Go for it!
I recently purchased a used Animal Crossing: New Leaf and was happy with its condition when I received it.
The game itself has several enjoyable "goals" that include expanding and decorating your virtual home, visiting with town citizens, building projects for town enrichment, and donating many of your finds to the museum. Though I haven't played much personally with the online features of this game, it seems like visiting friends' towns and sharing your own would be a rewarding part of building up your town. I think this game will make a great addition to my 3ds collection, providing more relaxed gameplay than many of my other games.
Reviewed by: Wesley Gore from Normal, IL on 6/24/2014