Source Systems

Credits and references for all games and books that make The Western Horizon possible. Please purchase the originals — WH is a framework for combining these systems, not a replacement for them.

Worldbuilding Systems

System	Author	Used For
Microscope	Ben Robbins	History, Palette, Big Picture
Microscope Explorer	Ben Robbins	Chronicle (single-location history)
Kingdom	Ben Robbins	Community drama, Crossroads
Ex Novo	Shawn Tomkin	Settlement creation, factions
Ex Umbra	Shawn Tomkin	Dungeon creation from rumors
Beak, Feather & Bone	Tyler Crumrine	Building-scale locations, factions
Perilous Wilds	Jason Lutes	Wilderness, dangers, discoveries
Delve & Rise	Anna Blackwell	Solo dungeon/stronghold mapping
Hexmancer	Traverse Fantasy	Procedural hex terrain
Street Magic	Caro Asercion	Neighborhood/NPC relationships
Claw Atlas	Tyler Crumrine	Hunters variant, threat generation

Play Structure & Philosophy

Source	Author	Used For
Proactive Roleplaying	Jonah & Tristan Fishel	Goal-driven play, faction clocks, encounter design
Blades in the Dark	John Harper	Clock mechanics for faction tracking
West Marches	Ben Robbins (originator)	Open table structure, player-driven exploration