Good, complex scifi, but definitely not for beginners!
Complex layering, or complex worlds, or complex stories, or complex moral dilemmas and so on... but captivating for the seasoned scifi-er!
#1 of 2 in Teixcalaan
#3 of 3 in The Book of the Long Sun
#1 of 5 in Confluence
#1 of 10 in Culture
#1 of 2 in Dogs of War
#4 of 3 in The Book of the Long Sun
#3 of 4 in Helliconia
#1 of 4 in Hyperion Cantos
#2 of 3 in The Book of the Short Sun
#1 of 2 in St. Leibowitz
#1-2 of 3 in The Book of the Long Sun
#1 of 3 in Probability Trilogy
#4 of 18 in Hainish Cycle
#1 of 5 in The Machineries of Empire
#1 of 8 in New Crobuzon
#1 of 3 in Prefect Dreyfus Emergency
#0.5 of 1 in The Windup Universe
#1 of 3 in Nanotech
#1 of 6 in The Quiet War
#1 of 5 in Revelation Space
#1 of 1 in Stranger in a Strange Land
#1 of 3 in The Broken Earth
#4 of 18 in Hainish Cycle
#2 of 10 in Culture
#1 of 5 in The Book of the New Sun
#1 of 6 in Remembrance of Earth's Past
#1 of 1 in The Windup Universe
#1 of 3 in Spin
#3 of 3 in Максим Каммерер