When I downloaded the Mac version, the folder that was downloaded onto my computer is called LastOneStanding-7.2-pc. I suspect this might be the Windows version accidentally marked as the Mac download. I just downloaded the Windows version to check, and the Windows version has identical folder contents: game folder, LastOneStanding-32.exe, LastOneStanding.exe, LastOneStanding.py, LastOneStanding.sh, lib folder, renpy folder.
If it was the Mac version I think there should be a file with an icon called LastOneStanding.app.