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Are there any sandbox MMORPGs, past or present, that were financially successful? I don't care about how fun or interesting they were to play. I'm just trying to guage how many there are or were. Also, this is not a bait thread. I don't have a "zinger" waiting or anything like that.
I'm just looking for a credible list of sandbox MMORPG games (past or present) with a proven record of financial success.