[Apocryphon]

I, Robot is significantly harder to adapt than Foundation. The former is like a book of little logic mysteries. The film turned the setting concept into one big murder mystery to appeal to modern audiences. It was a drastic tonal change, but preserves some of the concepts of Asimov, even including the Zeroth Law at the end.

[Jtsummers]

The movie was an already written script paired with the title and some characters renamed. It was not made (the script) with the intention of adapting the book (which is a series of short stories with a common framing story). I, Robot, like World War Z, needs an anthology or serial format to be properly presented as a show or film.