Here's why:
* They are a game: Yu-Gi-Oh! is a collectible card game (CCG). The cards are designed for gameplay, with each card representing a monster, spell, or trap with specific abilities and effects.
* Fantasy inspiration: The world of Yu-Gi-Oh! is heavily inspired by Egyptian mythology and fantasy. While some cards do depict spirits or mythical creatures, these are fictional elements within the game's universe.
* Spiritual connection (in-game): Within the Yu-Gi-Oh! lore, the cards are used to summon monsters from another dimension called the "Duel Monsters" world. This realm is a fictional concept and doesn't represent a real spiritual plane.
* No religious connection: Yu-Gi-Oh! doesn't promote any specific religious beliefs or practices. The cards are purely for entertainment and competitive play.
While the game may incorporate elements of spirituality and the supernatural, it's important to remember that these are fictional concepts within the context of the game.