fake globe model/lies,
i really enjoy star trek AND THIS MOD deserve much more credit imao
specialy when you have made it almost alone !

well done !!!

sehr gute Arbeit & Danke vielmals

this mod is pure Qapla'

Reply Good karma Bad karma+1 vote
Chrissstrahl Creator

Thanks a lot ;)

Reply Good karma+1 vote


When I went to install Stef2_HZM_coop_mod_601b_eng.exe it says STEF2 is not installed in this directory. I selected the root folder for Elite Forces 2. Not sure how to fix.

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Chrissstrahl Creator

Hi, it goes much faster if you use the actual contact functions, because I do not get notified of new comments on Moddb.
That seams to be a error with the installer, you need to make sure that the path the installer shows you is exactly like the path you have your game in. The installer sometimes adds \EF2 to the path you selected. Sorry for your trouble, but it might cheer you up to hear that there will be a updating tool soon, that will replace the installer and allow you to update the coop mod by a click of a button ;)

Reply Good karma+1 vote

Wow, you guys are still going. +9001 for determination :)

Reply Good karma Bad karma+2 votes
Chrissstrahl Creator

Thanks, we have a few plans, for the Mod, a GUI based Server Start Tool (The UI is already done), more maps from other (singleplayer) mods. Finally the RPG Enterprise E as a Coop Map, with tons of interactivity.

Reply Good karma+1 vote

Helo crisssthrahl, the cgynus mod is complate? playable?
Can i help you finishing the mod?

Reply Good karma Bad karma+1 vote

Hey Rico, Sorry it's taken a while to get back to you; I'm not often on ModDB so hadn't seen your message until today ^^;

Cygnus is still very incomplete atm, a lot of the mapping work that is complete needs polishing and most of decks 3-5 aren't yet done. I've started to take it more in the direction of a full single (possibly multi with Chrisss' help!) player story line, and a lot of my more recent work has been on creating example maps for the story line.

If you're interested in potentially helping with development then drop me a PM and we'll talk about it :)

Reply Good karma Bad karma+2 votes
Chrissstrahl Creator

I am not the Developer of the Cygnus Mod I'm just a bit involved in it. How ever, I have notified the Developer about your Comment, maybe he will soon reach out to you.

Reply Good karma+1 vote

Star Trek and FPS - my two favorite things combined. Now I can share it w/ a friend. Kudos!

Reply Good karma Bad karma+5 votes
Chrissstrahl Creator

Let me know if you have any difficulties.
Enjoy ;)

Reply Good karma+1 vote
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