Castlevania Doublepack is a compilation of the two previous Game Boy Advance Castlevania titles--Castevania: Harmony of Dissonance and Castlevania: Aria of Sorrow. The games are included in their complete form, giving players the ability to act as either Juste Belmont or Soma Cruz, depending on which story and game they wish to tackle. Both games feature a number of weapons and enemies as you make your way through the castle to combat Dracula in 2D combat.