This is PGA’s wording for providing the credit:

A transmedia narrative project or franchise must consist of three (or more) narrative storylines existing within the same fictional universe on any of the following platforms: film, television, short film, broadband, publishing, comics, animation, mobile, special venues, dvd/blu-ray/cd-rom, narrative commercial and marketing rollouts, and other technologies that may or may not currently exist. These narrative extensions are not the same as repurposing material from one platform to be cut or repurposed to different platforms.

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