88,337 peak. Bungie's Marathon plan is years long.
Marathon launched in March 2026, hit 88,337 concurrent Steam players at peak, then dropped to the low teens of thousands within weeks. Creative director Julia Nardin is selling a multi-year narrative plan on Tau Ceti IV as the long-term hook. Roughly 2.2 million players showed up in the first month, but the concurrent count is already fading.










