A story like Heroes or Lost might spread from television into comics, the web, computer or alternate reality games, toys and other commodities,
and so forth, picking up new consumers as it goes and allowing the most dedicated fans to drill deeper. The fans, in turn, may translate their interests in the franchise into concordances and wikipedia entries, fan fiction, vids, fan films, cosplay, game mods, and a range of other participatory practices that further extend the story world in new directions. Both the commercial and grassroots expansion of narrative universes contribute to a new mode of storytelling, one which is based on an encyclopedic expanse of information which gets put together differently by each individual consumer as well as processed collectively by social networks and online knowledge communities.
A transmedia story represents the integration of entertainment experiences across a range
of different media platforms.