Not the game, which I played, but the movie.
The Lost Man gets off a train and tries to get out from the Japanese train station... only he keeps encountering the same corridor. However this is a metaphor for how confused he is over hearing his girlfriend/wife is pregnant. There is a Walking Man, a School Girl, and a Boy... and while there are a lot of anomalies, the Boy ends up being a bit of a cheat code.
Did this need to be a movie? Probably not. The game was decent enough, I played it, had to get some help for some of the subtler anomalies... but as a narrative experience? This movie played the corridor as basically a form of purgatory where people get trapped (see the man and his pregnancy consideration), and so they have to go through the corridor many times.
Most of the anomalies are from the game, and if you know the game, you can definitely spot them, although the movie choses not very subtle ones, and the people hit a lot more anomalies than in the game. Although the movie does give a good demonstration about how paranoid people get about taking note of every possible thing.
There is some camera trickery to get around the repeating set, but I think they did two full corridors and worked around that. The Walking Man looks a damn lot like his game self. The main protagonist is fine, but his arc is kind of basic.
This is fine, nothing amazing. It cashes in on the game popularity well, but will they do the train game next? We'll see.
