As simple as the game is, it is still very engrossing. A refreshing break from all the FPS (like Dust 514 and COD as of late) yet its a cool shooter. And of course, you gotta love it for the zombie factor. I also enjoyed the addition of survivors and barricades. It caught my attention and I just kept playing on and actually had fun. Thank you for the increased ammo, damage, and lower weapon prices too. Good job! ^_^
p.s. I hope there's a sequel - same concept, maybe with just added cool stuff, or better yet -surprizes as the game progresses.