Is co-op via internet gone from this game? I didn't even see a place I could invite someone?

Am I the last person who cares about this game, or is there someone still out there?

Hi, is this game removed from store? And why?

I need help starting this game,"All Zombies Must Die". It always crash whenever I start the game, please help.

Bought the bundle. Stops working on loading screen after displaying my kill count and exp earned. I did get passed the loading screen once out of the maybe 15 times I've played the first level so far. Tried changing different resolution settings and com...