The OOGL was used by two games before the authors of the OOGL ceased using it for their own work in late 2002 (and suggested that others do the same), in favor of the Creative Commons Attribution-ShareAlike License.
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The most common open gaming license in use by commercial role-playing game publishers is the OGL, and the most popular noncommercial licenses are the Creative Commons Attribution-ShareAlike License and the GNU Free Documentation License.
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The Fudge role-playing game system was created in 1992 by Steffan O'Sullivan with extensive help from the rec.games.design community.
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