I bought Pokemon Diamond to play on my DS earlier this year. I bought it because I was curious what made it so popular among young gamers and why it's a best seller. As much as the game is easy to grasp, the challenge lies in attempting to collect every single Pokemon (a little less than 500 of them) and beating the many wandering and boss characters' Pokemon. Before I realized it, I had put about 30 hours into the game and still had a lot more things to do and monsters to catch and train...