Castaway Bay is one of the six main boards in Mario Party 6. It has a tropical theme.
The main gimmick of this board is the rotating ships at the end of the board. Getting Bowser's Battle Yacht will cost the player a Star (or 20 coins) while getting DK's Boat allows the player to get a Star for 20 coins. The boats switch position everytime a player reaches them, the time of day changes or if certain Green Spaces are landed on.