I remember a few years back, the idea of an apocalypse-based MMOFPS sounded like an awesome idea to try and create. though now, there are too many apocalypse-MMOFPS' and they all play out the exact same! games like DayZ, WarZ and Nether to name a few share massive similarities (though I am aware WarZ is a DayZ rip-off) but they are all PvE/PvP trust issue survival. most of the time playing these games myself make me wonder, "wow are there really NPC enemies that are trying to kill me too?". my point is that they are all following the same path. so the biggest idea of surviving an apocalypse is not to stick together and survive like a logical person, it's to kill the next poor bastard you see and hope he has something better