The trilogy follows the story of Phoenix Wright, a defence attorney who must investigate and defend his clients in court. Along the way, he uncovers conspiracies and faces off against rival lawyers to prove his clients' innocence.
Gameplay is largely focused on investigation and trial phases. In the investigation phase, players gather clues by questioning witnesses and examining evidence. The trial phase requires players to build a case and present it in court, using the gathered evidence to defend their client's innocence.