I have only seen a maximum of 30 players online once. Most of which are people alone all by themselves in their own gold only server. Usually theres about 15 to 20 players online on average. Boy did this game screw up... However, the player counts might triple once XP users can play online. It may sky rocket to be like Halo PC if XP becomes officially supported via update by microsoft and the newer version is put up on the shelves at game stores that support xp.