Basic Roleplaying
Universal Game EngineThe universal d100 system behind Call of Cthulhu and RuneQuest
View on DriveThruRPG →This page contains affiliate links. If you purchase through them, we may earn a small commission at no extra cost to you.
Languages: English
Diced100
System FamilyBRP
Cost$$
LicenseORC
PublisherChaosium Inc.
Year2023
Complexity
Medium
Accessibility
Medium
Community
Medium
Core Mechanic
Roll d100 under your skill percentage to succeed. Critical success on 1/20th of skill value, fumble on 99–100. Opposed rolls compare results. Optional rules layer on complexity as desired.
Best For
GMs who want a modular, genre-agnostic percentile system they can tailor to any setting with optional rules for powers, combat, and more.
Highlights
Highly modular — add or remove subsystems at will, intuitive percentile mechanic, unified system across any genre, skill-based progression through use, long design heritage
Considerations
Can feel generic without a specific setting, requires GM effort to select which optional rules to use, combat can be deadly and swingy