We're All Going to the World's Fair (2021)

Alone in her attic bedroom, teenager Casey becomes immersed in an online role-playing horror game, wherein she begins to document the changes that may or may not be happening to her. (imdb)
Cast and Information
Directed By: Jane Schoenbrun
Written By: Jane Schoenbrun
Starring: Michael J Rogers, Anna Cobb
Genres: Drama, Suspense/Thriller, Horror
Country: USA