You are running. From what? Where to?
Digital Witnesses is set within a futuristic, post-apocalyptic world, one which regulates every step its citizens make, every role each person plays - think of your standard dystopia - think Brave New World and The Giver and The Island. You, your running: that is a spanner in the well-oiled works of the city.
The passage constraint means that, for economy, passages loop round. Chunks of backstory are revealed as you go along, and it gradually becomes clear what the stakes of this are on you. (Note the phrasing: this is dynamic fiction - not linear, because it is not told linearly, but without choices in the traditional story-altering sense either.)
The world building here is evocative, eschewing exhaustive detail for revealing it through actions and people. Perhaps the predictable setting and plot works for it - what else would a dystopian story be about other than escape? - since it allows the reader to fill in the details with their imagination, and allowing the reader to focus on the craft of the writing rather than the mechanics of the world. Certainly this was an enjoyable, short piece of dynamic fiction with the pacing of a movie.