Board Thread:Weekly discussions/@comment-27053902-20171111055438/@comment-24024415-20171111165841

L4D2 actually does have a reference to Crazy Dave in The Passing's graffiti messages. I won't be linking the page here due to some of the graffiti having some colorful words so to say, but here's the quote:

"LOOKING FOR AN M60? COME SEE ME. CRAZY DAVE"

Seeing as it was one of the updates added post-launch, doesn't surprise me it took longer for VALVe to recognize PvZ after it gained some of its own steam. For the record: L4D-Nov 17, 2008; PvZ-May 7, 2009; L4D2-Nov 17, 2009.

Furthermore, I honestly believe that a majority of Jurrasic Marsh's music is at least partially influenced by L4D2's, especially with the intrumentation used and the similarities the Final Wave bares to the Safe Room song "The Monsters Without". Then agian. that's a stretch, but I just can't hear anything but similarities.