Possibly. The POD for ZSG and WWZ is vague. It mentions that zombie movies or media were made at some point but it is heavily implied it is not as famous as OTL. Meaning, either Night of the Living Dead flopped in theaters which was replaced by a slasher movie craze in the 1980s, or that zombie games like Resident Evil and The House of the Dead wasn't well received so therefore no zombie media in the 21st century.Zombie video games been still around like House of the Dead i think so.