This famous DLC is typically a paid standalone title or part of the main game's "Remastered" or "Part I" editions. Literature and Comics
There are two primary games with similar titles that offer free or paid downloads: Those Left Behind Free Download
If you are looking for written works, free and legal digital copies are available through digital libraries: Those Left Behind on Steam This famous DLC is typically a paid standalone
The availability of a "free download" for each depends on the specific title and the platform. Video Games Those Left Behind Free Download