It depends on the circumstances, but... look, it's annoying to have to explain it in detail to someone who knows nothing about Duel Monsters, so I'd rather not have to right now if I don't have to.

[Especially when it comes to how exactly a card game can somehow be used outside of said card game for world saving conflicts, because it still gives him a headache just thinking about the bullshit from his own world to compare with the idea of fighting kaiju here.]