Reports say Castlevania: Harmony of Despair is a “Metroidvania” style adventure for Xbox Live Arcade that has six player co-op. Characters come from a variety of Castlevania games such as Symphony of the Night and the Nintendo DS games Dawn of Sorrow and Order of Ecclesia.

That’s the rumor and it’s looking more likely since the OFLC just rated Castlevania: Harmony of Despair. While the rating doesn’t tell us anything about the game, it pegs the system — “X-box”. We’ll take that as Xbox 360 since Xbox games haven’t been made since Madden ‘09. The rating also says “gaming experience may change online” indicating some kind of online play.

Six player co-op, perhaps?