What is escape literature?
Escape literature is closely related to the genre of romance, where there are many archetypal characters who are easily distinguishable as good or evil.
"The Most Dangerous Game" is a classic example of escape literature in that there is a clear distinction between good (Rainsford) and evil (Zaroff). There is little character development, as it relies heavily on archetypal characters (the evil mastermind) and setting (a remote island).
"The Most Dangerous Game" is escapist literature since it is mainly plot-driven, formulaic, and thin on metaphorical language. Most high school freshman literature books begin with this story because it is high interest and easy to analyze in terms of story elements and a plot diagram. Though a great story, it is essentially a warm-up to more sophisticated texts.
Interpretive literature certainly has more character insight, as told by a narrator or through third person omniscient point of view. "The Most Dangerous Game" uses third person limited. Even though there are some irony and themes addressed, Connell presents Rainsford as an archetypal "action hero."
What separates the two types of literature is use of metaphor, and the story is thin on symbolism and figurative language. "The Most Dangerous Game" also cannot be read on many levels of literary criticism (feminist, Marxist, etc...) other than archetypal.
Escape literature is written for entertainment and/or monetary purposes, or for less literary audiences (films, young adult literature, serials, etc...).