Cleared the true end a few hours ago. Definitely worth playing.
I don't think I've ever had a game make me think so much. All these different world lines and time leaps... My mind kept wandering, looking for plot holes at every opportunity. My brain hurts so I can finally give that a rest xD
I'm sort of worried about the anime remake. I think it's going to take a godly director and lots of episodes to pull this off properly... Maybe I'm being too pessimistic :P