This app was mentioned in 2 comments, with an average of 11.50 upvotes
It's already released! but we are still adding more contents!
https://play.google.com/store/apps/details?id=com.oneaperture.helpzombies
https://itunes.apple.com/us/app/help!!-zombies/id1145901573?mt=8
There is one fun mobile game with Halloween theme Help!! Zombies: https://play.google.com/store/apps/details?id=com.oneaperture.helpzombies Why not give it a try?