Arena mode refers to a specific type of gameplay or game feature where players compete in an enclosed space or area against each other to achieve victory or a high score. Full definition
Between the new arena mode and the additional competitive multiplayer content there's a lot to do here and it should keep you busy for some time. (wegotthiscovered.com)
There is a multiplayer arena mode available as well. (gamespace.com)
Fixed a crash that could happen when signing out while loading into the character select of arena mode. (playstationlifestyle.net)