From the introduction: The Legend of Zelda series of video games have been part of the gaming landscape since the beginning of Nintendo’s video gaming consoles. They feature a unique blend of exploration, fantasy, and heroic adventure, which harkens back to the stories of knights and kings battling dragons and demons, rescuing princesses, and saving the world from untimely ends. ... Reclaim the Wild contains all the rules you need to start playing, but how you approach it might depend on your familiarity with Breath of the Wild and with Zelda titles in general. User summary: The System Reference Document is derived from - and very similar to - Reclaim the Wild.