An Omnibus is a massive single volume that compiles multiple other pieces of work into a single book. The Infinite Adventures Omnibus collects Volumes 1 through 6 of the Infinite Adventures: Western Realm books.
Purchasing this Omnibus gives you each of the 6 individual Volumes, plus the Omnibus book, which is available as a hardcover as well, PLUS the Common Reference Booklet, a 122-page separate reference for the introductory general rules for all POIs, Events, Quirks, NPC/Creature Modifiers, and dozens of pages of Utility Tables for use in your adventures.
The Infinite Adventures Omnibus is a massive, 800+ page tome collecting the first six Infinite Adventures volumes into a single book. It describes over 150 points of interest (POI). Each one is designed to be interesting enough for at least an entire gaming session, if not an entire multi-session arc, or even an entire campaign. Every one of these POIs could be its own book :)
Each POI is designed to be immediately usable in any fantasy TTRPG, in any campaign setting, with zero to little preparation.
The entire book has been designed from the ground up to support and enable solo adventuring.
Also contains universally-usable mechanics, guidelines, tables, and general resources for all points of interest in a fantasy TTRPG campaign.
- from the publisher's blurb