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The Threshold Engine
A Free d20 Roll-Under RPG System
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Threshold Core
Introduction
Player or GM
Playing in Good Faith
Core Rules
The Conversation
The Core Mechanic
Thresholds
Special Rolls
Specific Rules
Recovery
Other Hazards
Characters
Knacks
Attribute Knacks
Combat Knacks
General Knacks
Heritage Knacks
Leadership Knacks
Magical Knacks
Skill Knacks
Social Knacks
Weird Knacks
Heritages
Skills
Combat
Melee Combat
Ranged Combat
Damage and Conditions
Social Conflict
Equipment
Subsystems
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Subsystems
The subsystems of the game are determined by the genre and setting.
