Color Splash was released for the Wii U in 2016 and is the final Mario game and only game in the series to be released on the console. Mario and Peach get a letter from Prism Island, which turns out to be a color-drained Toad, and then set sail for Port Prisma, only to find it deserted, with many spots and objects drained of color. A large metal vault appears at the bottom of the dried-out fountain, which reveals Huey, the paint can character who guards the fountain. Huey asks Mario to assist him in recovering the Big Paint Stars, the main sources of color for the entire island, from Bowser and his Koopalings. While Mario is scouting the island, Peach is kidnapped by Bowser, who had tampered with the Color Fountain to create toxic black paint, which then transformed him into the more malevolent and meaner-spirited Black Bowser. After recovering the Paint Stars, Mario and Huey infiltrate Black Bowser's Castle, where they must halt his weapons factory's operations, defeat Bowser in battle, rescue Peach, and restore peace to the island.