noun
rule book; rulebook
Refers to a book or document containing the official rules of a game, sport, organization, or system.
新しいゲームを始める前に、ルールブックをよく読んでください。
Please read the rule book carefully before starting the new game.
この競技のルールブックは毎年改訂さ
The rule book for this competition is revised every year.