On your journey across the seven seas you will need to complete a bunch of tests. Only the best make it to the top. In the pirate tests you have to win battles against dangerous sea monsters and other pirates on the high seas. The quests help you to collect valuable experience as a pirate captain. With this experience, the pirate test will be child's play for you–but without any experience you'll perish miserably.
Whoever passes the pirate test after completing all quests on one particular level will proceed to the next level–and can explore the Seafight seas on other charts.
Good luck!
