Frankly, I'm surprised this sort of thread didn't already exist -- if in fact it doesn't. I looked, but you never know. Dates are retrieved from VGChartz unless linked elsewhere.

#1: The Legend of Zelda: Ocarina of Time 3D (20 Aug, '11)
#2: Nintendogs + Cats (29 Oct, '11)
#3: Super Mario 3D Land (17 Nov, '11)
#4: Mario Kart 7 (10 Dec, '11)
#5: Monster Hunter 3 Ultimate (07 Jan, '12)
#6: New Super Mario Bros. 2 (18 Aug, '12)
#7: Animal Crossing: New Leaf (24 Nov, '12)
#8: Kingdom Hearts 3D: Dream Drop Distance (08 Dec, '12)
#9: Paper Mario: Sticker Star (29 Dec, '12)
#10: Kid Icarus: Uprising (26 Jan, '13)
#11: Professor Layton and the Miracle Mask (09 Feb, '13)
#12: Pokémon Rumble Blast (09 Feb, '13)
#13: Dragon Quest VII (16 Feb, '13)
#14: Luigi's Mansion 2 (06 Apr, '13)

I'll keep the thread updated as more games join the list. So what games do you think will be next? What future releases do you anticipate (or hope) will reach the 1 million milestone? What games that reached the milestone surprised you in doing so?

Recent Updates:

Monster Hunter 3 Ultimate Passes 2 Million Sales
New Million Seller! Luigi's Mansion 2
Ocarina of Time 3D Passes 3 Million Sales
New Million Seller! Dragon Quest VII 3D
New Million Sellers! Professor Layton and the Miracle Mask, Pokémon Rumble Blast

 

Archive:

New Million Seller! ...sort of! Kid Icarus: Uprising
Super Mario 3D Land Passes 8 Million Sales
3DS Surpasses Dreamcast in Total Software Sales
New Million Seller! Paper Mario: Sticker Star
New Super Mario Bros. 2 Passes 4 Million Sales, 1 Million in Europe
Mario Kart 7 52-Week Update

Professor Layton and the Miracle Mask and Kid Icarus will pretty soon.

And I still think Paper Mario will pass 1 million.

I've a little surprised Nintendogs +Cats hasn't sold more. The numbers are still great, but notably less than the first installment.

Kid Icarus seems close. Ill be one to get it shortly.

This week, Kingdom Hearts 3D joined the growing list of 3DS million-sellers. It's the eighth title to accomplish this overall, and the second third-party title (after Monster Hunter 3 Ultimate, or 3G in Japan).

Most Kingdom Hearts games released globally have achieved at least one million sales, so this is not a particularly impressive feat for the game. Depending on how well its legs carry it, the game should sell at least another 200k in its lifetime but will most likely fall short of 2 million sales, a mark only the two main console games in the series have surpassed. A safe bet for Dream Drop Distance is between 1.4 and 1.7 million lifetime sales, just shy of the ~1.85 million sold by three other portable titles in the series, but not too shabby.

My dark horse: Style Savvy: Trendsetters.

I vote for Kid Icarus.
But wait, you're telling me AC hit 1 million without America?!?!?

COLOR ME IMPRESSED.

the_dengle said: didn't already exist

It does. http://gamrconnect.vgchartz.com/thread.php?id=150566&page=1

I wonder how many it will get lifetime? More or less than the DS?

Wasnt KH3D massively overestimated on VGC in the US?
Luigis Mansion will hit the 1million mark next year.And Fire Emblem maybe too.

I think Pokemon: Rumble Blast will also make it to the million sellers list.