Marathon's Vault Breaker PvE roguelite mode launches July 21 — but only sticks around for two weeks

Bungie is adding a PvE roguelite mode called Vault Breaker to Marathon on July 21 as part of the game's mid-season update, but there's a catch: it's only available until August 4. A full rollout is planned for Season 3, which kicks off September 22 — though Bungie hasn't confirmed that's the exact date Vault Breaker returns permanently.

Vault Breaker is set inside Cryo Archive and works very differently from standard Marathon. Players enter with unique Sponsored Kits rather than their own loadouts, and nothing they loot carries over — all gear stays behind. Progression runs through a new currency called Vault Data, split into two tiers. Tier One Vault Data is found in vaults and must be exfilled to count, but is also awarded for killing a UESC Commander even if you fail to extract. Tier Two is harder — you only earn it by solving consecutive vaults on the same run and then successfully extracting. Bungie flagged that solo players will find Tier Two especially tough, though the mode supports duos and trios. Vault Data can be spent on weekly rotating items, a daily deluxe weapon, and Prestige weapons, but those purchases are for standard Marathon modes only — Vault Breaker itself runs exclusively on Sponsored Kits. The kit starts weak, with one standard weapon and minimal gear, and upgrades branch out as you earn Vault Data: weapon quality, survivability, or a broader implant and core mix.

Marathon launched as a PvP extraction shooter and has struggled to build a sustained player base — it's underperformed on Steam and barely registered on PS5. Bungie is in a precarious position: Destiny 2 has wound down, the studio has faced significant layoffs, and Marathon is its primary bet right now. Vault Breaker is a direct attempt to pull in players who like the game's aesthetic and world but bounce off the extraction format. An earlier experimental mode, Sponsored Survival — a PvP-lite queue that ran for one week in June — was well-received enough that some at PC Gamer argued it should become a permanent fixture.

The two-week window for Vault Breaker has raised eyebrows. The limited run is clearly Bungie testing the waters before committing to a full Season 3 rollout, but pulling a well-received mode for six-plus weeks is a risky move when the game is already fighting for players. Whether Vault Breaker lands well enough to accelerate its permanent return — or even prompt Bungie to keep it live — is the question the community will be watching closely come July 21.