Individual players win according to the scoreboard. This is different from the winning team of royals (king and crown prince) and the first ten finishers in the game scoreboard will all be awarded prizes (we will decide exactly what they will be when a game is close to completion. Prizes will be worth something.)
Nobles win the game by being better nobles. They do that by doing more of those things Medieval society considered nobles should be doing, and avoiding those actions that were considered bad form for Medieval aristocrats.
How the Point Score is Calculated