Countdown to Drop Down is a course in Super Mario Bros. Wonder's Fluff-Puff Peaks, and it features two Wonder Seeds and three Purple Flower Coins. To secure the green checkmark for this level, players must reach the top of the flagpole at the end. This guide provides the detailed procedure for achieving the green checkmark and also reveals the locations of all the Wonder Seeds and Purple Flower Coins in Super Mario Bros. Wonder's Countdown to Drop Down.