If you enjoyed Roger Torraway’s transformation and relentless mission to survive and adapt on Mars in Man Plus, you’ll love following William Mandella’s grueling odyssey through interstellar war. Both novels keep the action and tension high, with protagonists forced to adapt in extreme ways to achieve their goals, all while society and humanity shift around them.

Much like the chillingly plausible cyborg transformation and technical detail in Man Plus, The Gods Themselves immerses you in a world where scientific breakthroughs have world-altering consequences. Asimov’s depiction of alternate universes and energy exchange is rooted in real physics, providing the same blend of hard science and human drama you loved.

If Roger’s ethically murky choices and the moral grayness of the Mars project compelled you in Man Plus, you’ll be riveted by Ben Reich’s ruthless pursuit in The Demolished Man. Both novels feature protagonists who aren’t always sympathetic, forced into difficult ethical territory by the pressures of their worlds.

If you found yourself pondering the nature of humanity and the cost of survival through Roger’s ordeal in Man Plus, The Dispossessed will captivate you with its profound questions about freedom, identity, and social structure. Shevek’s internal struggles and the societal commentary offer the same thoughtful depth and reflection.

If you were fascinated by Roger’s psychological unraveling and his struggle to retain his sense of self amid radical transformation in Man Plus, Solaris will draw you in with its haunting portrayal of Kris Kelvin’s inner conflict as he faces the unknowable alien intelligence on the planet Solaris. Both books combine science fiction with intense psychological exploration.