Comments of chapter undefined of The Game of Evolution

I am curious about something, what is the fate of most candidate races? I ask because we know that when a race wins the game they get a 10 year grace period before anything happens to them but what usually happens when the time is up because I imagine that in 9/10 causes they get conquered by the closest civilization to them? Does every other civilization know where the races planet is or is there planet hidden in a area of space that is less populated?

Interesting character