Australia is often mocked for its Puritanical views, regarding what and how games are portrayed and sold within its kangaroo-lined borders. Blood must be changed to green, bodies disappear quickly, and all that.
At least in 2009, it was the case that games required a rating in order to be sold there; but there was no “Mature” rating, a R18+ for example, which meant violent games couldn’t get a rating and therefore be sold at all. Fallout 3, Left 4 Dead, Aliens vs. Predator were all victims of this idiotic view.