Marathon opens to everyone from December 8 through December 15 alongside Symbiosis. The update introduces Expedition, a permanent PvE mode whose first phase is a series of three runs. Bungie’s Open Play Week guide says trial players who buy the game afterward keep the items and progression they unlocked.
How Expedition changes a run
Expedition can be played solo or with a crew. There are no rival player squads in this mode. Instead, players face combat and environmental encounters and use Flash Boosts to shape a build during a run. The updated Perimeter includes the underground Burrows and the flooded Reservoir, according to Bungie’s Symbiosis preview on PlayStation Blog.
Players looking for direct competition get a separate Deathmatch beta. Its three-on-three matches let crews compete for points without putting permanent loadouts at risk.
When free access ends
Open Play Week includes the full game, so a new player can also try Extraction. The Crew Up event runs longer, through December 22. Access after the free week requires a game license. For audience context, ActivePlayer’s Marathon statistics cover the game as a whole, without a separate Expedition population.
PlayStation’s Marathon: Symbiosis gameplay trailer.
Featured image credit: Bungie and PlayStation, Symbiosis announcement.








