Marathon Symbiosis Update Adds New PvE and PvP Modes, Weapons, and More

Bungie has revealed the details of Marathon's upcoming Symbiosis update, which will introduce several major gameplay changes to its multiplayer extraction shooter. Scheduled to launch on December 8, 2026, the update adds a permanent PvE mode, experimental PvP content, new weapons, an expanded environment and a dedicated social area.

The announcement marks another important step in Bungie's effort to expand Marathon beyond its original high-risk extraction gameplay. While PvPvE will remain an important part of the experience, Symbiosis will give players more ways to explore the world, complete challenges and compete without putting their entire loadout at risk.

Bungie has also confirmed an Open Play Week running from December 8 to December 15, allowing players to experience Marathon during the update's launch period.

Marathon Finally Gets a Dedicated PvE Mode

One of the biggest additions in Symbiosis is Expedition, the first phase of Marathon's new permanent PvE experience.

The mode is built around a three-run series in which players can participate alone or with a crew. Unlike the game's traditional extraction matches, Expedition removes threats from other players, allowing Runners to concentrate on environmental challenges and enemy encounters.

Players will also be able to use Flash Boosts to shape their builds during a run. These upgrades provide additional ways to customize a character's approach as challenges become more demanding.

The addition is significant because Marathon originally focused heavily on PvPvE extraction gameplay, where players must contend with both AI-controlled enemies and rival Runners. Expedition offers a different experience for those who prefer cooperative gameplay or want to explore Tau Ceti IV without constantly looking over their shoulders.

New 3v3 Team Deathmatch Mode Arrives in Beta

Symbiosis is not exclusively focused on PvE. Bungie is also introducing an experimental PvP mode called Deathmatch.

The new mode features short 3v3 Team Deathmatch matches in which two crews compete to earn points. Unlike traditional extraction missions, players will not risk their permanent loadouts when entering these matches.

This creates a more accessible way to practice combat, test weapons and compete against other players without committing to a full extraction run.

Bungie describes Deathmatch as a beta experience, meaning the studio will likely use player feedback and gameplay data to determine how the mode develops in future updates.

Limbo Introduces a New Social Space and Firing Range

Another major addition is Limbo, a dedicated social area where Runners can meet before heading into the battlefield.

Players will be able to interact with other Runners, test weapons and equipment at firing ranges, and challenge each other inside a duelling pit.

The new space is designed to give players somewhere to prepare and experiment outside active missions. It should also make the game more approachable for newcomers who want to understand weapons, equipment and combat mechanics before entering dangerous areas.

Limbo represents a shift toward a more connected multiplayer experience, giving Marathon a central meeting point rather than requiring players to jump directly into missions.

Perimeter Zone Receives a Major Overhaul

The Perimeter zone is also getting a substantial redesign as fungal growth and alien life transform its environment.

The updated area introduces two new locations: the underground Burrows and the submerged Reservoir. Both are intended to create additional exploration opportunities and new gameplay challenges.

Players will also encounter the Tick Queen, a powerful enemy lurking beneath the surface. The new creature adds another major threat to the area and gives experienced Runners a fresh challenge beyond existing encounters such as the Compiler.

The environmental changes should make Perimeter feel more distinct while introducing additional routes and areas for players to explore.

New Bishop Runner Shell Brings a Samurai-Inspired Playstyle

Symbiosis will add Bishop, a new Runner shell designed around speed, precision and powerful melee attacks.

Bungie describes Bishop as a fast, blade-wielding robotic hunter. The shell is intended for players who prefer aggressive combat and want to close the distance quickly before eliminating opponents.

Its arrival will expand the available Runner options and give players another approach to building their preferred playstyle.

Two New Weapons Join Marathon's Arsenal

The update will also introduce two new weapons.

V17 Flamethrower: This weapon specializes in close-range combat and area denial, making it useful for controlling tight spaces and preventing enemies from approaching.

Maverick Revolver: The Maverick introduces a new revolver archetype with a hand-cannon-style feel, offering players another option for powerful precision shots.

Both weapons are designed to expand combat variety and give players more choices when preparing their equipment for missions.

Marathon Open Play Week Begins December 8

Bungie is launching Open Play Week alongside Symbiosis on December 8. The event will run until December 15, giving players an opportunity to experience Marathon during the update's launch period.

Marathon is available on PlayStation 5, Xbox Series X|S and PC through Steam, with cross-play and cross-save support.

Players who team up with friends across supported platforms can also participate in Bungie's Crew Up promotion. Limited-time rewards will be available for eligible players who participate, with the promotion running through December 22.

Symbiosis Is an Important Step in Marathon's Future

The Symbiosis update is part of Bungie's broader plan to make Marathon more accessible and provide players with additional reasons to keep returning.

The studio previously acknowledged feedback about the game's progression, onboarding, content variety and long-term goals. Its September development update outlined plans to expand the experience with permanent PvE, improved social features and more ways to play.

Bungie has also discussed a larger March 2027 update that is expected to connect PvE, PvP and PvEvP experiences more closely. Other planned improvements include deeper progression, additional narrative content, new enemies and an entirely new zone.

For now, Symbiosis is the next major milestone. Its combination of cooperative PvE, competitive PvP, new equipment and expanded environments could make Marathon appealing to a wider audience, particularly players who want alternatives to traditional extraction matches.

The update launches December 8, 2026, and will be available to all Marathon players.