If you were drawn to the existential dilemmas faced by Paul and Spofforth in Mockingbird, you'll find Never Let Me Go equally compelling. Ishiguro's novel immerses you in the lives of students at Hailsham, whose gradual awareness of their fate leads to profound reflections on purpose, love, and mortality. The book’s quiet, contemplative style delves deep into what it means to be human when society has predetermined your role.

If you appreciated the layers of meaning and symbolism woven through the world of Mockingbird, you’ll be fascinated by Shadow of the Torturer. Wolfe’s narrative follows Severian, an apprentice in a decaying future, grappling with memory, identity, and the nature of reality. Every detail and event is loaded with allegorical significance, inviting you to unravel its mysteries as you read.

If the oppressive, technology-dominated world of Mockingbird resonated with you, Fahrenheit 451 is a must-read. Bradbury's classic follows Montag, a fireman tasked with burning books, as he awakens to the emptiness of his society. Like Mockingbird, the novel critiques conformity, the loss of literacy, and the dangers of a world where human connection is slipping away.

If you were captivated by Paul’s internal battles and Spofforth’s existential crisis in Mockingbird, you’ll find Do Androids Dream of Electric Sheep? equally absorbing. Dick’s protagonist, Rick Deckard, must confront the boundaries between human and machine, questioning his own empathy and desires. The novel explores the inner workings of its characters with nuance and intensity.

If you loved how Mockingbird focused less on the mechanics of its future tech and more on the social fabric and relationships, The Left Hand of Darkness will speak to you. Le Guin’s story follows Genly Ai, an envoy to a planet with radically different norms, as he navigates complex politics and forms a deep bond with the native Estravan. The book’s heart lies in its exploration of empathy, gender, and society.