Arc System Works Co., Ltd. (アークシステムワークス株式会社, Āku Shisutemu Wākusu kabushiki gaisha), commonly referred to as ArcSys, is a video game developer and publisher located in Yokohama, Japan. They are well known for their fighting game franchises, like BlazBlue and Guilty Gear.
They helped publish the console release of Arcana Heart 3, as well as later revisions.
Arc System Works has also worked on other games and franchises, like the Persona 4 Arena series, the Under Night In-Birth series, the River City Girls series, Dragon Ball FighterZ, Granblue Fantasy Versus, DNF Duel and RWBY: Arrowfell. They are currently working on DLC for Guilty Gear -Strive-.