Chaos Theory
Around L.A, the survivors of the first seismic activity were in a disorderly form as they congregated around the evacuation pods. Everyone was trying to get out.
What they have seen, was enough to drive some of them insane.
Having survived a night of terror, these people were already at their ends wits. Then again when they started robbing and torching everything to the ground, some were unlucky enough and got murdered... that is, unintentional...
But those that survived everything tossed on their way... they considered themselves as the alphas. They were so full of themselves that they started cursing and engaging in immoral actions.
They didn't care even when there were underage youngsters in their vicinity... they did as they pleased. And in no time, the situation turned similar to that of GoT. Their pleasure receptors weren't still overloaded and as such, they went for the high stuff... live games.