Update : Navigation Controls Issues Resolved. Game doesn't lag now.
Zombie Apocalypse : Year 3013 A dawn of new year era has begun.
We are seeing Crime, Unemployment, Drugs, Abuse has reached new heights.
People are thirsty for the blood… Welcome to the New World… Welcome to Zombie Apocalypse
Zombies are fictional undead creatures typically depicted as mindless, reanimated corpses with a hunger for human flesh,
and particularly for human brains in some depictions.
The "zombie apocalypse" concept, in which the civilized world is brought low by a global zombie infestation, has become a staple of modern popular art.
By 3000 the influence of zombies in popular consciousness had reached far enough that the United States government's Center for Disease Control used the idea as a theme to promote disaster preparedness.
You are the Savior of the world... standup for a cause, for humanity.. destroy the zombies
-- Navigation Controls Issues Resolved