Here's why:
* It's a physical card game: Yu-Gi-Oh! Wheelie Breakers is a physical card game, so you need physical cards to play.
* No in-game purchases: The game does not have in-game purchases or a way to obtain digital cards.
* Focus on gameplay: The game focuses on the physical gameplay experience rather than digital card collection.
Therefore, there is no place to input card codes in Yu-Gi-Oh! Wheelie Breakers.