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      Shadow-Mapper Beta 0.1.0

       by Shadow-Link

<kilian_steenman at hotmail.com>


With Shadow-Mapper you can edit the map of GTA: IV.

This program is a public beta, so it may not function as expected. Please ensure you make backups of all files you edit before you save.



  • Download Java(TM) Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 6
  • Copy the local_policy.jar and US_export_policy.jar to the "Program Files\Java\jre6\lib\security" folder (default)
  • Go to your GTA IV folder and make sure "read only" is ticked off
  • You can now start Shadow-Mapper.exe
  • The select install screen will show up
  • Click "Add Install" to add the IV installation you want to mod
  • Now browse to your IV folder you want to mod and select the GTAIV.exe
  • Give it a name
  • Select it and click "Select"
  • You can now edit the map

For an extended tutorial about how to use this program go to www.shadow-link.nl/?page=shadow_tut

Known issues

  • ZModeler models don't show up
  • Selecting water doesn't work properly sometimes
  • Selecting cars doesn't work properly sometimes
  • No collisions
  • Resizing the window doesn't work so don't do it
  • Some DXT5 rendering issues
  • Alpha issues


Version 0.1.0 -Initial beta release


A very special thanks to (in alphabetical order):

Aru, Cool Fire, DeXx, Gforce, JostVice, listener, Paroxum, REspawn, smokey8808, supermortalhuman, Tim (and everyone I forgot)

who have been invaluable in the research of game code/file formats which made this program possible.


This program is provided "as-is" without any implied warranty or support. Use of modified files during online play may result in being banned. Use at your own risk!