from the introduction:
This document, the first official supplement for Zip!, presents rules for adventuring in the titular fantasy world of Hawkmoor. This work doesn’t stand on its own – you will need a copy of the free Zip! core rules document to make use of this supplement.
Hawkmoor adds races and classes such as elves, dwarves, halflings, clerics and sorcerors, adapting these RPG tropes to the lightweight Zip! rules. Guidelines are provided for magic and combat in a fantasy setting, some of the monsters and magical treasures of Hawkmoor are detailed as well.