The app recently was declared an Editor's Choice through Google in the category of zombie games. Recognition like this, and all the YouTube videos of players enjoying my work is what motivates me to continue.
Zombie Guard sits at a million downloads on Google Play. It is making its way back onto the Apple iOS app store (and most of my other apps). Building the app even through the Corona engine requires a modern Mac, so I'll be renting and connecting remotely to one through MacInCloud.com. To my surprise, Corona already is installed.