The Last Hostage Left

First the player needs to find some items (Weapons, Health, GPS..) so he can survive.
The player also needs to find the keys that allow him to open the closed the doors where the hostages are hiding (every type of door has its own key).
After finding a hostage the player must tell the hostage to follow him to the police car, Then the hostage will be safe.
About The Zombies:
The zombies will run after the player once they see him.
The Zombie will also run after the hostages once they see them.
If the player and the hostages get surrounded by the zombies, Some of them will attack the player and the others will attack the hostages.

Features:
Procedural map generation (Unlimited number of maps).
Skins.
Upgrade system for weapons.

About The Hostages:
The hostages have 2 states:
State 1: Hiding or not following the player.
State 2: Following the player.
The player can control the state of a hostage, The player needs to take the hostage to the police car.
The player can take more than one hostage at the same time, but it's a little bit risky.
The player loses only when he dies or all the hostages die.

Enjoy.