their angelical understanding

Porpentine reverses the archetypical character of angel in an evil one, and mixes it with creepy details (Spoiler - click to show)(the face in the bottle, the hands on the cottage) to distill anguish in player's mind.

Once this done, she unveils in a dream sequence the true meaning of the game (Spoiler - click to show)(a metaphor for a child abuse) and keeps then the emotion growing until the amazing end (Spoiler - click to show)(a bloody tile duel).

Add some brilliant uses of Twine devices, as words collapsing, and you get, indeed, another masterpiece from Porpentine.