5.2? What's GameSpot thinking? Pokemon Mystery Dungeon has become one of my favorite Pokemon games!
The game is incredibly addictive; I was hooked at the start. Little clips of text give you hints about how you can play, so it was easy to learn. You don't even have to use the touch screen if you don't want to!
Moves, weather effects, and items have been retained. I don't like that each berry you have takes up space in your toolbox, even if it's the same kind! I also don't like that moves have strange amounts of PP. But this adds to the challenge and forces you to think about which items you should take into a dungeon.
I found the main story fairly easy if I had a good combination of Pokemon, but the later dungeons are much more difficult. Speaking of which, I found the story to be very good, and the ending left me choked up. Why? You have to play through the game to find out!
Graphics could be better for a DS game, but I'm not picky about that. Dungeons available after the main story, new recruitable Pokemon, and secret items add to replay value and keep you playing for months.
Overall, I'd say Mystery Dungeon is a must-buy for Pokemon fans, especially if (like me) they're excited for Pokemon Diamond and Pearl.