GURPS Third Edition is a 91-book series with 91 released primary works first released in 1988 with contributions by Lee Gold, Hunter Johnson, Steve Jackson, Brian J. Underhill, Kirk Wilson Tate, Stephan Jones, J.M. Caparula, Kevin Andrew Murphy, Chris W. McCubbin, Sean Punch, Graeme Davis, Robert M. Schroeck, Thomas Kane, Ann Dupuis, Liz Tornabene, Lynda Mannin-Schwartz, Rob Smith, C.J. Carella, David L. Pulver, Thomas M. Kane, Spider Robinson, Michael Hurst, Aurelio Locsin III, John M. Ford, Jeff Koke, Janet Naylor, Caroline Julian, Sean Barrett, Jon F. Zeigler, Ken Walton, Nigel Findley, Lane Grate, Loyd Blankenship, Malcolm Dale, Klaude Thomas, Stephen Dedman, Phil Masters, S. John Ross, Loren K. Wiseman, Kenneth Hite, Craig Neumeier, Michael S. Shiffer, Sean M. Punch, Terry Pratchett, John Goff, David Pulver, David Thomas, Martin J. Dougherty, Neil A. Frier, Michael S. Schiffer, Elizabeth McCoy, Walter Milliken, William H. Stoddard, David Nilsen, Andy Slack, Douglas E. Berry, Steffan O'Sullivan, Stephen Kenson, James L. Cambias, Lisa J. Steele, Hans-Christian Vortisch, Gene Seabolt, Stefan Jones, Robert Schroeck, Thomas L. Bont, Christopher Thrash, Robert M. Prior, Michele Armellini, Lynette Cowper, Jon Zeigler, Paul Drye, Hans Rancke-Madsen, Robert Pryor, Brian Underhill, John J. Miller, and Glen Johnson.