Book like Franbow(game)?

Hi people,
I was curious if there is a book like the game “Franbow”?

(Fran Bow is a creepy horror adventure game that tells the story of Fran, a young girl struggling with a mental disorder and an unfair destiny. She has to swallow pills and these pills warp her reality and at some point the player cannot tell if it’s the real or the warped reality)

I looked for quite a while for a book like this, but I’ve never been able to find one, you all are my last chance :’)

by tp_mfs