Very interesting game. From the makers of Ever17, one of the most popular visual novels internationally, you can expect this one to be on the same par, and it is. I personally have never finished E17 (shame on me, yes I know), so I can't really compare the two, but let's just say that Remember11 will keep you thinking and wondering, and some of the concepts in there are just amazing.
The official summary is a bit confusing, but the story basically goes like this. A man falls off a tower. A girl gets wrapped up in a plane crash. The man wakes up to find himself in a snowshed, isolated from the outside world with only 3 other people as company. The girl wakes up to find herself in a mental institution with 3 others, where everyone thinks she lost her memory. The catch? The man wakes up in the girl's body and the girl wakes up in the guy's. The two then have to face the dangers in each other's lives with minimal communication, relying solely on trust as they fight against the powers of nature on one side, and the hostile intentions of someone in the institution on another.
The dialogue is very well-written, and since the story goes back and forth, your actions on one side of the story will affect what happens in your next playthrough, as the other side of the story. When you first play the game, you automatically start off on the girl's side, but after that you can choose. When I say that your actions affect the story, what I mean is that, say, you say one thing as a girl that will get communicated to the guy. The guy will hear that when you play through his story next. However, if you had said something else as a girl, the guy will hear that instead. This may not seem impressive with this example, but imagine all the possible consequences, especially where endings are concerned...
The music is absolutely wonderful, as well as the art and the voice acting. Like in E17, the game gives you a gallery and a jukebox after you finish the game once, as well as shortcuts to certain intervals in the game. This is extremely useful and it's something that I wish all visual novels had.
With a point-and-click adventure (and on the PSP, there isn't even the pointing), it's hard to imagine that controls would be a big factor, but good ones really make a difference with this game. My favorite is the fast-forward option, as well as automatic skip (which will move until you get to a new dialogue you've never seen before). Especially handy for trying to work towards 100% completion =D
I suggest this game for anyone who's played E17 and liked it, anyone who likes visual novels in general, and anyone who HASN'T played visual novels but is looking for something to get into.
There are only two real words of warning. One is that there is little-to-no romance in this game (this is important to some, I think), and two is that ... well, this game is only available in Japanese, unfortunately, and since it's a visual novel, you're required to have at least an average-level of understanding to play this game.
Japonya 
