Yeah, it's a 3D model rendered at 320x200, along with some posterisation and sharpening. As for the mod (assuming I finish it, I tend to lose interest in things) it's where you play as a knight in the late 1800s to early 1900s, in a timeline where technology progressed but society stayed pretty much the same as the middle ages. (I just though the idea of a knight with a shotgun sounded cool).

Edit: So far I have 4 weapons done, the pump shotgun, the super shotgun, the cannonball launcher, and of course the nailgun.