Originally titled Zombie Massacre, the movie was repackaged as 'Apocalypse Z' to capitalize on the success of World War Z (2013).
This movie bears a very close resemblance to "Maplewoods" (2003) aka "Operation: Nazi Zombies". It's fairly obvious the filmmakers were inspired by that movie.
The movie was based on an unreleased game for the Wii.
Ivy Corbin's debut.