Malgré le titre Ace Attorney, le jeu ne comporte pas d'avocat de la défense comme le protagoniste, mais plutôt un caractère récurrent de la série, Le Procureur Miles Edgeworth.
Ace Attorney Investigations : Miles Edgeworth plays differently from the other games. The games in the Ace Attorney series are courtroom dramas, but Ace Attorney Investigations : Miles Edgeworth focuses on pointing and clicking around the area, moving Edgeworth around the crime scenes to find evidence.