Lived in Pittsburgh all of my life and though I am sick of the recent influx of films being made in Pittsburgh; its nice to see a video game getting the treatment.
Strangely enough though, back in 2009 I started creating a very similar 'I am Legend' game based using the CryEngine2. I took nearly 3000+ photos of downtown and rural Pittsburgh for textures and even begun rendering Pittsburgh. The project fell flat when I realized I didn't know how to make games, so it never got off the ground.
Anyway, anyone else from Pittsburgh?