It was confirmed by Australian Minister for Censorship that online games such as Second Life is banned in the country. There was confirmation from Censorship Minister Stephen "Goebbels" Conroy and according to his spokesperson it was added "under the filtering plan, it will be extended to downloadable games, flash-based web games and sites which sell physical copies of games that do not meet the MA15+ standard." The MA15+ means restricted to those people ages 15 and above.
The Australian rating is different because it doesn't have R 18+ or rating for computer games. All games for adult are place in RC or Refused classification..