In the past there have been incomplete collections for different reasons or circumstances. No absences are expected considering that it is a collection but this detail we will not be able to know until it is formally announced. We are talking about a collection that will presumably include the celebrated three Game Boy Advance installments: Castlevania: Circle of the Moon (2001), Castlevania: Harmony of Dissonance (2002) and Castlevania: Aria of Sorrow (2003). Why was Castlevania: Aria of Sorrow released on the Game Boy Advance?.