Overview
- The Vault Breaker trial went live on Tuesday, July 21, 2026 and runs through August 4, 2026 as part of Marathon’s Mid‑Season 2 patch (1.1.5).
- Vault Breaker is a roguelite PvE mode on the Cryo Archive that supports solo, duo and trio play and uses run‑based progression where players strengthen Sponsored Kits between runs.
- Loot taken during runs does not transfer to Marathon’s normal extraction economy; extracted materials convert into an event currency called Vault Data that buys persistent kit upgrades or items from a rotating Armory.
- Shortly after launch, SteamDB‑reported concurrent players surged to about 14,800—roughly three times the game’s recent activity—giving Bungie an immediate measure of player interest.
- Bungie frames the two‑week mode as an experiment to collect telemetry and player feedback to refine PvE systems ahead of a broader Season 3 release, a roadmap decision happening while the studio continues to reorganize after layoffs and leadership departures.