TSR

TSR (Tactical Studies Rules) is the legendary American publisher responsible for creating Dungeons & Dragons, the role-playing game that launched an entire hobby industry. Their catalog defined the fantasy role-playing genre, producing hundreds of adventure modules, campaign settings, and game systems that have shaped tabletop gaming culture for decades. TSR's influence on game design, storytelling, and popular culture is immeasurable, making them one of the most historically significant game publishers in history.