- 1). Insert "Call of Duty: World at War" into your PlayStation 3 and launch the game.
- 2). Select "Ok" to begin downloading the patch. You are prompted to download the patch as soon the game begins. Depending on the speed of your Internet connection, this patch can take anywhere from five to 30 minutes to download. Once the download is complete, the game restarts.
- 3). Select "Nazi Zombies" from the "World at War" main menu to play the game mode.
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