I voted yes, but with the reservation that even though they've been over saturating things, they have done so somehow without ever really having a high point. Literature had World War Z and the Walking Dead, I suppose, but they were rare bright spots. In film and in gaming in particular, the offerings have been really underwhelming. It's weird that so much could be made so often about a single topic and yet almost none of it worthwhile. There was never a solid, definitive zombie game. They're all just same-y action games and the zombies could be easily swapped out with any other melee-based enemy. Romero's once lauded return on the cinematic side of things ended up being such appalling and embarrassing substandard fare that I suspect most people don't even realize he actually made three new Dead movies. The best zombie movie made in this whole stretch was Shaun of the Dead, which is telling.