Played the demo last night. The game's an interesting concept, certainly, but I just can't see it as something I'd drop $50 on. Maybe $25. The impression I got from the demo is that it's just wave after wave after wave of randomly spawned zombie hordes while you make your way through very linear levels. It would be worth it if it were an open world kind of game with an entire, complete city to wander through, but not with the level structure it currently uses.
The Co-op gameplay design is certainly there -- the limited medkits and the choice of who to use them on, divvying up weapons and special items -- but the basic premise of the game won't be engaging past a week or two. Of the two levels available in the SP version of it (Co-op is just SP with more players instead of NPCs), the only difference between the two levels were some textures, and that was disappointing. Definite kudos on the different zombie types, but the level design really makes or breaks this style of game.
