Parkour is an extreme sport and is mostly done on the city. Your objective is to run at full speed so that you would have the momentum, but it won't stop there as you would need to get to the other side regardless of what is it that is blocking your way. However, you are taking things further as you are being chased by cops. The objective of this game is to spray some paint over some things on the game. You would need to do that while you are being chased by cops. Of course, you do understand that they shouldn't catch you as that would be the end of the game.