This is a doomsday sandbox game, the only objective is to survive.
'Zombie Crisis: Survival' is a survival sandbox game. The only objective of player is to survive. The world is facing environmental crisis and zombie infection. You have to destroy zombies and keep discovering in the severe environment to become a winner, and to find out what really is behind the event.
In 'Zombie Crisis: Survival' Single Player mode, you will need to adventure the doomsday alone, to save your family. As the adventure goes further, you will find out the reason that the world is destroyed. You will fight the environment and Zombies every day. Try to live longer, kill Zombies that threats you, save your family, and figure out the reason for the doomsday are your objectives. Meanwhile you will make decisions, that challenges your human nature. All results could be out of your thought, but causes by your choice.