Game File: 

abastard.zip

A variant of http://www.glorioustrainwrecks.com/node/2761 . But it's more fun than that.

For two players, the winner is the one who shoots the other person first.

Palette ripped from http://mareodomo.tumblr.com/post/18460467234/close-ups-of-my-pizza-poster-the-colors-really . Name suggested by Iain Gillespie.