Inverted Pyramids

The three Great Pyramids of Giza suddenly appeared in mid-air, and they were upside down. No one knows why these pyramids appeared, but apparently, we could enter those inverted pyramids from its' tip. But, there are also rumors about the existence of some dark pyramids... In this game, players play cards into 3 pyramids in front of themselves in an inverted shape (The first layer with 1 card, second layer with 2 cards, third layer with 3 cards, and so on). Cards could only be played in ascending or descending order by layers for each pyramid, or players could discard into the dark pyramid. During the end of the game, players calculate their score according to their 3 pyramids completed layers with unique multiplying system, and then deduct their score according to their dark pyramid. The player with the higher score wins the game.