Left 4 Dead Mixes it Up With Romero’s Dawn of the Dead

Recently released ‘Left 4 Dead’ is getting a Half Life 2 mod, based on George Romero’s Dawn of the Dead mall back drop.

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I wonder if Romero will sue them, like he attempted to sue Sony over the “zombies in malls” concept. I think he truly believes he has this trademarked for all of eternity. Yes, you invented it for a movie, but it doesn’t make it copy-proof.