The interactions you have with an ex-girlfrend of ex-boyfriend after you have broken up with them. If amidst these interactions it looks like you are doing better than your ex after the break up then it can be said that you won the ex-games or a certain ex-games event.
Rob: Hey Dave, isnt that your ex, Katie eating alone over there?
Dave: Yeah, that's her. I walked by and talked to her a few minutes ago. She sounds miserable. I'm totally winning the ex-games.