A Shiny Pokémon run in Pokémon Brilliant Diamond and Shining Pearl will require players to have lots of patience to complete. As trainers begin to clear through their first adventure in the Sinnoh region, they may want to play through the game again with a few limitations.
These are self-imposed rules to make the game feel more challenging. Pokémon titles have been historically simplistic and easy to beat, but these rules are put in place so players can customize their own gameplay experience.
. Read more on screenrant.com