Castlevania Circle of the Moon - GameBoy AdvanceHunt vampires in the dark corridors of the castle in Castlevania: Circle of the Moon for the GameBoy Advance. You are Nathan Graves, a vampire hunter who must rescue his mentor from the clutches of Dracula. This launch title for the GBA introduced the "Dual Set up System" (DSS), a unique magic mechanic where you combine Action and Attribute cards dropped by enemies to create over 80 different spell effects, such as flaming whips, ice storms, and