
Written in 1936, two years before Capek's death and three years before the Nazi invasion of Czechoslovakia, War with the Newts is considered by many to be Capek's greatest book. Working in the "fantastic" satiric tradition of Wells, Orwell, and Vonnegut, Capek chronicles the discovery of a colony of highly intelligent giant salamanders off the coast of an Indonesian island. Capek sardonically details all the reactions of the civilized world - from horror to scepticism, from intellectual fascination to mercantile opportunism - and the ultimate destruction from which it (and the newts) might not escape.
(TL;DR: we won't.)
A nitpick about the third recommandation with "robots modeled on Karel Čapek’s designs". I suppose that they have not read Čapek’s novels. His robots were not pure machines, they were made from a biological substrate. In a way, they were closer to golems than to what we're now calling robots.
If you want to read really different and lesser known novels, Karel Čapek’s are a good choice. I did not enjoy "R.O.R." much except for his surprising concept of robots, but I highly recommend "War with the newts".
Also, while it's really talking about stuff going on at its own time, War with the Newts is pretty good: https://en.wikipedia.org/wiki/War_with_the_Newts
