Castlevania: Aria of Sorrow is a 2003 action role-playing game developed and published by Konami. It is the third Castlevania game for the Game Boy Advance. Producer Koji Igarashi, who had led the production teams for previous Castlevania games, led Aria of Sorrow's development as well. Michiru Yamane returned to compose the music alongside Takashi Yoshida and Soshiro Hokkai. Director Junichi Murakami was new to the Castlevania series.

Castlevania: Harmony of Dissonance is a 2002 action role-playing game developed by Konami Computer Entertainment Tokyo and published by Konami for the Game Boy Advance. Part of Konami's Castlevania video game series, it is the second installment of the series on the Game Boy Advance. It was released in Japan in June 2002, in North America in September 2002, and in Europe in October 2002.