Modathon

GECK Extender Mod

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GECK Extender mod for Fallout: New Vegas
Latest13 Feb 2026
Uploaded10 Feb 2026
Version0.50
7.05 MB
Total Files Sizes
0
Unique DLs
0
Total DLs
3
Total Files

GECK

File Size5.19 MB
Game Image for Fallout: New Vegas
2
Utilities

GECK Extender

The GECK Extender is a project to extend the functionality and fix bugs

in the Garden of Eden Creation Kit for Fallout: New Vegas


Usage:


Download a fresh GECK from either steam or geckwiki.com

Replace GECK.exe with the provided one (this is now required)

Install the extender plugin


Installation:


Install with an appropriate mod manager or manually move the NVSE folder in to your Data folder.

Remove any previous version of GECK Extender (GaryHax.dll).

Remove any version of GECK Power UP you may have installed.


Compatibility:

Compatible with all NVSE script extender plugins.

Do NOT use with GECK Power Up or GECK Power Up Fork. GECK Extender supersedes them.


Note: The marker hack has not been recreated, this was fixed in the official GECK.


Features:

  1. User handle memory leak fix, no need to close opened windows from the open windows dialog
  2. Increased frame rate in editor and preview windows
  3. Ability to select Big Guns as a weapon skill (for use with JIPLN)
  4. Console log with limited interactivity (double click formid's to open them) with menu to control behavior
  5. Re-enables 1220 Warning, Error, and General messages
  6. More verbose messages in many cases
  7. Re-enables script compilation errors
  8. Enable ESM as active file with ONAM preservation, no need to change your mod to an esp
  9. ESP masters are preserved and added when making/editing plugins
  10. Monospace font in script editor (consolas), enable via ini setting
  11. 512x512 Landscape texture/normal generation. enable via ini setting
  12. Crash fix when bUseMultibounds=0 is enabled when opening worldspaces with multibounds, changing the ini setting is no longer needed
  13. Spell Checker enable/disable menu option
  14. Crash fix when editing the Rock-It Launcher in TTW
  15. Optional fix for Windows 8/10 not displaying conditions correctly, enable via ini setting
  16. Fast Exit
  17. Script size limit doubled
  18. Scriptlet window sizes increased to prevent scriptlets being accidentally truncated
  19. Help links point to regularly maintained community wiki
  20. Faster dialogue and package edit windows
  21. Smooth render window flycam
  22. Up/down keys for render window flycam
  23. Option to swap Y key to C in render window, as in the Skyrim Creation Kit
  24. Toolbar Time of Day slider (optional)
  25. Option to skip unmodified forms when generating facial animation files
  26. Bug fixes
  27. Playback Speed slider in the Preview Window
  28. Crash save functionality (not compatible with NVAC)
  29. Object Palette Randomisation
  30. Handle limit fix
  31. Reduced memory use option (disables mirroring of textures in ram)
  32. Toggle for hiding forms that aren't from the active plugin in the objects window
  33. Play a sound when dialogue export is finished
  34. Restore debug light count shader (with option to automatically show areas over 6 lights)
  35. Speed up the dialogue menu
  36. Disable zlib compression for TESNPC and TESObjectLAND records
  37. Allow opening meshes outside the Data\Meshes Folder
  38. Fix imposters not showing in editor
  39. Fix crash when clicking on Regions Editor without an esp loaded
  40. Replaced heap and IO methods for a significant performance improvement
  41. Recursively load masters to prevent freezing mods cleaned in xEdit



Source:

See downloads or GitHub .


Credits:


Many thanks and kudos to purplepidgeon and hlp for the GECK PowerUP which inspired me to create this.


Many thanks to shademe for CSET extender which also inspired me to create this.


Many more thanks to nukem, hlp, jazzisparis, luthien anarion, and carxt for helping me learn C++, encouragement, and providing endless help and code to make this project a reality.


Thanks WallSoGB and iranrmrf for features in 0.39.


No thanks to InTheGrave for bugging me to release version 0.48.


Thanks to hlp for the active ESM, and ESP as master patches which are used with permission.

Instructions

Install GECK for Fallout New Vegas from the GECK Wiki download (required)

Replace the GECK.exe in the game folder with GECK Extender's GECK.exe (required)

Install the GECK extender plugin and ini file with your mod manager of choice, MO2 recommended (required)

Visit the author channel on the TTW discord to download additional assets from the pinned comments

Requirements

Permissions and credits

No permissions have been set

GECK

Type: Main
Date uploaded10 Feb 2026
File Size5.19 MB
Unique DLs0
Total DLs0
Version0.50

GECK replacement executable

GECK Extender

Type: Main
Date uploaded10 Feb 2026
File Size1.85 MB
Unique DLs0
Total DLs0
Version0.50

xNVSE plugin

GECK Extender Config

Type: Main
Date uploaded10 Feb 2026
File Size7.96 KB
Unique DLs0
Total DLs0
Version0.50

Configuration file for GECK Extender plugin