Check out Zombie A-Pew-calypse.
Zombie A-PEW-calypse is a VR experience for Android (no cardboard required). (Earphones ENCOURAGED).
In the middle of a spooky forest, immobilized due your injuries, with a truckload of ammo, a flashlight, and a gun, you will throw your last stand against the Zombies hordes, shooting them down.
Pew! Pew!
The gun is shot by using your voice to make shooting noises.
https://play.google.com/store/apps/details?id=com.WolfgangGames.ZAPEWcalipse