We're going to explore a lot, spatially and character-wise, but there won't be a lot of choices I'm afraid. At least not ones that have any significant impact.
I plan on giving Reamus more options in how he reacts to events, to add a bit of flavor.
But I'm also cautious. I don't want to give players the impression that they have more control over the story than they really have.
For the most part, Pervader is like an illustrated book.