Here's an odd update- we've got not one, but two previously Japan-only games! But as you might expect from Nintendo, there's a catch...
Super Mario Bros. 2 (Japan)-
Also known as Super Mario Bros.: The Lost Levels, this is the proper sequel to Super Mario Bros. It's more of the same, but harder.
Note: This is the original NES version, without the better graphics from Super Mario All Stars.
Note 2: It costs 600 points instead of 500.
Note 3: This game will be removed at the end of September!
Mario's Super Picross-
Also previously unreleased in the West, it's nonogram (a popular type of puzzle somewhat similar to sudoku) with Mario thrown in. One for puzzle fans.
Note: It costs 900 points instead of 800.
Note 2: It's in Japanese.
Released surprisingly soon after it's predecessor (three weeks ago). It's a blatant Zelda rip-off, but what the heck? It's no less fun.
Nintendo officially gets the award for dumbest idea of the year making SMB 2 (Japan) limited time only.