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GURPS Lite - http://www.sjgames.com/gurps/lite/
Free 32 page PDF version of the GURPS rules. "Covers the essentials of character creation, combat, success rolls, magic, adventuring, and game mastering." |
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The Window - http://www.mimgames.com/window/
Flexible, modular rules built around three gaming precepts. |
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DUDE Role-Playing Game - http://kuoi.asui.uidaho.edu/~kamikaze/DUDE/
This diceless universal determination engine is a one-stat, cinematic, freeform RPG, with several sourcebooks. |
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OPIGS Supers - http://www.homebrew.net/games/opigs.supers.html
One page gaming system for super heroes. |
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Draft RPG - http://www.ekkaia.org/rpg/draft/
A small set of rules suitable for running campaigns of independent backgrounds. Open content license, downloadable in PDF format. |
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Cyno's Roleplay - http://www.cynosurex.com/Cyno%27s%20Role-Play/
A universal RPG by Chieh Cheng. Approx. 33 pages HTML rules, plus four 10-15 page genre books (fantasy, modern, near-future). |
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EGO-Endless Gaming Options - http://red-irish.itgo.com/Games.html
A simple, universal system, with a stable core rule, a complete foundation, and plenty of room for modifications. Free to all. |
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http://www.talesofadventure.net/1whatsnew/ - http://www.talesofadventure.net/1whatsnew/
A model reality kit, where what seems real is real. |
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Simple Rules Engine - http://dmsteve-jp.tripod.com/
A two page generic skill and attribute based roleplaying engine, focused on characters and stories. |
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Dramats Personae - http://www.malaan.com/dramatis/dramatis.htm
Free simple role-playing system; there are no statistics, little math, no complex charts of equipment, and no magic. Characters represent skilled, but human (or roughly human), beings and have to use their wits rather than their powers, attributes or magic items to succeed. |
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Ex Mortis V 1.0 BRPS - http://www.angelfire.com/games3/exmortis/
Ex Mortis base role playing system. Free to the public. Fully functional RPG. |
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Alternate Realities - http://www.karimnassar.com/AR/
A free universal RPG by Carter Butts, Karim Nassar, and Brian Rayburn. Approx. 88 pages (HTML, MS Word, Postscript). |
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POLY, a free, customizable system for table top and LARP - http://www.angelfire.com/rpg2/undermine/index.html
A modular system that is adaptable to many styles of play. |
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Fantastic Realities - http://jeremy.gagliardi.com/Real-Playing/
Works with any time period and genre, includes 16 species, magic and monster systems, and realistic rules all of which are optional. |
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http://www.rpglibrary.org/systems/prism/ - http://www.rpglibrary.org/systems/prism/
A versatile multi-genre free RPG by Frank J. Perricone. It is a modular system originally intended for use with Rolemaster's combat system. Over 100 pages, illustrated. |