Out of all the I SPY games, this feels the closest to the book. They have used the same models, sometimes even the same shots and many locations are the same.
There are two mysteries to solve in Smuggler's Cove, namely, to find two treasures hidden by two different pirates. The player has to play I SPY riddles (find hidden objects) in order to collect map pieces. As usual, all found objects move on the screen and a noise - in this case, piratey or sea shanty type of music - is heard. When the player has collected enough pieces, they can assemble the map to get another riddle which leads them to the treasure.