12 special cards in the Pop Pile change the game by making players draw more cards! Number Pop Cards build up until a Pop+1 or Pop+2 Card makes players draw the total from the Draw Pile. Special Action Cards like Flip 2, Discard All, Wild Discard All, Wild Flip 4 and Wild All Flip ramp up the action and raise the stakes. The Instant UNO Card allows players discard down to a single card, shifting momentum in an instant.