Polyhedron 90 was a roleplaying magazine published in December 1993. It contained many roleplaying articles, including an adventure for the Star Wars: The Roleplaying Game. The article was called The New Republic Campaign: The Battle for Endor from the PCs' Perspective and was written by Bill Slavicsek.

Like all supplements printed in Polyhedron prior to 2002, the article is considered ambiguously canon.

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