Dungeons & Dragons was forged through collaboration and feuding. The latter culminated in a lawsuit filed by co-creator Dave Arneson against Gary Gygax and TSR, respectively, the other co-creator and the original publisher of Dungeons & Dragons. Unfortunately, understanding the unique output of collaboration that created Dungeons & Dragons requires looking at some of the feuds that shaped it.
Dave Arneson Ludography
A Dave Arneson Ludography — listing the over 70 games Dave Arneson (co-creator of Dungeons & Dragons) was a part of.