What is the single best science fiction novel of all time?

[Parmandur]

Nope. Still not seeing it. There’s not a single sf novel
In the top ten. Pair of Harry Potter books and the Hobbit.

Here, you have to scroll a bit to get to them: List of best-selling books - Wikipedia

 

[Hussar]

Here, you have to scroll a bit to get to them: List of best-selling books - Wikipedia

AHh, I see what you were doing. I searched for best selling SF books. That's why my list is very different from yours.

 

[Parmandur]

AHh, I see what you were doing. I searched for best selling SF books. That's why my list is very different from yours.

A lot of those click bait lists consolidate series, it seems, which gives a different picture. A 40 book series where each entry sold a few hundred thousand copies consistently (Ringworld, Foundation) is great business, but a very different beast from Dune or 1984 selling more with one book.

 

[GreyLord]

Well, the answer I'm going to give will be hated by MANY here. Many will dislike it simply due to it's association with the author.

However, it is probably my favorite SF book of all time, and perhaps one of my favorite novels of all time. It is also immensely thick.

Battlefield Earth.