Which battle-control device does Color Splash use to sort, paint, and flick cards?

Paper Mario: Color Splash uses the Wii U GamePad to sort, paint, and flick battle cards.

The GamePad’s touchscreen is central to Color Splash’s combat system. Players select cards from their deck, arrange or sort their available moves, apply paint to strengthen cards, and then flick a chosen card upward from the touchscreen toward the television display. Timing button presses correctly can increase attack power or reduce damage from an enemy.

The cards represent the game’s distinctive battle system. Basic cards can produce attacks such as jumps and hammer strikes, while enemy cards can bring a defeated enemy onto Mario’s side. Thing Cards, based on recognizable real-world objects, deliver especially powerful attacks and can also help solve puzzles outside battle.

The Nintendo 3DS stylus is an easy choice to confuse with the correct answer because it also uses touchscreen input, but Color Splash is a Wii U title. Joy-Con controllers belong to the later Nintendo Switch, and the Wii Remote is associated with other Wii games rather than this card interface.