How Do We Win?

Last week I compared life to a video game. A video game where the number of players continues to increase, meaning that our collective knowledge of how best to play the game should also be increasing, except that at the same time the version of game we're playing is also changing. As an aside I also mentioned that it's becoming harder to know if we're winning. This week I'd like to take that thought and expand upon it. What does it mean to be winning the video game? Or, to go a step further why are we even playing the game?