itch.io

go into the app's contents (right/control click, Show Package Contents, Contents, MacOS), a file with the same name will come up. Open terminal, and type in chmod +x (with a space after the x) then drag & drop that file and press enter then load the application again.

or just an online extractor

correct

you will still need steam running in the background tho

its on steam for windows

no it isn't lol