The field of technical communication studies informational documents, such as instruction manuals or research articles and so on. Games have instructions, or rules, which must be documented. Technical communication scholars have studied documents for video games, but similar research on tabletop rulebook documents appears to be mostly absent, an absence that creates a gap within technical communication research. Filling this gap, my work studies tabletop game rulebooks, which lie within the genre of instruction manuals. Technical communication has produced a theory of effective manual design, and I present much of that theory as, what I call, standards of effective manual design. I observed 30 tabletop game rulebooks to see how well they follow those standards, and I interviewed or surveyed people who played 15 of those games to see how effective the games’ rulebooks are for those people. This allowed me to see how well a rulebook’s adherence to the standards of effective manual design aligned with its effectiveness. This alignment did not always hold; consequently, though an effective rulebook follows the standards of effective manual design, a rulebook can follow said standards yet be ineffective. I conclude that following the standards is only a necessary, not sufficient, condition for making an effective rulebook. The standards must also be used in the correct way and amount.