So is Blizzard and WoW also NCsoft corporation or as they're better known Arenanet creators of Guild Wars also Mythic with Warhammer Online Age of Reckoning...Not to mention going in to Eve 2 and a good many other "pro" mmo developers. Your criteria leave no games really and even you cannot fulfill your own criteria the only difference in any of those I mention above is GW costs about £15 to play since you buy it once not pay for a subscription fee