Description: (List of role-playing game designers)
David Lance Arneson played a significant role in shaping the world of gaming by co-developing Dungeons & Dragons with Gary Gygax in the early 1970s. He introduced key elements like cooperative storytelling and diverse adventuring environments. Arneson's passion for wargaming inspired him to create Blackmoor, the precursor to D&D. Despite disagreements over recognition and compensation, he remained a dedicated contributor to the gaming community as an independent designer and educator until his passing in 2009.