Jolly Roger includes a wild symbol (the Jolly Roger), a scatter symbol (the parrot) and two bonus symbols (the chest and the map).
The wild symbol substitutes for any of the other reel symbols except the parrot, map and chest and is used to comprise winning combinations. A winning combination that includes a wild symbol pays double the normal prize. Two or more scatter symbols anywhere on the reels constitutes a win.
In Jolly Roger, three or more chest symbols on any active line triggers the Treasure Chest bonus round. Three or more map symbols on any active line triggers the Treasure Map bonus round.