That's not really based on the movie, it's just Sea Dogs 2 with a Pirates of the Caribbean themed translation into English.
I know. >:)
But it has the Black Pearl, Barbossa is the captain, and Keira Knightley has a line in the game (although brief and of questionable worth). Also, there are loads of props from the movies - the swords and skull, the cursed gold coins, said black ship and background... it's a cock tease and it can't be waived as unimportant, although it obviously can't be considered canon (unless Barbossa traveled a dimension or two and didn't explain this to Sparrow).