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	<entry>
		<id>https://wiki.rpg.net/index.php?title=OGRE:Main_Page&amp;diff=133780</id>
		<title>OGRE:Main Page</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=OGRE:Main_Page&amp;diff=133780"/>
		<updated>2010-01-02T04:10:33Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* License */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;* (Expand these sections into pages as needed)&lt;br /&gt;
* (We need a logo image)&lt;br /&gt;
* (Please check spelling, grammar and style. Don&#039;t hesitate to edit as needed)&lt;br /&gt;
* (Everybody is welcome to edit or add)&lt;br /&gt;
* (NEW PROPOSALS (e.g. changing a rule, or the name of attribute) SHOULD BE MADE IN ITALICS, NEXT TO THE ORIGINAL TEXT, WITHOUT DELETING IT)&lt;br /&gt;
&lt;br /&gt;
== Introduction ==&lt;br /&gt;
&lt;br /&gt;
The Open Game-Book Rules Engine&#039;s purpose is to create a set of flexible rules for game-books. When completed, these rules, will allow any author to create their own game-books concentrating on the fiction and the game themselves, without having to design a rule systems. The reader-player, in the other hand, will benefit for having one set of familiar rules.&lt;br /&gt;
&lt;br /&gt;
OGRE uses normal, six sided dice, as these are the most commonly available.&lt;br /&gt;
&lt;br /&gt;
== Game-book defined ==&lt;br /&gt;
&lt;br /&gt;
From the Wikipedia  entry on Gamebooks. [http://en.wikipedia.org/wiki/Gamebook]&lt;br /&gt;
&lt;br /&gt;
At the end of a text section, the reader is usually presented with a choice of narrative branches that they may follow, with each option containing a reference to the number of the paragraph that should be read next if the option is chosen. The reader may eventually reach a concluding paragraph which will bring the narrative to an end. In most gamebooks only one (or if more than this, a distinct minority) of the concluding paragraphs will end the narrative with a &amp;quot;successful&amp;quot; ending, with the others ending the narrative with a &amp;quot;failure&amp;quot; ending.[3]&lt;br /&gt;
&lt;br /&gt;
Gamebooks are usually written in the second person with the reader assuming the role of a fictional character. The titles are usually published in series containing several books, although individual gamebooks have also been published. While the books in many series are stand-alone narratives, others continue the narrative from the previous books in the series.&lt;br /&gt;
&lt;br /&gt;
There are three types of gamebooks. The first is the branching-plot novel (an example of this is the Choose Your Own Adventure series of gamebooks), which require the reader to make choices but are otherwise like a regular novel. The second type is the role-playing game solitaire adventure (an example of this is the Tunnels and Trolls series of gamebooks), which combines the branching-plot novel with the rules of a role-playing game, allowing the game to be played without a Gamemaster but requiring the purchase of separate manuals.&#039;&#039;&#039; The third type is the adventure gamebook (an example of this is the Fighting Fantasy series of gamebooks), which combines the branching-plot novel with simple role-playing rules included with each book.[4]&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
The OGRE system is of the this third kind of Gamebooks.&lt;br /&gt;
&lt;br /&gt;
== Characters ==&lt;br /&gt;
&lt;br /&gt;
The player-reader will, usually, play 1 character.&lt;br /&gt;
&lt;br /&gt;
=== Attributes ===&lt;br /&gt;
&lt;br /&gt;
# Vigor (Strength and Health ) &lt;br /&gt;
# Grace (Agility and Dexterity)&lt;br /&gt;
# Perception.&lt;br /&gt;
# Magic.&lt;br /&gt;
# Mental (IQ and Education)&lt;br /&gt;
&lt;br /&gt;
Typical Values: 4 to 24, for those using 4 dice.&lt;br /&gt;
&lt;br /&gt;
==== Creating Attributes: ====&lt;br /&gt;
&lt;br /&gt;
* Standard &amp;quot;Medieval Fantasy&amp;quot; Hero 12 + 2 dice each&lt;br /&gt;
&lt;br /&gt;
* Standard &amp;quot;Young Adult Fiction&amp;quot; Hero (from 12 to 15 y/o) 8 + 2 dice each, perhaps more in Magic.&lt;br /&gt;
&lt;br /&gt;
* &amp;quot;Realistic&amp;quot; fiction 4 + 3 dice each&lt;br /&gt;
&lt;br /&gt;
(Of course, the Author can use the name he or she chooses.)&lt;br /&gt;
&lt;br /&gt;
== License ==&lt;br /&gt;
&lt;br /&gt;
Proposed: Creative Commons -SA -by (Commercial usage OK, Modifications OK)&lt;br /&gt;
*&#039;&#039;Not sure about the forced sharing thing with the Share Alike license. I recommend Sampling Plus (distribution OK but not commercially, only derivatives can be sold, so you&#039;d have to actually create a gamebook to derive financial gain. - [http://creativecommons.org/licenses/sampling+/1.0/] )&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
== Section: Examples ==&lt;br /&gt;
--[[User:Migueldeluis|Migueldeluis]] 12:48, 7 December 2009 (UTC)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=OGRE:Main_Page&amp;diff=133779</id>
		<title>OGRE:Main Page</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=OGRE:Main_Page&amp;diff=133779"/>
		<updated>2010-01-02T04:09:19Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* License */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;* (Expand these sections into pages as needed)&lt;br /&gt;
* (We need a logo image)&lt;br /&gt;
* (Please check spelling, grammar and style. Don&#039;t hesitate to edit as needed)&lt;br /&gt;
* (Everybody is welcome to edit or add)&lt;br /&gt;
* (NEW PROPOSALS (e.g. changing a rule, or the name of attribute) SHOULD BE MADE IN ITALICS, NEXT TO THE ORIGINAL TEXT, WITHOUT DELETING IT)&lt;br /&gt;
&lt;br /&gt;
== Introduction ==&lt;br /&gt;
&lt;br /&gt;
The Open Game-Book Rules Engine&#039;s purpose is to create a set of flexible rules for game-books. When completed, these rules, will allow any author to create their own game-books concentrating on the fiction and the game themselves, without having to design a rule systems. The reader-player, in the other hand, will benefit for having one set of familiar rules.&lt;br /&gt;
&lt;br /&gt;
OGRE uses normal, six sided dice, as these are the most commonly available.&lt;br /&gt;
&lt;br /&gt;
== Game-book defined ==&lt;br /&gt;
&lt;br /&gt;
From the Wikipedia  entry on Gamebooks. [http://en.wikipedia.org/wiki/Gamebook]&lt;br /&gt;
&lt;br /&gt;
At the end of a text section, the reader is usually presented with a choice of narrative branches that they may follow, with each option containing a reference to the number of the paragraph that should be read next if the option is chosen. The reader may eventually reach a concluding paragraph which will bring the narrative to an end. In most gamebooks only one (or if more than this, a distinct minority) of the concluding paragraphs will end the narrative with a &amp;quot;successful&amp;quot; ending, with the others ending the narrative with a &amp;quot;failure&amp;quot; ending.[3]&lt;br /&gt;
&lt;br /&gt;
Gamebooks are usually written in the second person with the reader assuming the role of a fictional character. The titles are usually published in series containing several books, although individual gamebooks have also been published. While the books in many series are stand-alone narratives, others continue the narrative from the previous books in the series.&lt;br /&gt;
&lt;br /&gt;
There are three types of gamebooks. The first is the branching-plot novel (an example of this is the Choose Your Own Adventure series of gamebooks), which require the reader to make choices but are otherwise like a regular novel. The second type is the role-playing game solitaire adventure (an example of this is the Tunnels and Trolls series of gamebooks), which combines the branching-plot novel with the rules of a role-playing game, allowing the game to be played without a Gamemaster but requiring the purchase of separate manuals.&#039;&#039;&#039; The third type is the adventure gamebook (an example of this is the Fighting Fantasy series of gamebooks), which combines the branching-plot novel with simple role-playing rules included with each book.[4]&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
The OGRE system is of the this third kind of Gamebooks.&lt;br /&gt;
&lt;br /&gt;
== Characters ==&lt;br /&gt;
&lt;br /&gt;
The player-reader will, usually, play 1 character.&lt;br /&gt;
&lt;br /&gt;
=== Attributes ===&lt;br /&gt;
&lt;br /&gt;
# Vigor (Strength and Health ) &lt;br /&gt;
# Grace (Agility and Dexterity)&lt;br /&gt;
# Perception.&lt;br /&gt;
# Magic.&lt;br /&gt;
# Mental (IQ and Education)&lt;br /&gt;
&lt;br /&gt;
Typical Values: 4 to 24, for those using 4 dice.&lt;br /&gt;
&lt;br /&gt;
==== Creating Attributes: ====&lt;br /&gt;
&lt;br /&gt;
* Standard &amp;quot;Medieval Fantasy&amp;quot; Hero 12 + 2 dice each&lt;br /&gt;
&lt;br /&gt;
* Standard &amp;quot;Young Adult Fiction&amp;quot; Hero (from 12 to 15 y/o) 8 + 2 dice each, perhaps more in Magic.&lt;br /&gt;
&lt;br /&gt;
* &amp;quot;Realistic&amp;quot; fiction 4 + 3 dice each&lt;br /&gt;
&lt;br /&gt;
(Of course, the Author can use the name he or she chooses.)&lt;br /&gt;
&lt;br /&gt;
== License ==&lt;br /&gt;
&lt;br /&gt;
Proposed: Creative Commons -SA -by (Commercial usage OK, Modifications OK)&lt;br /&gt;
*&#039;&#039;Not sure about the forced sharing thing with the Share Alike license. I recommend Sampling Plus (distribution OK but not commercially, only derivatives can be sold. - [http://creativecommons.org/licenses/sampling+/1.0/] )&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
== Section: Examples ==&lt;br /&gt;
--[[User:Migueldeluis|Migueldeluis]] 12:48, 7 December 2009 (UTC)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=111805</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=111805"/>
		<updated>2009-06-21T04:54:42Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* Creative Commons Licenses */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
This page collects all the games under an open license like the [[Open Game License]] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
This page operates under the following definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiation between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to contact the author.&lt;br /&gt;
&lt;br /&gt;
= Retroclones =&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Retro-clones&#039;&#039;&#039; are new games that are compatible with games that are now out-of-print. They are listed separately to the other games.&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
== Retro-Clones ==&lt;br /&gt;
* [[OSRIC]] for 1E AD&amp;amp;D ([http://www.knights-n-knaves.com/osric download]) (OGL and OSRIC Open License)&lt;br /&gt;
* [[Labyrinth Lord]] for [[Rules Cyclopedia]] D&amp;amp;D ([http://www.goblinoidgames.com/labyrinthlord.htm download]) (OGL and [http://www.goblinoidgames.com/ll_license1.zip Labyrinth Lord Trademark License])&lt;br /&gt;
* [[Swords &amp;amp; Wizardry]] for 0E D&amp;amp;D ([http://www.swordsandwizardry.com/?page_id=4 download]) (OGL and the Swords &amp;amp; Wizardry Compatability Statement License)&lt;br /&gt;
* [[Swords &amp;amp; Wizardry Whitebox]] for Whitebox D&amp;amp;D ([http://www.swordsandwizardry.com/?page_id=6 download]) (OGL and the Swords &amp;amp; Wizardry Compatability Statement License)&lt;br /&gt;
* [[4C System]] for the Marvel RPG ([http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip download]) (Public Domain; Direct link to file)&lt;br /&gt;
* [[Warrior &amp;amp; Wizard]] for [[The Fantasy Trip]] (download [http://docs.google.com/Doc?docid=dcsfz7gv_9gzdh7hdz&amp;amp;hl=en CC] or [http://docs.google.com/View?id=dcsfz7gv_22xmrn2sgg OGL] version) (Creative Commons Attribution-ShareAlike; Direct link to file)&lt;br /&gt;
&lt;br /&gt;
== [[Open Game License]] ([http://www.wizards.com/d20/files/OGLv1.0a.rtf Direct Link]) ==&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], Basic Fantasy Role-Playing Game.&lt;br /&gt;
* [http://www.wizards.com/default.asp?x=d20/article/msrd Modern d20 SRD]&lt;br /&gt;
* [http://www.faterpg.com/dl/animed20srd.pdf d20 Anime SRD] (direct link to file)&lt;br /&gt;
* [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0] (direct link to the file)&lt;br /&gt;
* [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.darkshire.net/jhkim/rpg/srd/srd_runic/index.html Runic], Runequest RPG&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=29076 Iridium System]&lt;br /&gt;
&lt;br /&gt;
== Open Game License and Another License ==&lt;br /&gt;
&lt;br /&gt;
These games release their material as Open Game Content, but also provide another, more restricted, license to allow publishers to refer to Product Identity.&lt;br /&gt;
&lt;br /&gt;
* [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD], [[Dungeons and Dragons]] (OGL and d20 System License)&lt;br /&gt;
* [http://www.goblinoidgames.com/mutantfuture.htm Mutant Future] (OGL and Mutant Future Trademark License)&lt;br /&gt;
* [http://www.goblinoidgames.com/gore.htm GORE] (OGL and GORE License)&lt;br /&gt;
* [http://yeoldegamingcompanye.com/wayfarersmain.htm Wayfarers] (OGL and open-ended agreement)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (OGL and Prometheus License)&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (OGL and FUDGE System Trademark License; also under its own license)&lt;br /&gt;
* [http://www.mutantsandmasterminds.com/ Mutants &amp;amp; Masterminds] (OGL and [http://www.mutantsandmasterminds.com/superlink/000080.php M&amp;amp;M Superlink])&lt;br /&gt;
* [http://true20.com/ True20] (OGL and [http://true20.com/licensing/True20TrademarkLicense.htm True20 Adventure Roleplaying Trademark License])&lt;br /&gt;
* [http://www.spellchrome.com/ Spellchrome] (OGL and Non-Open Game Content)&lt;br /&gt;
&lt;br /&gt;
== Creative Commons Licenses ==&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://open.crngames.com/src/donjon.html Donjon] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.lulu.com/content/866835 Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.fatesworsethandeath.com/ORC/index.htm Organic Rules Components (ORC)] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://rpg.starwreck.com Star Wreck] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://www.allenvarney.com/noteworthy.html Noteworthy] (Attribution/Non-Commercial)&lt;br /&gt;
* [http://gregstolze.com/ExecutiveDecision.zip Executive Decision] (Attribution/Non-Commercial/Share-Alike; direct link to file)&lt;br /&gt;
* [http://gregstolze.com/inSpaaace.zip ...in Spaaace!] (Attribution/Non-Commercial/Share-Alike; direct link to file)&lt;br /&gt;
&lt;br /&gt;
== GNU licenses ==&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters] (GNU Free Documentation License)&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (GNU Free Documentation Licence and GNU General Public License)&lt;br /&gt;
* [http://webdav.freeroleplay.org/fringe/trunk/ Fringe] (OpenOffice Writer format) (GNU General Public License)&lt;br /&gt;
&lt;br /&gt;
== Other ==&lt;br /&gt;
* [http://www.dominionrules.org/ Dominion Rules] (Dominion Rules Licence)&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=28830 Action! System] (Action! System Open License)&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=2589 Active Exploits] (Active Exploits Distribution and Expansion License)&lt;br /&gt;
* [[Redbox Hack]] (license unclear; readers told to &amp;quot;do what you&#039;d like with the thing&amp;quot;).&lt;br /&gt;
* [[Dungeons and Dragons Fourth Edition]] ([http://www.wizards.com/default.asp?x=d20/welcome Game System License])&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=95142</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=95142"/>
		<updated>2008-11-13T03:43:55Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
There is no simple or comprehensive definition of an &amp;quot;open license&amp;quot;. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t useful in the context of RPG game rules. This page operates under the following definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiation between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author.&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039; Secondary Licenses &#039;&#039;&lt;br /&gt;
&lt;br /&gt;
Many games, particularly those published under the Open Game License, also include a secondary license which allows the publication of compatable material using the trademarks of the game. These licenses restrict the publisher further than the OGL does, and sometimes include requirements that do not qualify as an open license. For example, [[Mutants &amp;amp; Masterminds]] is released under the OGL, and also under M&amp;amp;M Superlink. Superlink is not an open license - it requires potential publishers to contact publisher Green Ronin for their project to be approved. Mutants &amp;amp; Masterminds is still listed on this page because its content is under the OGL, though its trademarks are not.&lt;br /&gt;
&lt;br /&gt;
&#039;&#039; Retro-Clones &#039;&#039;&lt;br /&gt;
&lt;br /&gt;
Retro-clones are new games that are compatible with games that are now out-of-print. Currently, only editions of [[Dungeons and Dragons]] have retro-clones, because the creation of these games is facilitated by the Open Game Content of the SRD. [[OSRIC]], [[Labyrinth Lord]] and [[Swords &amp;amp; Wizardry]] are retro-clones of 1st edition Advanced Dungeons and Dragons, Basic and Expert Dungeons and Dragons and so-called 0e Dungeons and Dragons respectively. [[GORE]] is also sometimes listed as a retro-clone, though it is not a clone of a particular game system.&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]] ([http://www.wizards.com/d20/files/OGLv1.0a.rtf Direct Link])&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], Basic Fantasy Role-Playing Game.&lt;br /&gt;
* [http://www.wizards.com/default.asp?x=d20/article/msrd Modern d20 SRD]&lt;br /&gt;
* [http://www.faterpg.com/dl/animed20srd.pdf d20 Anime SRD] (direct link to file)&lt;br /&gt;
* [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0] (direct link to the file)&lt;br /&gt;
* [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.darkshire.net/jhkim/rpg/srd/srd_runic/index.html Runic], Runequest RPG&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=29076 Iridium System]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Open Game License and Another License&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
These games release their material as Open Game Content, but also provide another, more restricted, license to allow publishers to refer to Product Identity.&lt;br /&gt;
* [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD], Dungeons and Dragons (OGL and d20 System License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (OGL and OSRIC Open License)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (OGL and [http://www.goblinoidgames.com/ll_license1.zip Labyrinth Lord Trademark License])&lt;br /&gt;
* [http://www.goblinoidgames.com/mutantfuture.htm Mutant Future] (OGL and Mutant Future Trademark License)&lt;br /&gt;
* [http://www.goblinoidgames.com/gore.htm GORE] (OGL and GORE License)&lt;br /&gt;
* [http://yeoldegamingcompanye.com/wayfarersmain.htm Wayfarers] (OGL and open-ended agreement)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (OGL and Prometheus License)&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (OGL and FUDGE System Trademark License; also under its own license)&lt;br /&gt;
* [http://www.keepandshare.com/doc/show.php?i=335944&amp;amp;cat=3&amp;amp;fclick=y Swords &amp;amp; Wizardry] (OGL and the Swords &amp;amp; Wizardry Compatability Statement License)&lt;br /&gt;
* [http://www.mutantsandmasterminds.com/ Mutants &amp;amp; Masterminds] (OGL and [http://www.mutantsandmasterminds.com/superlink/000080.php M&amp;amp;M Superlink])&lt;br /&gt;
* [http://true20.com/ True20] (OGL and [http://true20.com/licensing/True20TrademarkLicense.htm True20 Adventure Roleplaying Trademark License])&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://open.crngames.com/src/donjon.html Donjon] (Attribution/Share-Alike)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.fatesworsethandeath.com/ORC/index.htm Organic Rules Components (ORC)] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://rpg.starwreck.com Star Wreck] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://www.allenvarney.com/noteworthy.html Noteworthy] (Attribution/Non-Commercial)&lt;br /&gt;
* [http://gregstolze.com/ExecutiveDecision.zip Executive Decision] (Attribution/Non-Commercial/Share-Alike; direct link to file)&lt;br /&gt;
* [http://gregstolze.com/inSpaaace.zip ...in Spaaace!] (Attribution/Non-Commercial/Share-Alike; direct link to file)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (also GNU General Public License)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;br /&gt;
* [http://www.dominionrules.org/ Dominion Rules] (Dominion Rules Licence)&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=28830 Action! System] (Action! System Open License)&lt;br /&gt;
* [http://rpg.drivethrustuff.com/product_info.php?products_id=2589 Active Exploits] (Active Exploits Distribution and Expansion License)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82391</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82391"/>
		<updated>2008-05-31T01:52:58Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
So far I haven&#039;t found a simple and comprehensive definition of what exactly constitutes an &amp;quot;open license&amp;quot; in the general sense. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t really usefull in the context of RPG game rules, so here is my ad-hoc and a bit vague definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiatian between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author. (If somebody has a better definition, I&#039;m all for it.)&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], basic fantasy role-playing game (basic retro-clone).&lt;br /&gt;
* [http://www.wizards.com/dnd/ Dungeons &amp;amp; Dragons (d20 System version)]&lt;br /&gt;
:: [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD]&lt;br /&gt;
:: (note that usage of the d20 System name and logo requires observing further restrictions)&lt;br /&gt;
* [http://www.faterpg.com/ Fate] (derived from the Fudge OGL)&lt;br /&gt;
:: [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0 SRD]&lt;br /&gt;
:: [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century SRD]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (also available under its own license)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (basic retro-clone)&lt;br /&gt;
* [http://www.darkshire.net/jhkim/rpg/srd/srd_runic/index.html Runic] (Used in the Runequest RPG)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (standard SRD plus character creation and advancement)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://rpg.starwreck.com Star Wreck] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://www.allenvarney.com/noteworthy.html Noteworthy] (Attribution/Non-Commercial)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (Free Documentation License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (its own variation on OGL, 1e retro-clone)&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82390</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82390"/>
		<updated>2008-05-31T01:35:21Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
So far I haven&#039;t found a simple and comprehensive definition of what exactly constitutes an &amp;quot;open license&amp;quot; in the general sense. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t really usefull in the context of RPG game rules, so here is my ad-hoc and a bit vague definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiatian between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author. (If somebody has a better definition, I&#039;m all for it.)&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], basic fantasy role-playing game (basic retro-clone).&lt;br /&gt;
* [http://www.wizards.com/dnd/ Dungeons &amp;amp; Dragons (d20 System version)]&lt;br /&gt;
:: [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD]&lt;br /&gt;
:: (note that usage of the d20 System name and logo requires observing further restrictions)&lt;br /&gt;
* [http://www.faterpg.com/ Fate] (derived from the Fudge OGL)&lt;br /&gt;
:: [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0 SRD]&lt;br /&gt;
:: [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century SRD]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (also available under its own license)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (basic retro-clone)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (standard SRD plus character creation and advancement)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://rpg.starwreck.com Star Wreck] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://www.allenvarney.com/noteworthy.html Noteworthy] (Attribution/Non-Commercial)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (Free Documentation License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (its own variation on OGL, 1e retro-clone)&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82389</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82389"/>
		<updated>2008-05-31T01:30:24Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
So far I haven&#039;t found a simple and comprehensive definition of what exactly constitutes an &amp;quot;open license&amp;quot; in the general sense. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t really usefull in the context of RPG game rules, so here is my ad-hoc and a bit vague definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiatian between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author. (If somebody has a better definition, I&#039;m all for it.)&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], basic fantasy role-playing game (basic retro-clone).&lt;br /&gt;
* [http://www.wizards.com/dnd/ Dungeons &amp;amp; Dragons (d20 System version)]&lt;br /&gt;
:: [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD]&lt;br /&gt;
:: (note that usage of the d20 System name and logo requires observing further restrictions)&lt;br /&gt;
* [http://www.faterpg.com/ Fate] (derived from the Fudge OGL)&lt;br /&gt;
:: [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0 SRD]&lt;br /&gt;
:: [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century SRD]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (also available under its own license)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (basic retro-clone)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (standard SRD plus character creation and advancement)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://rpg.starwreck.com Star Wreck] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (Free Documentation License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (its own variation on OGL, 1e retro-clone)&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82388</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82388"/>
		<updated>2008-05-31T01:25:46Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
So far I haven&#039;t found a simple and comprehensive definition of what exactly constitutes an &amp;quot;open license&amp;quot; in the general sense. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t really usefull in the context of RPG game rules, so here is my ad-hoc and a bit vague definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiatian between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author. (If somebody has a better definition, I&#039;m all for it.)&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], basic fantasy role-playing game (basic retro-clone).&lt;br /&gt;
* [http://www.wizards.com/dnd/ Dungeons &amp;amp; Dragons (d20 System version)]&lt;br /&gt;
:: [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD]&lt;br /&gt;
:: (note that usage of the d20 System name and logo requires observing further restrictions)&lt;br /&gt;
* [http://www.faterpg.com/ Fate] (derived from the Fudge OGL)&lt;br /&gt;
:: [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0 SRD]&lt;br /&gt;
:: [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century SRD]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (also available under its own license)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (basic retro-clone)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (standard SRD plus character creation and advancement)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
* [http://www.costik.com/weblog/2005_08_01_blogchive.html#112454587656432430 Violence] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (Free Documentation License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (its own variation on OGL, 1e retro-clone)&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
	<entry>
		<id>https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82387</id>
		<title>Open Game Systems</title>
		<link rel="alternate" type="text/html" href="https://wiki.rpg.net/index.php?title=Open_Game_Systems&amp;diff=82387"/>
		<updated>2008-05-31T01:05:36Z</updated>

		<summary type="html">&lt;p&gt;Ilnaras: /* The List: */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[Category:OpenLicense]]&lt;br /&gt;
&lt;br /&gt;
Roughly once a month, there&#039;s a thread on RPGnet asking about what systems are available under an open license like the OGL or the Creative Commons licenses. This project aims to collect all those games, ordered by license, on one page, to help aspiring game designers and publishers find an open system for their games.&lt;br /&gt;
&lt;br /&gt;
= Definition: What is an Open License? =&lt;br /&gt;
&lt;br /&gt;
So far I haven&#039;t found a simple and comprehensive definition of what exactly constitutes an &amp;quot;open license&amp;quot; in the general sense. The [http://www.opensource.org/docs/osd Open Source Definition], used by the Open Source Initiative, isn&#039;t really usefull in the context of RPG game rules, so here is my ad-hoc and a bit vague definition:&lt;br /&gt;
&lt;br /&gt;
&amp;quot;An Open License allows the free and perpetual re-use of original material by anybody willing to follow the restrictions of said license, without an explicit contact or negotiatian between original author and licensee.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In other words, if something is available under an open license, I can use and re-use it for free, as long as I respect the restrictions laid out in the license, without having to ask or contact the author. (If somebody has a better definition, I&#039;m all for it.)&lt;br /&gt;
&lt;br /&gt;
Good examples of Open Licenses used for RPG systems are the [[Open Game License]], the original [http://en.wikipedia.org/wiki/Fudge_%28role-playing_game_system%29 Fudge License] and various [http://en.wikipedia.org/wiki/Creative_Commons_licenses Creative Commons Licenses]. &lt;br /&gt;
&lt;br /&gt;
Many of those licenses are not compatible with each other, so people wishing to use material covered under multiple licenses should keep this in mind. (And probably consult a lawyer. Or at least the licenses FAQ.)&lt;br /&gt;
&lt;br /&gt;
= The List: =&lt;br /&gt;
&lt;br /&gt;
The following systems are available under an open license and are thus free to use in your own publications. (Though with varying restriction on the use of the material.) &lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[[Open Game License]]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.basicfantasy.org/downloads.html BFRPG], basic fantasy role-playing game (basic retro-clone).&lt;br /&gt;
* [http://www.wizards.com/dnd/ Dungeons &amp;amp; Dragons (d20 System version)]&lt;br /&gt;
:: [http://www.wizards.com/default.asp?x=d20/article/srd35 d20 System 3.5 SRD]&lt;br /&gt;
:: (note that usage of the d20 System name and logo requires observing further restrictions)&lt;br /&gt;
* [http://www.faterpg.com/ Fate] (derived from the Fudge OGL)&lt;br /&gt;
:: [http://www.faterpg.com/dl/Fate-SRD-2005-03-31.rtf Fate 2.0 SRD]&lt;br /&gt;
:: [http://www.faterpg.com/dl/sotc-srd.html Spirit of the Century SRD]&lt;br /&gt;
* [http://www.action-system.com/ Action! System]&lt;br /&gt;
* [http://www.fudgerpg.com/fudge.html FUDGE] (also available under its own license)&lt;br /&gt;
* [http://www.goblinoidgames.com/labyrinthlord.htm Labyrinth Lord] (basic retro-clone)&lt;br /&gt;
* [http://www.prometheusgaming.com/ Prometheus SRD] (standard SRD plus character creation and advancement)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creative Commons Licenses&#039;&#039;&#039;&lt;br /&gt;
* [http://www.bullypulpitgames.com/games/index.php?game=drowning_and_falling Drowning and Falling] (Attribution/Non-Commercial/Share-Alike)&lt;br /&gt;
* [http://tsoy.crngames.com/ The Shadow of Yesterday] (Attribution)&lt;br /&gt;
* [http://bayn.org/wushu/wushu-open.html Wushu Open] (Attribution)&lt;br /&gt;
* [http://wiki.saberpunk.net/Wushu/OpenReloaded Wushu Open Reloaded] (Attribution/Share-Alike)&lt;br /&gt;
* [http://www.harlekin-maus.com/games/shadows/shadows.html Shadows] (Attribution)&lt;br /&gt;
* [http://www.sanestudios.co.uk Myriad] (Attribution)&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;GNU free documentation license&#039;&#039;&#039;&lt;br /&gt;
* [http://www.godsmonsters.com/ Gods and Monsters]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Other&#039;&#039;&#039;&lt;br /&gt;
* [http://worldforge.org/dev/content/rules/circe/ Circe] (Free Documentation License)&lt;br /&gt;
* [http://www.knights-n-knaves.com/osric OSRIC] (its own variation on OGL, 1e retro-clone)&lt;br /&gt;
* [http://hazardstudio.net/sitebuildercontent/sitebuilderfiles/4csystem.zip 4C System] (Public Domain; Direct link to file)&lt;/div&gt;</summary>
		<author><name>Ilnaras</name></author>
	</entry>
</feed>