* No Central Database: There is no comprehensive database tracking all books about games across all genres and languages.
* Varying Definitions: "Game" can refer to board games, video games, sports, card games, and more. What counts as a book about a game is also subjective (strategy guides, fictional narratives, historical analyses, etc.).
* Popularity Changes: Over time, the popularity of games and the number of books written about them fluctuates.
However, here are some strong contenders for games with extensive written material:
* Chess: Chess has a vast history and literature. It's been played for centuries, with countless books dedicated to its history, strategy, and famous players.
* Dungeons & Dragons: This tabletop role-playing game has a massive and devoted fanbase. There are countless rulebooks, campaign settings, adventure modules, novels, and other publications.
* Pokémon: This video game franchise has spawned a huge amount of merchandise, including numerous guidebooks, strategy guides, and novels based on the games and anime.
* Magic: The Gathering: As another popular tabletop game, Magic has an enormous library of books covering its lore, strategy, and tournament history.
Ultimately, finding the "most written about" game is difficult, but these examples demonstrate the massive amount of literary material some games have inspired.