A best guess, with room for doubt

Estimated MMO population ranking

Which tracked MMOs likely have the largest active player populations? This list makes a provisional comparison from recent Steam readings, community size, and limited direct publisher checks. The numbered order is our best guess; the range shows how much positions can move under other plausible assumptions.

These ranks do not mean that we know each game's daily player count. Steam covers one channel, Twitch counts viewers, and Reddit subscribers are community members.