How crucial is setting to the short story, "The Most Dangerous Game"?
Setting is not important at all; this story could have taken place anywhere.
Setting is somewhat important, but it could have just as easily taken place in a small, country town.
Setting is extremely important, as the fact that they are on a remote island is what advances the plot and makes it so difficult for Rainsford to escape General Zaroff.
This story would have been more believable had it taken place in a large urban setting.