What Inspired the Nazi Zombie Mode in 'Call of Duty: World at War'

MTV Multiplayer writes:

"If you've beaten "Call of Duty: World at War"'s main campaign, then you've unlocked the the Nazi zombie mode.

The special mode allows four-player co-op and has gamers battling throngs of Nazi undead that become increasingly difficult with each wave.

Activision executive producer Daniel Suarez shared with Stephen Totilo what inspired the team to make the mode in the first place."