Only the Xbox 360 version is uncensored, causing Computer Entertainment Rating Organization ( CERO ) to label the game with its adult " Z " rating.
A " Trilogy Edition " was announced for Japan, where the Computer Entertainment Rating Organization ( CERO ) gave the game an adults-only Z rating after the previous two versions were considered suitable for players 17 and older.
"Case Zero " was released on August 31, 2010 in North America and Europe, then in Japan at a later date because the Computer Entertainment Rating Organization was concerned about the content and the download's rating.
Upon completion of development, " Colosseum " received a rating of " E " ( Everyone ) from the Entertainment Software Rating Board, " All Ages " from Computer Entertainment Rating Organization, and " 3 + " from Pan European Game Information.