itch.io

Can't say for certain in this particular case, but this video shows one of the reasons many choose to not support mac and might be the reason he choose not to (also it's annoying to provide multiple builds lol)

If you don't have windows but still want to get a feel for the game. Check out my remake in scratch. https://slimey658.itch.io/speedrun-sharpening-championship-in-scratch