PKG files are the MacOS version. Make sure you have the correct OS listed under "System" before downloading (assuming this is from the website and not Galaxy).
The Epic Pinball version should be 2.1HF for windows (it is 2.1GOG for Mac)
Clicked on windows 10 still aint downloading the windows version.
I am not sure how to help here then. On two systems, a Mac and a Windows system, I can select Windows (does not say Windows 10...) and it downloads the offline .exe installer just fine. Included picture of doing so on Mac.
Well, tried including picture.... does not seem to be uploading... got it, apparently PNG image files not supported.