Survive by improving your base and defending it from the attacks of the creatures ZOMBIES
Manage your needs and discover the end of all time, YOUR DEATH
Quench your hunger, thirst, fear, sleep, etc, and explore collecting supplies to pass the apocalypse as best you can. SURVIVE
Destroy your enemies while you fight against the cold for your survival.
COLD, FEAR, DREAM, HUNGER, THIRST ...