My prologues, I admit, are sometimes used to draw a reader in if the first chapter doesn't open with a bang.
1. Does that work?
2. If so, why isn't it just Chapter One?
I'm with Gilloughly. I've seen very few "prologues" that are truly necessary, and among those, even fewer that couldn't simply be Chapter One. I think most "prologues" are little more than gimmicky affectations on the part of the writer, most jettisonable.
And Fantasy writers, who populate this forum the way moose populate my garden, are, by far, the most prone to prologuitis. I don't know why, exactly, but I suspect that many feel their fantasy world needs initial explanation to be understood, which strikes me as a symptom that they may not understand it themselves.
I read Fantasy, and really like good ones. It drives me up the wall when a writer explains the Fantasy World up front, before ever getting into the actual story. As a reader, I want to
experience that world, not read a travelogue about it. Start by telling a damn story. I can get the "world" stuff as I go along. The moment I see the first word in a Fantasy novel is
Prologue, I generally to the Mystery section in the bookstore.
caw