From the 2012 PDF introduction:
Shotguns & Zombies is a zombie-apocalypse-themed pencil & paper role-playing game that pays homage to late night, low-budget community access cable television & B-movie cinema.
In it, players assume the roles of cliche survivor-types trapped in a world overrun by the living dead. In order to stay alive long enough to see the final credits, players must learn to work with one other to manage resources, overcome setbacks and fend off hordes of the flesh-eating undead!
So grab your popcorn, gas up your chainsaws and get ready for some direct-to-DVD, zombie-infested, horror/survival!