If you loved the way The End of Mr. Y blurs the boundaries between reality and fiction—especially through Ariel Manto’s forays into the mysterious Troposphere—you’ll be captivated by House of Leaves. Here, the story unravels through a labyrinthine manuscript about a house that’s larger on the inside than the outside, annotated by an increasingly unreliable narrator. The book’s structure itself becomes a puzzle, mirroring the philosophical and existential questions at its core.

If you enjoyed following Ariel’s journey through mind-bending scientific and philosophical concepts in The End of Mr. Y, you’ll be drawn into The Raw Shark Texts. Eric Sanderson wakes with no memory and slowly uncovers a world where conceptual creatures—like the mysterious Ludovician—hunt thoughts. The novel explores themes of identity, memory, and the nature of reality in a way that’s both intellectually satisfying and emotionally resonant.

If Ariel Manto’s morally ambiguous decisions and her willingness to risk everything for knowledge drew you in, The Secret History offers a similarly captivating protagonist. Richard Papen and his elite group of classics students at a small college embark on a dark intellectual adventure that blurs the lines between right and wrong. The novel’s intense focus on moral complexity and consequences will keep you rapt.

If the metafictional playfulness and the book-within-a-book conceit of The End of Mr. Y excited you, you’ll delight in If on a winter's night a traveler. Calvino’s novel addresses you, the reader, directly, weaving a series of interrupted stories that explore the act of reading itself. It’s a celebration of the infinite possibilities of narrative, perfect for those who loved the mind games and literary puzzles of Scarlett Thomas’s work.

If the way The End of Mr. Y weaves science, metafiction, and questions of fate into its plot intrigued you, Slaughterhouse-Five delivers a similarly surreal and thought-provoking experience. Billy Pilgrim’s time-slip narrative, encounters with aliens, and reflections on free will and trauma provide a blend of speculative storytelling and philosophical depth that will resonate with your tastes.