The game features a set roster of cards available in the game's story mode and Duel World. There's no option to input codes to unlock extra cards, packs, or content.
If you want to play with a wider selection of cards, you'd need to explore other Yu-Gi-Oh! games that support card code entry, such as:
* Yu-Gi-Oh! Legacy of the Duelist: Link Evolution: This game allows you to input card codes from various sets.
* Yu-Gi-Oh! Duel Links: This mobile game also has a code system for unlocking special cards and rewards.
* Yu-Gi-Oh! Master Duel: This game has a code system for events and rewards.
Remember to check the official websites or forums for the specific game to get the latest codes and instructions.