Things You'll Need
Instructions
Power on your Playstation 3 console. If your settings dictate that the game disc starts automatically, the game may launch immediately. If this is the case, press the "PS" button on your controller and select "Quit Game" from the menu, returning you to the XMB menu screen.
Scroll all the way to the right on the XMB menu to "Playstation Network" and select "Playstation Store" from the sub menu. If you don't log in automatically, you will be prompted to enter your Playstation Network ID and password.
Select "All Games" from the Playstation Store main menu, then "PS3 Add-Ons" from the sub menu. Scroll down to the "J-L" section of the alphabet to find "Little Big Planet" Content.
Select "Costumes" from the "Little Big Planet" content list and scroll to the very bottom of the list. Select "Zombie Costume (Game Pack)" from the list. From the content information window, select "Buy Now," followed by "Download."
Allow the content to finish downloading and leave the store, returning to the main XMB window. Launch "Little Big Planet" just as you normally would, either by clicking the icon in the XMB or by inserting the disc.
Move away from the controls in your pod until the "Use Pod Computer" message stops displaying. Press the "Square" button on your controller to open the Pop-It menu. Select "Customize Character" from the list.
Select either "Zombie Boy" or "Zombie Girl" on the first page of the "Materials" section to turn your Sackboy into a Zombie. Other clothes and accessories can then be added from the list as desired.