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It's made with the Hero Engine, the same engine used to make TOR.
These are indie devs. I'm not saying they didn't have any money, but I am saying they didnt' have Bioware money to make the game.
It's a F2P game, so if it looks interesting you can download it and play. Still in beta, so might have some bugs.
So how does a PvP game work with an item mall?
Well, at teh end of the video the developer says, you can buy anything in the game. But, you can also earn all that stuff without money.
So, all gear, all items, potions, etc., can be either purchased or you can grind for them, up to you.
Is that the way all F2P games work? Anyway, that's the way they are doing it.