The "Ringworld" role-playing game box set was titled "Larry Niven's Ringworld: Roleplaying Adventure Beneath the Great Arch", referring to the way the Ringworld looked from its interior surface. The authors are credited as Greg Stafford, John Hewitt, Sherman Kahn, Lynn Willis, Sandy Petersen, Rudy Kraft, Charlie Krank, Ed Gore, and Jeff Okamoto. It came in a box set with four books: the Explorer Book, Technology Book, Gamemasters Book, and Creatures Book, a sheet of cardboard miniatures, reference and character sheets, and a set of dice: 2d20 (actually dice with two sets of digits 0 to 9), 1d8, and 2d6.