Basic Roleplaying SRD

Basic Roleplaying Systems Reference Document and Open Game License

The Basic Roleplaying SRD is based on Basic Roleplaying, the simple, fast, and elegant skill-based percentile system that is the core of most Chaosium roleplaying games, including Call of Cthulhu, RuneQuest, SuperWorld, and others. 

Under the provisions of the Basic Roleplaying Open Game License (BOGL), designers can create their own original creations, settings, games, and unique ideas using the Basic Roleplaying rules engine, royalty-free and without further permission from Chaosium Inc.  

For further details, see the BRP Website, the online resource dedicated to Basic Roleplaying. It includes an online version of the BRP System Reference Document, along with other useful information and resources for playing and creating games with the Basic Roleplaying system, including FAQ.

Please note: the BRP Open Game License for use of the Basic Roleplaying system differs from the Wizards Open Game License and has different terms and conditions.