I tried the first one. As for the second one I may not know exactly what you're talking about. I should add that I got it with the Racial equality Bundle. So I don't know, I'll try to run the Windows one to play it but that's a pity :/
Itch has a downloadable desktop app which you can find here: https://itch.io/app
When people have trouble downloading the game, downloading it through the app instead of from the website can sometimes fix the issue. :)