@GlitchGhost@retro-gaiden.com with Linux Mint you should be able to install it just by downloading to ~/.local/share/icons (command is in the readme file) and then choose that theme in settings. no guarantees it'll cover all of Linux Mint's programs yet! if you try it, let me know what's missing and I can update it right now for updates you'll have to re-download it (either delete the folder and download it again, or open the folder and git pull) since i don't have anything properly organised yet. keep in mind the warning that says this is a work in progress! as for uploading it to theme stores like pling - it's still got a ways to go before it's ready to package up, so "not yet"? but probably eventually