I saw Markiplier play it and immediately rushed to Steam to have a go myself. Even though it does end up consuming a lot of your time, i do think that the game itself is quite interesting, from the plot to the characters themselves.
The thing i love most about the game is by far the character designs. The art style is just so gorgeous! It's clear that the artwork for this game must have taken a good amount of time, and it shows!
Overall, i'd say this is a good game for those who have time to spare and who don't really mind putting money into games, even though its entirely optional. Though towards the end it gets a bit tedious, the story line itself is enough to want to play the game :D