Quote The ArchLinux package (in AUR) for the application was unusable for certain users depending on their ruby setup. All scripts have been rewritten to get rid of ruby, solving the problem once and for all.

Article taken from GamingOnLinux.com.

Oh my word I do love itch.io and their store app. It's open source (MIT license), it's beautiful and it actually works really well now.Linux specific fixes:It has a professional Japanese translation, the ability to pick a download if a game offers multiple options, a better preferences screen, and bug fixes.Seriously guys, you should all keep a keener eye on itch.io , they are doing amazing stuff.