From the first issue:
Most of Amberzine will be "campaign fiction." That refers to a huge body of notes, personal logs, and epic poems produced by players and Game Masters. However, this material must be based on real, on-going Amber role-playing. We're not interested in totally fictional Amber stories, but only in those things that are based on the use of the role-playing system.
Or, do you have some ideas about experimental, radical, or just plain new role-playing? Amberzine is the place to present 'em.
Amberzine is a place to discuss Zelazny's work in depth... particularly... pieces analyzing the philosophical and cosmological make-up of the Amber universe.