The current player plays 1 or 2 cards from their hand and/or the alta-hand to match 1 of the faceup cards in the pyramid.
• same color • same number
• numbers that add up to the number shown on a faceup pyramid card (any colors)
• numbers that subtract to match the number shown on a faceup pyramid card (any colors)
• primary colors that mix to create the secondary color shown on a faceup pyramid card (any numbers)
Color mixing is additive only (yellow + blue = green)
NOT subtractive (green - yellow ≠ blue)