
Armored Core: Master of Arena is a standalone follow-up launched for the PlayStation in 1999. It focuses on a vast, organized Arena system where players advance by overcoming ranked opponents. The game enhances mecha customization with additional components and more precise tuning options. The narrative is limited, primarily conveyed through brief mission explanations and arena settings. The focus on competitive advancement helped establish the Arena as a fundamental element of the Armored Core franchise.
In the shadows of Isaac City, two powerful corporations wage a brutal struggle for dominance over the population. Amid one of their fiercest clashes, countless innocent lives are lost in the ensuing carnage. One of the few who survives is a young man who has lost his entire family. Months later, consumed by grief and anger, he resolves to seek vengeance—his target is the pilot of an AC. Known only as "Hustler One," this pilot controls the very machine that was central to the day’s horrific events. To uncover the truth and get closer to his enemy, the vengeful young man joins the Ravens' Nest. And with that, a new Raven takes his place among the ranks…
| PS1 | February 4, 1999 |
| PSP | November 28, 2007 |
| PS3 | November 28, 2007 |

