Bungie will add a permanent PvE mode, Team Deathmatch and a connected survival system to Marathon over the next six months, per the Future of Marathon roadmap published on its site, walking the extraction shooter back from the formula it launched with in March 2026.

The Symbiosis update lands on 8 December 2026 with Marathon’s first permanent PvE mode, a space Bungie says will let Runners “explore, experiment, and take on challenges without worrying about being hunted by other Runners”. Team Deathmatch, an expanded Perimeter map and a new melee-focused Shell, Bishop, arrive in the same update, and a Nightfall refresh comes a couple of months earlier in October.

By Bungie’s own admission the game was too challenging and limited for a broad audience at launch, and the studio says Marathon is moving on from its cutthroat, winner-takes-all launch loop toward something that can hold both casual and hardcore Runners.

“PvEvP will remain an important part of Marathon, but it will become one point in a connected set of survival experiences,” Bungie said in the blog post.

Game director Del Chafe III and creative director Julia Nardin said the goal is for Marathon to serve the full spread of players, from someone who wants a quick, low-pressure run after work to high-stakes competitors, because “Marathon needs to support all of them”.

For a studio whose loot-and-risk loop shaped the genre, adding a mode with no other players in it at all is a concession that extraction’s ceiling is narrow. PvEvP remains in the game, but it stops being the game.

A larger evolution follows in March 2027: an interconnected system of permanent PvE, PvP and PvEvP experiences, solo and crew options, a new zone, new enemies, a refactored Cradle and reworked onboarding, with a new social space and firing range already confirmed for Symbiosis. Bungie says it will keep evolving the game throughout and beyond 2027.

No pricing or monetisation details for Symbiosis have been announced, and Bungie has promised more on the update in the coming months.