Definitely the best Undertale fangame by a large margin. The music and writing is generally incredibly faithful to the original game. However, not all the characters are created equal (sorry Dalv), and the story takes a weird turn to almost entirely focusing on Ceroba after she is introduced in the pacifist route. The bosses are also somewhat unbalanced, though Yellow is not nearly as bad in this regard as many overly difficult Undertale fan projects. Very much worth playing if you enjoyed Undertale.