These builds are from unmodified freeciv main (development version of 3.4)
commit
44dc5d5c69
sources.

They are built using msys2 environment
msys2-freeciv-win64-260927.7z,
available from
https://files.freeciv.org/packages/windows/msys2/

These need at least Windows 10,

These builds include installers of
- gtk3.22-client
- sdl2-client
- sdl3-client
- gtk4-client
- gtk4x-client
- qt6-client
- qt6x-client
- ruledit (based on Qt6)