This is a special colored core and bark set that can be used to add many variations to the game, it includes the golden core and four golden bark pieces. The suggested rules are posted here on BGG. This is GREAT for adding even more strategy to the game! You can put all of the GOLDEN BARK in one section or spread it out over the tree as you prefer. Each GOLDEN BARK is worth double points but beware of the Golden Core, it is twice as bad at -10 points! You do NOT want to hit the Golden Core off!