DLC theory (or Downloadable Content) is a form of digital media that is added to a game or program after its initial release. It generally adds new content, such as levels, characters, weapons, items, and more. It is usually released for free, but sometimes comes with a cost. DLC theory is a popular way to extend the life of a game or program and keep players engaged with the content. It can also be used to introduce new features or content that wasn’t available at the time of the initial release.