Okay so I decided to switch things up about the rules of shadow games so here they are

1. All duelists who participate in a shadow game will still feel real pain when their monster is destroyed

2. Not every shadow will involve someone's soul being taken, but that will appear more as the story continues

And

3. Depending on the emotion the shadows will fuel that emotion more for you (ex: feeling anger at the time will cause the duelist to be more ruthless and violent than originally)