For a game only sold at one store, Chibi-Robo is one of the most compelling and memorable games on the DS.
In park patrol, you play as Chibi-Robo, a world famous 4-inch tall piece of machinery that is designed to revive parks into the former green gardens they used to be. You'll have many tools and friends at your disposal, but you must also defend the flowers you bloom from Smoglings, Smogglobs, as well as Genreral Smogglor and Miasmo.
Aside from the primary game, there are many touch sensitive mini-games and side-quests to complete, adding great legs to the game. I was able to play the mains tory for 34 in-game days, so in my mind, it's easily possible to stretch your game out.
Even once your finished with the storyline, the game insists that you continue your green quest to renew the park.
Combine this with a family-friendly sense of humor, simple controls, and gameplay you didn't know could be addictive, I'm left wondering how Chibi didn't get more fan fare when he first landed on the Gamecube.
Admittedly, the game isn't perfect, few are, but in my mind the biggest missed opportunity is not making some of the mini-games multiplayer over Ad-Hoc. Some games like bowling would be so much more fun with another Robo there.
Also, graphically the game is above average, and looks as if the development team wasn't wanting to risk any dips in frame rate, and handicapped themselves doing so.
Otherwise, all in all, this is one of my hidden gems of 2007 and should be a nice departure for gamers looking for something with a lightness to it.