If you loved the detailed depiction of medieval German village life in Eifelheim and how the alien Krenken were integrated into that historical context, you'll be captivated by A Canticle for Leibowitz. Miller's novel weaves together centuries of post-apocalyptic history, rich religious traditions, and the painstaking preservation of knowledge by monks, creating a world as immersive and meticulously realized as Flynn's.

If you found the cultural exchanges and misunderstandings between the villagers of Oberhochwald and the Krenken compelling in Eifelheim, you'll be gripped by The Sparrow. Russell's novel follows a Jesuit mission to an alien world, delving into language, faith, and the tragic consequences of cross-cultural contact—much like the poignant, thoughtful interactions in Flynn's story.

If you enjoyed the rigorous scientific logic and philosophical debates between Dietrich and the alien scientists in Eifelheim, Anathem will be a treat. Stephenson crafts a monastery of scholars debating cosmology and physics, while an extraterrestrial contact event forces them to confront deep questions about existence, much like the blend of science and faith in Flynn's novel.

If you were fascinated by the medieval setting, the interplay of faith and reason, and the investigation of mysteries in Eifelheim, you'll be enthralled by The Name of the Rose. Eco's novel follows Brother William of Baskerville as he unravels a series of murders in a monastery, blending history, philosophy, and religious conflict with meticulous detail.

If the dual timelines of Eifelheim—the present-day scholars and the 14th-century villagers—kept you hooked, Hyperion will offer an even grander narrative puzzle. Simmons weaves together the stories of seven pilgrims, each with their own history and mysteries, creating a tapestry of interconnected narratives that echo the layered storytelling of Flynn's novel.