Promotional tile given when reserving the base game. Rules: This Silk promo tile can be included in your games if all the players agree to that. Bear in mind that Silk must be played with a maximum of four improvement tiles, so you will have to leave aside one of the original ones in order to include any new ones. The first player to place three silkworms of his color on three pasture tiles of the same type (in other words: 9 silkworms on equally valued tiles) immediately receives 5 silk Points. Flip over the silkworm improvement marker.