It's a cute Yume Nikki fangame. It may get very good... Although, whether this is a Fangame or not, it is celarly inspired by it (It even has one of the YN tracks...) so why is it not mentioned in the description of the game or something?

Until update 0.4 I used some free music that is available for everyone to use (I am pretty sure that Yume Nikki didn't use those music though) but now the majority of the soundtrack is created by myself.
There are people that don't know YN, so writing in the main page that it is inspired by it may not mean a lot to those people.