I see the top link (labelled as supporting Windows/Mac/Linux) goes to your website where you can download the game. You also supply a Windows link to download that version directly. Please link directly to the Mac and Linux versions too. Otherwise the game can't be installed through the Itch.io app on these platforms. Thanks!
Hi there. We just added Linux as direct download. Concerning MAC: Since we dont have an apple-signed dmg-file it would probably only show that the file cant open, because it is unsigned. The current indirect link (https://www.fromdarkness.net/download/mac.php) provides a workaround explanation. Since we are not able to attach that explanation here, I prefer keeping an indirect link (see above). Let us know if you have any more questions!