The role of narrative design in games is to create compelling stories and immersive experiences that engage players emotionally and intellectually. It involves crafting character backstories, dialogue, and overarching plotlines that resonate within the game's environment. Good narrative design helps to build depth in characters and contributes to world-building, making the gameplay more meaningful. Through thoughtful story arcs and well-structured narratives, players are encouraged to explore, invest in, and connect with the game, enhancing overall enjoyment and longevity of engagement.