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Open gaming is the movement within the tabletop role-playing game (RPG) industry with similarities to the open source movement. The key aspect is that copyright holders license their works under public copyright licenses that permit others to make copies or create derivative works of the game. A number of role-playing game publishers have joined the open gaming movement, largely as a result of the release of the System Reference Document by Wizards of the Coast, which consisted of the core rules of Dungeons & Dragons 3rd edition. Open gaming has also been popular among small press role-playing game and supplement authors. == Definition == "Open gaming" refers to the practice of publishing content (rules, sourcebooks, etc.) under a free content or open content license, which grants permission to modify, copy, and redistribute some or all of the content. Ryan Dancey, the man who coined the term open gaming, used the term ‘open’ strictly and with reference to the open source movement.〔 He described the Dominion RPG’s original licence as ‘pseudo-open’ and said games like Fuzion and FUDGE that (at the time) did not allow commercial reuse could come under the open gaming mantle if they adopted liberal terms like the Open Game License.〔 The Open Gaming Foundation, which Ryan Dancey founded, maintained a definition of an ‘Open Game license’ while it was active, with two criteria: “1. The license must allow game rules and materials that use game rules to be freely copied, modified and distributed. “2. The license must ensure that material distributed using the license cannot have those permissions restricted in the future.”〔http://www.opengamingfoundation.org/licenses.html〕 The Foundation explicitly stated that the first condition excludes licences that ban commercial use. The second requirement is intended to ensure that the rights granted by the licence are inalienable.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Open gaming」の詳細全文を読む スポンサード リンク
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