From the introduction:
This book was designed to bring players and Game Master’s alike into the world of the Legend of Zelda without having to write volumes of optional rules themselves. In addition, the source material collected within was researched from dozens of sources, and we have made every possible attempt to stick as closely to the canon of the Legend of Zelda material as possible.
This impressive and high-quality supplement adapts Nintendo's Legend of Zelda series to the D20 OGL system. It includes chapters on: the setting; the tribes; classes; performances, feats, and skills; character details; magic of the Tri-Force (with Aspect spell lists); prestige classes; monsters; and a gazetteer. All aspects of the document are geared toward an immersive D20 experience in the world of Zelda.