Zombie shooter

Create me a game where i have a gun and the cross is where my gun is pointing. There is a zombie apocalypse and I cant move but i can move my gun by swiping it. Zombies will pope out from the mist, make sire they look scary and creepy with green skin and torned out clothes and i have to shoot as many as i can while more pass by and my view is the zombies and my gun and even when the zombies pass me, nothing happens it is just how many can i shoot before the 20 second timer ends.

Created by Unknown67