I love the visual style, but the slow walking speed and fairly large map make playing it even once tedious, which is bad for a game that's meant to be played multiple times. The same can be said of Yume Nikki and spinoff games, though; the problem that killed the experience for me is the low FOV, which looks good in screenshots, but is disorienting and distracting to play in.

TL;DR bridge walking simulator. The moon indicates what can happen in any given instance of the game; this is never much.