Be wary of sites offering "free full version" downloads of commercial PC games, as these often contain malware. Always use official storefronts or verified community platforms.
If you are looking for digital game downloads or RPG supplements, here is what is currently available: D&D "Unearthed Arcana" (Free Playtest Content) the-unearthened-free-download-pc-game-full-version
If "The Unearthed" refers to a specific indie or older title, you might be thinking of: Be wary of sites offering "free full version"