When a budding writer wants to write a novel, they’ll study novels, and learn their underlying structure. It’s incredibly important to understand how those who came before you worked, so you can stand on their shoulders. When a musician wants to write music, they’ll listen to music, and learn its underlying structure for the same reason. And when a game designer wants to balance a board game, they should study board games, and you guessed it, study its underlying structure. If you want a game balance example, read on.