Armored Core: Nine Breaker is a 2004 third-person shooter mecha video game developed by FromSoftware for the PlayStation 2. It is the ninth entry in the Armored Core series and a spin-off to Armored Core: Nexus. Nine Breaker removed story missions and placed much more focus on the Arena mode found in previous games. Training missions reveal that an organization has put the Arena mode together in order to train pilots for a potential future war as currently all corporations are at peace.