Building the installer

1. Visit the Python download page here: https://www.python.org/downloads/windows/, and click the link for the latest Python 3.8 release. Download and run the Windows x86 web-based installer. (Although Undo for FFG Games can run under 64-bit Python, these instructions and the installer were written for 32-bit Python.)

2. Download and install the latest 3.x version of the Nullsoft Scriptable Install System from here: http://nsis.sourceforge.net/Download.

3. Download VC_redist.x86.exe (Microsoft Visual C++ 2015-2019 Redistributable (x86)) into this directory from here: https://aka.ms/vs/16/release/vc_redist.x86.exe.

4. Double-click the build_installer.py file in this directory. The built installer (Undo_v3.0_for_FFG_setup.exe) will be placed in this directory.