The GRR2001 Mutants & Masterminds Core Rulebook is a first edition superhero genre role-playing game published by Green Ronin Publishing in 2002. Written by Steve Kenson, the book features 192 pages of gameplay and fantasy elements, with illustrations included. The rulebook measures 11 inches in length, 8.5 inches in width, and 28 ounces in weight, making it a substantial resource for fans of the genre looking to immerse themselves in a world of superheroes and supernatural powers.
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