Do you think Zaroff plays fair? How would you change the rules to make things more fair?

In Zaroff's opinion, yes, he does give his prey a fair chance to survive.  Zaroff will make sure that his human prey are in top physical condition before beginning his hunt.  That seems fair.  At least he gives them a chance to actually be physically capable of running.  I also assume that he gives the prey at least a knife, because that is what he gave Rainsford.

teenagers are certainly stereotyped as moody.

most people view teenagers as naturally moody and grumpy, even when this is wrong. many teens are suffering from depression but it is brushed off as "just a phase" or "that's just cause they're a teenager"

rudy is the nazi ideal, unfortunately for the nazis his ideal comes in the form of jesse the complete opposite of those who embrace the idea of white supremacy. over the course of the novel, rudy learns that he wants nothing to do with the hitler youth, and because of this his parents are forced to make a bargain; rudy's father is forced into the military, so that his son can remain home.   both liesel and hans influence that young man that rudy becomes. following han's example, rudy puts aside his own hunger to risk his life so that the jewish prisoners might have bread to eat.