Film director Steven Soderbergh says he faced a lot of challenges in making Mosaic, including what to call it. In January, HBO will air Mosaic as a six-episode series over five nights. But starting today, you can download a standalone app for iOS and tvOS, and take in its roughly 7.5 hours in interactive form, shifting your perspective among the story’s main characters in a branching narrative. Mosaic most resembles the sort of show you might binge-watch on Netflix — all of its episodes will be available at once — and yet it allows for a level of interaction only possible inside a custom app.
“It’s not a TV show, and it’s not a movie,” Soderbergh told me and two other reporters on Tuesday afternoon in San Francisco. “It’s something...
