From publisher blurb:
Welcome to Encounters, the fourth volume of the highly-anticipated Swords of Kos Fantasy Campaign Setting! This book contains 17 system-free encounter tables for general and specific areas on the island of Kos and the lands surrounding it. All of them can be used either individually or in conjunction with each another, and within the context of the Kos campaign setting or as part of any other milieu. It follows [rpgitem151831 Kos City] and Lands Beyond Kos and is fully compatible with and expands upon concepts that appear in them.
The Swords of Kos Fantasy Campaign Setting has deliberately been designed to be system free, not tied to any particular game setting, and to be compatible with any set of role-playing game rules suitable for ancient, medieval, or fantasy venues. In that the setting was used as the playtest backdrop for games using the OGL/d20, Pathfinder, “Basic” Dungeons & Dragons and Labyrinth Lord retroclone, and Advanced Dungeons & Dragons rules, of course, it is an especially ideal setting for them.