I've played it and gotten all 6 endings! (Although I only got the true ending with a guide)
So satisfying! And although there is absolutely no action or time limits to deal with, the game is so atmospheric and moody at times. I first heard about it through neogaf when it was announced to be coming out last year. When it arrived, I happen to see it in Game Stop and promptly scooped it up. All I knew at the time was that it was a dialog heavy adventure game in the vein of Another Code R and Hotel Dusk only with a suspenseful twist.
The first thing that surprised me happened before I even turned the game on, I noticed it was rated M. I have never owned or even thought rated M games could exist on the DS (outside of like Dementium maybe), let alone one in a text heavy non-action game.
Well, as soon as I started it up, I got into it like a good brooding suspense novel and couldn't put it down till I reached my first ending! Say what you will about the story, the presentation of it was great. I was at first a little put off that I would have to play the whole thing again to experience more of the story and see subsequent endings. But once you find out that you can just skip every text scene you've done before (it doesn't allow you to skip a scene you've never experienced which was also great) and that the dialog choices you've made in the past were grayed/dimmed compared to the ones you didn't take made the experience that much more convenient.
For those who do play this game, I highly suggest:
1) Play the game multiple times to get all the endings. It is well worth it, easy, and really pays off once you see the true ending.
2) Because you ARE going to play it through multiple times, I suggest writing down the answers to the puzzles. There are not that many in the great scheme of things and you will thank yourself for doing it.
3) The first play through is going to be your longest, so take your time and enjoy the story. My own subsequent plays took me anywhere from 1-2 hours each (the true ending play through being slightly longer but not as long as the original)
4) Finally, it's impossible to get the true ending the first time around. As a matter of fact, it is a requirement to get at least a couple of the endings first before you are allowed to truly finish the game but it makes sense in the fiction. Don't try to game it your first time through, just play and enjoy it like a good suspense paperback.
I grew up devouring choose your own adventure books as a kid, so this game took me by surprise and knocked my socks off. It was the perfect length and playing it multiple times didn't take forever and actually got me even more invested in the story. Why they haven't released more games like this on the DS is beyond me and the "mature" themes added to this type of genre really pulled me in.
This game is an instant classic in the genre. For fans of games like Hotel Dusk and Phoenix Wright, it's a must buy. For those uninitiated to games of this type I recommend it highly, especially given the edginess of it throughout will keep people glued to the game at least through their first play through.