Halo Infinite's surprise launch of multiplayer last night led to over a quarter of a million concurrent players on Steam.
343's free-to-download MP saw a peak concurrent players figure of 272,586 on Valve's platform.
That makes Halo Infinite the most successful Xbox Game Studios title of all time on Steam, beating the likes of Forza Horizon 5, Age of Empires 4 and Xbox Game Studios' previous biggest game on Steam, Halo The Master Chief Collection.
