- NSIS Big Installer 3.08 https://sourceforge.net/projects/nsisbi/
- NSIS7z 19.00 https://nsis.sourceforge.io/Nsis7z_plug-in
- extract the 7z plugin in the NSIS install directory.
C:\Program Files (x86)\NSIS\ - Run NSIS
- Run "Compile NSI scripts"
- Drag the update or full .nsi onto the window
- For the installer to function it must be run in the same folder as as the 7z archive
- archive file name struture is
GAMENAME_patch_X.X_to_X.X.7zandGAMENAME_full_X.X.7z