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Marathon's Symbiosis Update Brings Permanent PvE, 3v3 Deathmatch and a Free Week in December
Marathon: Symbiosis launches December 8, 2026, introducing the first phase of a permanent PvE mode, an experimental 3v3 Deathmatch, new locations and a blade-wielding Runner shell. Bungie will also open the entire game to newcomers for a week, from December 8 through December 15.