Ringworld Roleplaying: Following game outlines, players generate and then assume the personalities and physical characteristics of Known Space explorers. These explorers then face challenges and mysteries, as though in a Niven tale. During play, an additional participant, the gamemaster, interprets the Ringworld game rules and manipulates setting, time, the forces of nature, and living opponents. The players determine their explorers' actions; the game rules indicate in an impartial manner how encounters and combats are resolved. A Ringworld game session becomes a drama of successive dangers and triumphs, shared by all.COMPONENTS-EXPLORER BOOK: introduction, human explorer creation; pursuits and skills; game system; essays on Earth, the Belt, Canyon, Down, Gummidgy, Home, Jinx, Margave, Plateau, Silvereyes, We Made It, Wunderland; Kzin explorer creation and in-depth essay; Puppeteer explorer creation and in-depth essay. HUMAN SPACE TECHNOLOGY: autodocs, computers, drugs, energy systems, autopilots, memory plastics, medicinal and recreational drugs, boosterspice, stasis fields, gravity generators, handguns, heavy weapons, vehicles, vac suits, water tools, much more. CREATURES BOOK: complete statistics and lengthy descriptions for aliens, (including Grogs, Outsiders, Kdatlyno, Dolphins, and Bandersnatchi), hominids (including City Builders, Healers, Ghouls, Grass Giants, Muck Ogres, Hairy Ones, Machine People, Valley People, and Vampires), and unusual Ringworld flora and fauna. RINGWORLD BOOK: essays on Ringworld history, the Pak, rishathra, the structure of Ringworld, the shadow-squares, scrith, mysteries of Ringworld, energy and power, Fist-of-God, eyestorms and punctures, the rim transport system, attitude jets, control and repair centers, and more; Ringworld hominid technological devices and weapons; a complete introductory journey to and adventure on the surface of Ringworld; gamemastering tips; plus much more. OTHER COMPONENTS include explorer sheets, game reference sheets, visions of Ringworld (four essays), the Ringworld printout.