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The game itself gives 8 hours of free trial time (yes, it is subscriptioned based). the nice aspect of this game is its focus on MMO and space as a playing ground. You can do just about anything from trading and mining to hanging out in a bar or going to war in a guild. PvP is definitely doable here!
This game rates above some of the other MMO's for linux that I've seen. BO definitely seems to have far less of the problems I have seen elsewhere of late (hello! regnum!!!!).
Anyway, enjoy the game folks and don't let it die.