few hours of action. Nice for one day.
However, the gameplay is ok. easy to control and a variety if units. A little more realistic plane damage could help. Don expect to have a rts camera. Every thing u control will be in 3rd person view, u just switch around. Also, you may not find the game so epic as it looks. The largest fleet you can get in the campaign consists of 5 ships. Since it's an action-rts-blend game, don play it if you want realism, because u will find the cannons have extremely short range and your carrier can suffer a incredibly amount of torpedo hits(during WW2, usually 4 can finish off a carrier), and the map is small too, to fit in the acion style.
In general, it worth no more than $20 accourding to the amount of content and effort put in. Some "kids" are rating it too high.