Hiya, I guess I should start off by saying that I'm quite enjoying the game! I'm only about an hour into it and I don't know how much more I have left but I'm looking forward to playing the rest. So everything that I have to say here is based purely upon the first hour or so of game play.
The visuals and sounds of the game are both quite nice, I've always been a fan of RPGMaker games. The story here is mysterious, it's presented to you over a period of time, nothing is really thrust upon you quickly. You begin learning bits and pieces of the characters that you are trapped with and the present situation, the characters all vary and are interesting enough to care about.
In my first hour or so I've yet to run into any puzzles, most of the game so far has been story and exposition, talking with the characters to keep the plot moving.
I do like the incorporation of the mouse for point and shooting, it's a nice touch.
I do plan on playing more of this game when I get the chance, I've found it to be quite interesting so far. If you don't mind, I started a let's play series of the game over on my channel.
Cheers and best wishes to you.