Elite: Dangerous
I know, I know! This isn't really a pirate game, but Elite: Dangerous can be if you want it to be. Frontier Developments have created a bloody huge galaxy for you to explore and make money, which is basically the goal of the game: make money, buy ship upgrades, make more money, buy a better ship, make even more money, and so on and so forth. What's interesting about Elite: Dangerous, though, is that you can do the usual trading, exploring, and bounties for credits while also preying on other players, taking their hard-earned loot for yourself.
Published Aug. 11th 2017