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So I'm curious what MMO's are you playing atm that you notice a month to month population increase in? Whether it's through more people in citiies, more players to group with, or what have you. Since most companies don't release any kind of player retention metrics, these are the only notable things by which to measure this sort of thing.
We hear enough about what MMO's are bleeding players, so lets flip the table and go positive. What MMO's are retaining their players?