sentences:  In March 2009, it was reported that Sony was seeking opinions about a collector's edition from PlayStation 3 owners.In October, an "Ultimate Edition" was unveiled for North America, and an "Ultimate Trilogy Edition" was announced soon afterwards for a limited European, Australian, and New Zealand release.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.