Prior to the introduction of the R18+ rating, Australia would either cut or refuse classification for extremely violent or otherwise offensive games. With the rating in place, the first game to receive the honor of R18+ is none other than Ninja Gaiden: Razor's Edge on Wii U.
Chill out, Ryu, he just asked for the time, jeez.
It's kind of funny that the first game to be slapped with the rating happens to be on a Nintendo console, but it's nice to see the classification going into effect. According to Lesley O'Brien, director of the classification board, the R18+ rating was given for "violence that is high in impact because of its frequency, high definition graphics, and emphasis on blood effects.