In the current media landscape, the boundary between a primary work of entertainment and its supplemental material has almost entirely dissolved. "Extra" content—once relegated to DVD bonus features or niche fan forums—has become a cornerstone of modern franchise building and audience engagement. The Rise of Transmedia Storytelling

: Integrates films, TV series, comics, and digital content into one cohesive ecosystem.

Modern studios and creators use various formats to keep audiences engaged between major releases: Beavis and Butt-Head

Beavis and Butt-Head is a duo with about as much entertainment value. Beavis and Butt-Head

: Uses animated shorts ( The Animatrix ), video games, and comics to provide essential context that cannot be found in the films alone.