Posted on 28 Comments

1985: Deadly Northern Lights VASSAL

The VASSAL Module for 1985: Deadly Northern Lights is finally here!

Being a monster game, we have a monster module. Due to size and security measures, we had to create zip files containing zip files. Follow these steps to create the module and start your Scandinavian campaigns:

1. Download the two parts of the module:

2. Unzip the two files in the same directory. This will create two files named 1985 and 1985 DNL.z01

3. Unzip the 1985 file only.
This will create the final 1985 DNL.vmod module by combining the zip and z01 files.

A big thanks to our Combat Engineer John Rainey, to our lead playtester Dominik Häufler and to the others who made this possible!

EDIT 20210827 ZT: Module has been updated to version 1.02, adding missing Convoy markers, Hide Pieces Button and more. You will need the latest version of VASSAL to use it.

28 thoughts on “1985: Deadly Northern Lights VASSAL

  1. Awesome work. Now I can play the game that takes up so much space in my “dungeon”.


  2. Nope, it didn’t work. I’ll have to play with this later, but it comes up with unspecified error.


    1. Same, the 1985 file is unable to run/unzip and combine the two because it is an “unsupported format”. I will retry with a fresh download later.

      1. Chris, you don’t have to combine the two. Download the two files, unzip both, then unzip 1985 only. The 1985 DNL.z01 file is unzipped automatically.

        1. Haha, kind of like the rule book!

          I’ll try again over the weekend. Kudos to those who put this together. I’m sure many will greatly appreciate the chance to play it. Although I prefer pushing cardboard….

      2. Chris, I am getting the same error. Did you ever get it to work? I downloaded again just today.

    2. OK, I got it to work. Great job.


  3. She’s a monster. I did not know you could do this type stuff with zip files etc. Interesting.

  4. Looks great fellas. Nice job and congrats to the team!

    For others I had to play with it in a Windows VM a bit to get it Mac-ready but otherwise it looks great!

  5. Well done!
    I’ve built some monster Vassal modules in the past with maps pushing obscene amounts of bits. Did not know this Zip technique for moving them. Thanks much. Worked well and very straightforward instructions thank you!


  6. Cant download it , i have checked all i can check but it dosent download….

    1. Try right-clicking and select “open link in a new tab”

  7. great i can now download but i am not able to understand how to open
    1) i create a new map and put both a and b modules in that map
    2) i extract the files and get the files you describe
    3) when i click the vassal mod io get (if i can translate right)”unable to load cant find target-file”

    1. No map creation, no putting the modules into the map. There’s only one module file, simply unzip following the instructions. This means that you don’t have to unzip 1985 DNL.z01 manually, it’s done automatically.

  8. dont understand this ….. it says that 1% is downloaded or is it downloaded in zip with just 1% ?
    Anyhow… i dont get it to work sadly enough………..


  9. it seems that when i try to load the game, it cant find where it should belongs to or something ?????
    cant find target-file

  10. are there any viruses…. ? now i am not able to throw my downloaded zip- files in the paperbasket so i cant get rid of them…. now they block each other…. LOL

  11. no have to give up on this one sorry … but it would have been so nice to see it but now my desktop is completely full of downloaded zip-files that i cant get rid of

    Have a nice evening…..

    1. I’m sorry Jerry, I’m out of solutions. I’ve followed the instructions again and they’re working.

  12. but the instructions is just : download and unzip…. ?

    1. Basically, yes. You may find the instructions on this same page. Follow them exactly and don’t improvise 🙂

  13. but the first instrucyion say that you should put them in the same directory
    and the second instruction say that you dont have to have them in the same directory

  14. nope , now i give this up, thanks for trying to help.

  15. I had a lot of trouble getting this to work on my Mac. In case anyone else has had the same problem, the following finally worked for me.

    Download the two files into a folder.
    Unzip them. You should now have the additional two files.
    1985 DNL.z01

    Rename them

    Open a Terminal session and navigate to the folder containing the files.
    Run the following commands

    cat 1985DNL.* >

    You may get some error messages but at the end you should have the module file in the folder.

  16. anyone who can explain it on a windows 10 machine ??
    Cant get it to work

    1. Hi Jerry, I have a windows 10 PC 🙂
      Follow the instructions to the letter, nothing is missing. Also, be sure to have the latest VASSAL version.

      1. Got virus last try
        Dont now how it happened i just tried to open files but i got something that Said my computer got infected
        So No more try
        And i did as it stood

        1. Some browsers could issue a warning as the download zip file is too big to be scanned.

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