I have put about 15-20 hours into the Playstation 4 version of Black Flag, and the game is amazing. The graphics are beautiful and frame rate is nice.
There are simply a ton of things to in this game. Lots of upgrades to buy and craft for your Edward as well as your ship. A lot of islands and underwater locations to explore, as well as side activities like hunting, whaling, gambling and more.
Naval combat is a blast. There's nothing like taking on a powerful Royal Convoy and earning a nice fat reward when you come out on top.
This is great game, and I have spent probably 50 hours playing it. I love the sea battles, even though the controls are a bit wonky. It is hard to see where your shots will go, especially once you get in close, especially your very important mortar shots.
On foot, the controls also need help, as he seems to do stuff randomly. Very beautiful game.
Now, for the many, many issues: The U-play passport/server problem is huge! The UBI servers haven't worked properly since launch, so about every 90 seconds you will receive an on-screen notice telling you that you can not connect, which always creates a brief freeze, and sometimes causes a long freeze, even causing you to reload once in a while. This is literally every 2 minutes! Aside from the freezing, you will see a lot of texture pop-ins, get stuck on a rock or twig and be unable to move. The worst glitches by far happen during combat.
The camera is a total nuisance, changing itself to a view where you can't see your enemies, which is important, especially when you are being attacked. Several times I have died during boarding because the game glitched out and I was attacked by enemies not even near me, or they stab me through a building or other permanent object. My all-time favorite was when I was attempting to use the pulley to kill the scouts, and was attacked and knocked off the mast before I even arrived.
The worst example was using the pulley and I flew over the ship up into the air and then fell about 50 meters to my death.
Yes, I am playing this on my brand-new PS4. I even replaced the game thinking that would help. UBI should really be ashamed about the wonky camera, controls, server issues and glitches.
As I said, great game, if you can tolerate the glitches!