A Call of Duty: Zombies "de-make" made in the 1996 Quake engine, in development since 2009. The game itself is feature-equivalent with Call of Duty: World at War on a generic level. Gameplay components are implemented with minor parity differences. Most World at War maps and their unique features are not yet represented. Various small additions and changes from Call of Duty: Black Ops are present as a means of gameplay smoothing, but not on a wide scale. NZ:P is, first and foremost, a Call of Duty: World at War remake.