Pokemon is a very Long running series,with four main pairs of games and a new one on the way, each has featured improvements and new Pokemon, moves and items, the most recently released of these is the pair of Heartgold and Soulsilver. The games are remakes of the well known and very popular Gold and Silver (Generally considered the best of the series), everything from the originals is preserved (With some minor exceptions like the Berserk Gene that couldn't be ported without cutting compatibility with Diamond and Pearl, and we all know how that ended up last time). Of course, this doesn't mean the developers settled for a straight port with updated graphics, many of the updates from Diamond and Pearl are retained, including the 242 new pokemon added between the 2nd and 4th generations, all the new Items and even the VS. Recorder. Heartgold and Soulsilver have brought new ideas to the table as well, the most significant is likely the fact that your Pokemon now follow you, this adds dramatically to the atmosphere, you can get almost all of the Pokemon (Excluding certain Starters and Legendaries and, randomly, Rotom and the Glameow, Drifloon and Stunky lines) . The game's main quest is a decent length with 16 Badges to collect over the usual 8, the difficulty has been upped a decent amount since Diamond, Pearl and Platinum (Note: These observations were gathered from a playthrough using Chikorita and it's evolved forms, depending on your starter, the difficulty may vary) and has been upped dramatically since Gold and Silver. The soundtrack is well remixed too, and the developers even prepared for the Fan Dumb
by letting you switch to the old soundtrack using a late game Item.
Black and White are on the way and they definately look promising, but in the meanwhile, I recommend that fans of Pokemon, Light-hearted RP Gs
or people with an interest in the series looking for a starting point pick up this game. Its fun, long lasting and after finishing the game and catching em' all, you can spend a lot of time building the perfect team. This is currently the best game in the series, combining the best of Diamond, Pearl and Platinum and Gold, Silver and Crystal, along with an all new flavour of it's own in ways.