I accidentally pulled an all-nighter playing this game because it was just that engaging, suffered through the next day with a smile because I got to feel smart while playing a game about googling people's names. However, I managed to push my sleep schedule back about four hours (10pm-7am, versus the old 2am-11am) because I was just so tired after playing this game all night.
TLDR; This game fixed my sleep schedule by giving me insomnia, 10/10