the use of the technical features of the nintendo ds was one of the production team's principal concerns during development. the ds touch screen was a primary point of interest. several functions such as picking up items on the screen and moving them were originally intended to be incorporated into the game. however, scheduling problems forced the development team to abandon many of these ideas. igarashi's primary concern with using the touch screen was that it would detract from "the "castlevania" pure action gameplay", since the player would have to slow down play to use the stylus. the ds microphone was looked at during development, but igarashi noted that although he found humorous uses for it, it was never seriously considered for inclusion in the game.