Zombie Zombie happened in 1984.
Not scientificaly. There is no proof that there are zombies, so a zombie apocalypse can't happen.
Zombie Wranglers happened in 360.
Fort Zombie happened in 2009.
Zombie Driver happened in 2009.
Zombie Massacre happened in 1998.
Zombie Tycoon happened in 2009.
Zombie ShootAR happened in 2010.
it cud happen soon
Burn Zombie Burn happened in 2009.
Atom Zombie Smasher happened in 2011.
Zombie Panic in Wonderland happened in 2010.
Zombie Smashers X happened in 2001.