XIII century, Europe, royal market courtyard. You are a knight who joined the medieval tournament. Your task is "simple". Jump on your trusty steed, grab your lance & defeat the enemy.
Take into consideration speed, accuracy, strength. Equipment is also important. The better gear the easier the task. Oh, and other knights - they want to win as much as you do.
You beat them the king's greatest treasure is yours. And I didn't mean gold.