I can smell butthurt already.
A good look at the Thread would even reveal a critical oversight by the OP.
Call it what you wish when it's true.
-snip-
No, it's open world so it would also classify as a RPG.
COD Zombies isn't a RPG...
You're so wrong about that last comment that I'm not going to even get into it with you, your Steam classifier doesn't mean stuff.
Uh, what made my Zombie mini game, and ZomB a rpg or rp?
It's uncreative and generic, basically "survive an infectious apocalypse, guys!" scenario.
But you are right, the zombie mini-game isn't, ZomB indefinitely is a RPG.