A masterful display of game design in this genre, following in the footsteps of incredible games like Portal, the Witness, and Superliminal. At every point in the game, I felt that it had just the right amount of challenge to keep me engaged without putting me off. I had to step away for a while from the final puzzle, with the game open, to eat and think, but my real completion time is closer to 105min. Great work, team!