What are some differences between the story "The Most Dangerous Game" and the movie version?

I watched the 1932 movie version of the story a while ago and would not want to watch it again. It looked like what they used to call a B movie. In the old days theaters offered double features, plus cartoons and newsreels. The B movies were made on much lower budgets than the feature movies, but the B movies had some influence on world cinema. Both Francois Truffaut and Jean-Luc Godard were fans of American B movies. The so-called "noir" films were inspired by American B movies, which were often murder mysteries and used lots of shadows and dim lighting to create effects of suspense and danger. I can't remember the film version of The Most Dangerous Game very well, but it seems to me that the biggest difference between the story and the film was that Rainsford and Zaroff had a tremendous battle at the end of the film, whereas the original story ends cryptically and without violence. I don't believe the filmmakers could afford to travel on location to any island but had to fake all the island scenery indoors at the studio.