Looks pretty good! It's called Caribbean. If you know the Mount and Blade series, then mixing that with pirateering is going to be amazing. The early access gameplay looks pretty damn promising. I am a HUGE fanboy of M&B Warband, so I am really stoked for this.
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store.steampowered.com]
Here is an early access walkthrough on youtube showcasing some features of the game.
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www.youtube.com]