I find this game well worth the money. I would recommend getting a physical product as the cards are very well made. That being said, printing your own cards allows you to take them anywhere without worrying about them being damaged or lost. I have used this set to play at work and camping.
I would not recommend this for a primary rpg system and that is not what this system attempts to do, but I would recommend for a oneshot or something for a night of "beer and pretzels" fun in between your more serious games. It requires very little prep and the way the cards work allows for a lot of improv. When all is said and done, it can help you tell a great story. My one complaint is that it doesn't seem to have a website or anything any more. In summary, worth it for a secondary, fun, and easy to set up game.

I've played a little PACS here & there, bought everything up to this point... This expansion was initially supposed to include sea creatures as well as ships & pirates. I bought it without realizing they decided to split this naval-themed expansion into 2 supplements though. So what you have basically is just some captains, crew members, and some water vessels here. Not especially helpful without the beasties :/

Well, guess we'll have to wait 'til they put out the follow-up set which should include sea critters. Reading through their facebook page, they asked what aquatic monsters members would like to see included. Of the responses were: an alligator & gar combination, dragon turtle, giant seahorse (mount), hippocampus, kraken, mermaid, sea serpent, siren, and some kind of electric eel or similar beast as a familiar. ALL OF THOSE are great suggestions I'd welcome seeing for PACS in a heartbeat - and anything beyond that, actually (including giant crabs, sharks or stingrays)!!!

DISLIKED: No sea-based creatures that were originally supposed to be included LIKED: What is included is done very well - naval armor, pirate, scooner, skiff, etc.