Don't know of such a game but I saw an eppisode of Closing the Distance (on the OutDoor Network) that focused on shot placement for about the entire 30 min. Maybe it is available on DVD or video tape? It was a very well done program and I have wished I recorded it for a refresher and training tool.
Not a game but a cool aid
http://home.mn.rr.com/deerfever/Anatomy.html
Found the DVD for 20 bucks and order one.
http://whitetailproducts.com/details...8&cat=1&path=1