Game from the inside covers of the 1964 Boy's Own Paper Annual.
The rules:
FOLLOW THE TRAIL AND FIND THE PIRATE'S TREASURE!
Here's an exciting game that calls for some skill and judgement. Up to 13 players can take part. All you need is a small, coloured counter for each player and one die. Players throw the die in turn and move their counter according to the table below.
First throw a 6 and then start from any square at the west end of the map. STOP if you come up against a natural obstruction (such as a volcano or swamp), or the edge of the map, or a square occupied by an opponent’s counter, and lose the remainder of that move.
If you throw:
1 - Move one square in any direction and have another throw.
2 - Rest on your present square until the next throw.
3 - Bonus. Move three squares in any direction — including a combination of forward and sideways.
4 - Move four squares South.
5 - Move five squares North.
6 - Move six squares East.
The winner will be the first player to reach the treasure island on the right hand side of the board.