A card-driven game of colonization in the West Indies, players in Island Siege build forts using stones from their supply, then move colonists to populate it. Colonists in turn construct buildings and ships, which then house the colonists and provide players with special abilities, while ships are sent to lay siege to the opponent's forts. But, be careful! Whenever a fort is destroyed by an opponent's fleet all of its colonists and the buildings behind the fort are removed from play! Winning requires a keen balance of building and laying an Island Siege!