Games like Diplomacy require players to manage intricate webs of alliances and secret agreements. A mobile app could help track promises, betrayals, and strategy notes across multiple games.
Serious players would pay a few dollars for features like turn reminders, relationship mapping, and victory condition tracking.
MVP would be a simple note-taking app with player relationship tags. Later add game-specific templates.
Challenge is small niche audience and difficulty demonstrating value beyond pen-and-paper.