Mario and Luigi 2: Partners in Time
New Super Mario Bros.
Mario Kart DS
Legend of Zelda: Phantom Hourglass

Yes some of them do go down over time. You might have to shop around to find some of them cheap.

http://www.neogaf.com/forum/showthread.php?t=222049. Pick the 3 that interest you the most. No wait only pick 2. YOu have to get twewy since you are a KH fan and they are made by the same team.

check my sig.
Its way better then EBA!

So you're getting Trauma Center 1+2 and Elite Beat Agents? I suggest getting Phantom Hourglass and The World Ends With You. Those 5 games will hold you off for a long while.

New Super Mario Bros.
The Legend of Zelda: Phantom Hourglass
Final Fantasy IV (Release date is July 22)

New Super Mario Bros.
Mario Kart DS
Pokemon Diamond/Pearl

@ sc94597

Because that thread narrows it down.

@ This Thread

Hmmm... TWEWY seems interesting since the KH team is involved.

But I am not some completely obsessed fan!

...

What's the game about?

Oh damn. I might not get it since I have a $90 budget.

Pheonix Wright games. Almost all are now about 20$ or cheaper except Apollo Justice.

With the 3 games I listed you have ~20 + 15 + unlimited hours of fun

Also, I think thread sc94597 pointed out is great. I actually forgot about it for a second as I typically throw that out there.

The World Ends With You

Square Enix' best game, and quite possibly the best handheld game yet. At least the best on DS.

Have a happy 14th year :)