Galatea is an early and influential experiment in NPC interaction by Emily Short with approximately two hundred billion endings[1]. Here is one, which has evocative and meta things to say about meaning in the context of an evocative, meta piece.

"The effect stays with you for days, for weeks. Things catch your eye. Windows watch you, doors fly open of their own accord, trash arranges itself into inscrutable sigils. Winds trouble you. Trees stretch and touch your shoulder as you pass, but when you turn your head, they have nothing to say. And night by night you wake, tangled, with the moon on your face."

[1] oh I don't know, like sixty or something

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'Anything Nice' is is a series of very short posts highlighting things I liked about the treatment of narrative in other people's games. It's a deliberately magpie, grab-bag approach. Some of these games I adore, some I don't even like, but I learnt from all of them.