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