COD: World at War was definitely a 4/5 game, but I think many websites downplay how great Nazi Zombies mode had became. I've also always felt Nazi Zombies was far better than Left 4 Dead (CoD Engine vs Source Engine). Anyway, just got finished playing in solo mode and I screenshot'd the end.  Technically my best (on the Der Riese map) is Round 26 in solo mode, and Round 33 with 2 guys online (no cheats either mode).  
Any other NZ fans would like to post their high scores, feel free.
 
Equipment Used:
Gut Shot (Shotgun Pack-a-Punch Upgraded)
Spatz-447 + (STG-44 Pack-a-Punch Upgraded)
Bowie Knife
Monkey Bombs
Bouncing Bettys
 
Perks:
Juggernog
Double Tap Root Beer
Speed Cola
 

Left 4 Dead is better than Nazi Zombies.

" oorah "

" @TheFrostedGamer said:

" oorah "

I 'effing hate when people say 'oorah' "

" Left 4 Dead is better than Nazi Zombies. "

" @Jimi said:

" Left 4 Dead is better than Nazi Zombies. "

This. I try to respect everyone's opinion on this site, but the fact that the OP thinks Nazi Zombies is better than Left 4 Dead made me lol hard. "

" @TheFrostedGamer: Why does it matter that the Source Engine is old? World At War doesn't use a new engine either "

" @girdz said:

" @TheFrostedGamer said:

" oorah "

I 'effing hate when people say 'oorah' "

I'm always the host when I play online, so I'm always Tank Dempsey (the american soldier). He says oorah a bunch. But I agree, it's goofy. Once you're in the game, and feeling the context, it's whatever. It's kinda like in Left 4 Dead videos when you see people yelling "reloading" a lot. At first glance it's kinda goofy, but you start to think about covering each other's reloads and it makes sense. I dunno. "

" @TheFrostedGamer said:

" @girdz said:

" @TheFrostedGamer said:

" oorah "

I 'effing hate when people say 'oorah' "

I'm always the host when I play online, so I'm always Tank Dempsey (the american soldier). He says oorah a bunch. But I agree, it's goofy. Once you're in the game, and feeling the context, it's whatever. It's kinda like in Left 4 Dead videos when you see people yelling "reloading" a lot. At first glance it's kinda goofy, but you start to think about covering each other's reloads and it makes sense. I dunno. "

It mostly annoys me in movies and games, the macho-fist-bumpingness of it reallyyy gets on my nerves. Oh, and when people use it as a question, in Modern Warfare I think this happens. It's just a U.S. military thing but I very much dislike it. Sorry for the rant. "

with hit detection so bad you would have to play it a lot. 

step one: shoot the zombie
step two: wait 5 seconds
step 3: uhhhhhhhmmmm
step 4: the bullets don't hit anything try again and maybe step 4 will be the bullets hit the zombie
 
seriously i have been at point blank range in front of a zombie in COD: WAW and shot him twice clearly with a double barrel shotgun and nothing has happened.  
 
This one is rare but this is happened to me once when i was playing alone,
I shot a full magazine of a mp40 into a zombie with rapid fire on and it did nothing. it felt like the game couldnt handle the fire rate of the gun i used.
 
left 4 dead is much better in my opinion. there is no comparison.