I’m going to “fourth” the vote for Animal Crossing – superbly simple and sinfully indulgent game into the world of everything cutesy and collectible. Research before you buy to make sure it’s your cup of tea.
Here’s a big recommendation for you: Do you like puzzles and brain teasers??
If so, you have to get Professor Layton and the Curious Village. It is a whodunnit sweet little mystery tale that is slowly unraveled by solving brainteasers. The lead characters are Professor Layton, a whip-smart proper English chap, and his clever sidekick nephew. Together they are hired to solve a murder in a strange little town. Mysterious happenings and puzzles ensue.
It nicely utilizes multiple functions of the DS, is well rendered (beautiful game!), and has a worthwhile plot. You’ll get several hours of play out of it, but it is a finishable game.
Plus, the sequel should be coming out in a matter of months (3 sequels in all, I believe), so you’d have a franchise to look forward to!
Great game for puzzle lovers.