POTC...
Pretty
pretty linear
While its a fun game... you have errm 7 islands to explore and a vast archipeligo you can traverse in less than 10 minutes.
Its open-ended in the sense that you can wander wherever you like and do the same things over and over again... Once you have yourself a Frigate there is nothing on the water that can stop you.. so no challenge left either..
Gfx are awesome, and there are some mods coming. Hopefully it will turn into the Sea Dogs 2 many hoped for.
There is no demo, though the game is cheaper than most PC games
IMO its worth it
SKurj