I have played the Pirates expansion and this one, and I must admit that I am a bit dissapointed.
There are a lot of bugs that I noticed while playing this:
a) The Life Bar depletes automatically, without taking any damage, for example: I travel from Devil´s Jaw to The Village, and the Life Bar is empty.
b) Along with the Life Bar, the Eye, that shows the quantity of blood remaining for a litre, does not fill.
c) In all the "Feed Us" saga, the "victims" move to areas where is impossible for the player to reach: the victim swims to the rocks, transpasses them, and swim out of the screen.
d) The Piranha jups without control sometimes.
e) Some victims, though complete and ready to be eaten, can´t be because when you place the cursor over them, the red target doesn´t show up, and they remain floating.
Aside from this issues, this new installments of Feed Us, Lost Island and Pirates Expansion, are best in when it comes to graphics (better detailed), the lag has been reduce up to a point in which is almost unnoticeable, and that the design and colour of the Piranha is way better than in the previous games.
One more thing, an option for turning off the music would be welcomed, at least for me, it gets annoying from time to time.