Adding some new challenges.
Save GrandPa - Zombie Shooter
GrandPa stuck in Zombies world you have to save your GrandPa from zombies.
Kill zombies and save him.
For killing zombies Tap to shoot them.
Simple controls.
Nice graphics.
Full action packed.
Horror world. (Endless)
Scary sound effect.
An Addictive hyper casual game.
A Perfect zombie shooter game.
Best of Luck.