Platinum remains as one of the most definitive Pokemon experiences. Its only issue, game speed, has gone from game breaking in DP to only noticeable here. Everything else is improved as well, from the new trainer designs and towns really selling the cold northern feel, to its pokedex, which is one of my favorites in terms of variety, to gym puzzles which are much more memorable than what DP had to offer. Add onto that one of the more challenging games in the series, and a killer OST and you have the perfect Pokemon Game.