I have an idea that is like the combination of both.<br/><br/>In 1950, a virus leaked from a bio-weapons lab and spread into the public, rendering them into mindless flesh eating zombies.  Society breaks down as the number of zombies soon outnumber the living.  Now the remaining humans do what they could to survive against zombies, bandits, and the elements.<br/><br/>However, the rich and high class survive the apocalypse and rise up as the new leaders of the world.  They are protected by what remains of the world's militaries and by thick walls of steel and electricity.  They are the New Society, the leaders who will bring a new order to the world and these great leaders need entertainment.<br/><br/>Roaming bands are sent out to collect living survivors and bring them to a fortress like facility where they are cleaned and treated for any illness or injury.  They are inspected and chosen by New Society members and taken to the Games which is located on the island of Hawaii where the selected.  Each person belongs to a specific sponsor who selected them, the goal is simple, survival.<br/><br/>They must survive 5 days against zombies and monsters bred from the New Society's labs.  Each day they survive they are taken and washed up to be screwed and abused by their New Society sponsor and then sent out the next day with fewer supplies, weaker weapons against more fiercer monsters.<br/><br/>The monster bred are not zombies, they are genetic hybrids that either want to eat meat or breed.  And the human players can fulfill either role.<br/><br/>By the end of the five days, if they survive and appease their sponsor each night, they are elevated to being servants for their sponsor where they will live in a safe environment of the steel cities and no longer have to fear zombies, starvation, or the elements.<br/><br/><br/>That's something that I spun off the top of my head.