Man, I didn't even NOTICE that the clock was changing on the main screen.
But this was a fascinating experience, influenced by previous works but not quite like anything I have ever played or watched. It played with perspective, with choice, with both the meta-knowledge of the player and the knowledge the characters have. No one knows what they think they know in the way they think they know it at any point, including you. And I don't mean "you."
Most of all, this game plays with the idea of "endings," perhaps with more creativity than I've ever seen before. It reminds me a little of "No-One Has to Die," but whereas that game touches on the idea, this game takes it and sails off into the stratosphere.