"...the insight I had playing Indigo was that map-based games, while non-linear in gameplay, are inflexible in narrative. There’s nothing variable about the story that emerges in the player’s head: it’s authored, split up, and distributed across the game like pennies in a Christmas pudding. All that changes is the pace at which it appears. But in time-based games, everything the player does is story, and so that story is constant flux.

To put this another way:

Map-based games are ludicly non-linear but narratively inflexible.

Time-based games are ludicly linear but narratively flexible.

(Of course, these are spectrums: some games, like Rameses or Photopia are ludicly linear and narratively inflexible, and some, like Mass Effect, at least endeavour to be ludicly non-linear and narratively flexible.)
...
Do readers want to interact, toy and play with fiction, or alter, bend and shape it?" Jon Ingold is smart.

"So is it worth reading dusty IF history? Well, I haven't read it yet. But I can say that the book really represents a tour through the past ten years of the IF community's thinking. Some of the essays are from 2001; some have been revised for this edition; some are brand-new. Many have been published in other forms, so if you've been devouring our blog posts and essays for the past few years, you will see few surprises. But if your awareness of IF dates from the last century -- or if you've been following us only casually -- I think this book has something to offer."

"Curveship is an interactive fiction system that provides a world model (of characters, objects, locations, and things that happen) while also modeling the narrative discourse, so that the narration and description of the simulated world can change. Curveship can tell events out of order, using flashback and other techniques, and can tell the story from the standpoint of particular characters and their perceptions and understandings." This looks both bonkers and brilliant.

"The Queen has told you to return with her heart in a box. Snow White has made you promise to make other arrangements. Now that you're alone in the forest, it's hard to know which of the two women to trust. The Queen is certainly a witch — but her stepdaughter may be something even more horrible..." An interesting take on conversational IF, even if some of the most interesting endings - and best writing - his relatively cryptic to access...

"There are no cut scenes, no uninteractive passages, no portions where the characters are essentially "switched off" and indifferent to what the player does. Everything counts. Everything is part of the story." Excellent Emily Short piece on Blue Lacuna

"This year, I have no apologies about any of my top five. Here’s my list of the cream of the crop..." Emily Short on this year's IF competition entrants.