The way that the word SENSEN is so omnipresent, instead of maybe the name of the game, in load screens and menus as well as in the actual game, really adds to the sense of being there. The use of that word (SENSEN plays a huge part in the story as a whole and is connected to the overall struggle and the protagonist's inner conflict), pretty much throws me into the story as soon as I start up the game. This is just a fantastic way to go about it – let the whole product tell the story.
The memory remix is a very interesting gameplay concept. How developers marry gameplay and story tend to stagnate pretty badly and it was nice to see a different approach to it. Since they were already playing with memory thematically it also fit really well into the story. It's some of the most interesting story gameplay I've seen and I would love to explore that further.