Pokemon games have always been about caring for Pokemon as one's pets, spending time with them, healing them, making them stronger in battle, and making sure they come out on top in tough encounters. Part of this process involves leveling up Pokemon so that they become more powerful thanks to increased stats and new moves to use, something that can be done against other Trainers or in the wild. Some Pokemon can also evolve, becoming even stronger. As such, Pokemon Brilliant Diamond and Shining Pearl are great games to do that because of all the peculiar evolution methods they faithfully portray from the original Generation 4 games.