The project began development at Fox 2000 Pictures in December 2017, with Berger and Aptaker announced as screenwriters and Marks set to direct it in January 2019.

When a sixteen-year-old struggling with obsessive–compulsive disorder reconnects with her childhood crush, she confronts the possibility of finding love and happiness in the face of mental illness.

Turtles All the Way Down was optioned by Fox 2000 Pictures upon the publication of the novel in 2017,[2] with John Green and Rosianna Halse Rojas as executive producers.

[14] Metacritic, which uses a weighted average, assigned the film a score of 64 out of 100, based on 9 critics, indicating "generally favorable" reviews.

[15] Adrian Horton of The Guardian awarded the movie three stars out of five and wrote that it "struggles to find a balance between relatable teenage angst and heightened vessel for emotions that feel bigger than life", but complimented the depiction of thought spirals from obsessive compulsive disorder and Merced's performance.