Tips, advice, and commentary helping game masters develop and run campaigns for tabletop roleplaying games.
Dr. Game's Gaming Site
How-to-articles, presentations, scenarios, and a game in development.
KingSpoom's RPG Design & Theory Junkyard
Theory and design essays related to creating a roleplaying game.
Land of Shadows
Short Introduction to Roleplaying.
RPG Portal from Japan
Information about tabletop roleplaying in Japan.
Tips, forums, and general information.
Role-playing Games Stack Exchange
RPG-focused Q&A site from Stack Exchange. Real questions with real answers. Best content gets voted up.
Dedicated to the promotion, creation, and review of independent creator-owned roleplaying systems. Also features discussion forums, articles about game design, and design resources.
The Handbook to Roleplaying
Advice for novice roleplayers.