I have the files repacked to an sfx-arch and resubmitted. It contains wrappers for BlitzPlus and Blitz3D. I personally never used this. So have fun with this. Regarding the download, you have to manually visit the site and press this download button.
http://files.to/get/58766/6749/blitzfreeimage.exe
http://files.to/get/58766/6749/blitzfreeimage.exe