Pirates: Duels on the High Seas is an adventure game for Nintendo DS. It was developed by Oxygen Studios and published by Oxygen Games. The game is a sequel to the similar WiiWare title Pirates: The Key of Dreams. An old man in a pub presents you with a riddle; after solving this riddle you discover that possession of seven magical keys will provide you control over the seas. After collecting the first Key from Port Royal you find a scrap of paper which informs you that unless you obtain the other six keys in six days' time you will perish.