Here is a collection of interviews, resources, and reviews from
those lucky enough to play early releases of the game:
Kotaku, September 2010
The pace of the game seems to be that of a gradual dawning.
You stroll in first-person view. You look at beautiful or
intriguing things – a windmill in the distance, a figure that look
like a man or a statue of one – and you approach. There appears, in
so many places, puzzling things. You ponder them. You try to solve
Joystiq, August 2011
As I explored, the concept of "just line puzzles" expanded
enormously. While blue panels with line puzzles are as deep as the
puzzles go, the ways in which you solve said puzzles changes
dramatically from area to area.