It is a good job I stopped developing mine as this looked quite similar to what I was designing last year, though I used a mix of MakeHuman and Sketchup to design mysurvivors and zombies, but I couldn't commit to the project and ultimately I put it to bed, I still have my survivors, zombies and pickup truck lying about in a box somewhere.
It is great to see something similar though and reaching the stage it has as this is how I envisaged my project becoming, maybe with a few more buildings so it was more like a cul-
de-sac or shopping mall so it was like walking dead/dawn of the dead style with warhammer
40k type rules simplified for a quicker gaming experience.
I wish you the very best of luck with this and I have really high hopes for it!