Skull and bones is a pretty good game. The graphics are great, the ship combat is fun and it has a decent storyline.
However, it feels like there is a lot more to be added. Hopefully in future updates Ubisoft will add ground combat, the ability to walk around your ship and interact with more than just vendors, larger ships (currently only small and medium available), more opportunities to disembark your ship (currently only at a few ports) and more.
Skull and bones has serious potential to be the greatest pirate game in the world, but it just feels a bit incomplete.
Ps: The 2 and 1 star reviews are made by assassins creed lovers, who in my experience have very high standards. (Which is fair enough as assassins creed is an excellent game)