This is a listing of the publications from Steve Jackson Games and other licensed publishers for the GURPS role-playing game. Fourth edition Core books These are the books necessary to play, with the core rules used in all settings (GURPS Basic Set: Characters and Campaigns), plus basic accessories. GURPS Basic Set: Characters GURPS Basic Set: Campaigns GURPS GM's Screen Free core books GURPS Lite A 32-page introduction to the rules of GURPS based on the core rules in the GURPS 4e Basic Set (mainly Characters). It includes basic character creation with advantages, disadvantages, skills and equipment, as well as some rules for playing. It is freely available, as a PDF from the Steve Jackson Games website Warehouse 23. It is a supplement to some GURPS books. Unlike the 3E version of GURPS Lite, this did not include Magery or any spells, but does include the new "Jumper" Advantage. GURPS Ultra-Lite Core GURPS rules condensed to a single page. Freely available as a PDF from the Steve Jackson Games website Warehouse 23. GURPS Update The official conversion guide from 3rd to 4th edition, released as a free PDF file. It is also included in the purchaseable GM's screen. Rules supplements These books detail general rules not used in all possible campaign, such as rules for magic spells, for superpowers and for martial arts, and also state-based treatments of cities, military units and other organizations. GURPS Boardroom and Curia (PDF) by Matt Rigsby GURPS City Stats (PDF) by William H. Stoddard GURPS Gun Fu (PDF) by S. A. Fisher, Sean Punch, and Hans-Christian Vortisch GURPS Magic Magic rules from the Basic set are expanded, detailing a large number of spells, and rules for alternative magic systems, magic item creation, alchemy etc. GURPS Martial Arts by Peter Dell'Orto Includes new perks, skills, techniques, styles, weapons, and extended combat and injury rules, as well as history on the martial arts, pregenerated NPCs, and ideas for martial-arts campaigns. GURPS Mass Combat (PDF), by David Pulver Gives rules for large-scale battles between military units, as well as allowing for the actions of player characters. GURPS Powers by Sean Punch Extends the basic character creation rules to better handle high powered characters, and allow highly detailed customization of powers in which each power consists of a range of abilities (ie, advantages) and a talent, with a "source" and a "focus", adding color and helping to tie together