Pokemon Y ranked for the first time this week, pushing out Super Mario 3D Land from the Top 20.
U.S. 3DS All-Time Download-only Sales (through Oct 24, 2013)
Note: Bundled/Ambassador games are not included. Basically just anything you had to click on 'purchase' button to get that at some point in its life cost money.
01./01. [3DS] Pokemon Dream Radar (Nintendo/Pokemon Co.)
02./02. [3DS] Animal Crossing: New Leaf (Nintendo) (~120K as of Aug 15, 2013)
03./03. [3DS] 3D Classics: Kirby's Adventure (Nintendo)
04./04. [3DS] Pushmo (Nintendo)
05./05. [3DS] 3D Classics: Kid Icarus (Nintendo)
06./06. [3DS] Pokedex 3D Pro (Nintendo/Pokemon Co.)
07./07. [3DS] Colors! 3D (Collecting Smiles)
08./08. [3DS] Fire Emblem: Awakening (Nintendo) (~80K as of Apr 18, 2013)
09./09. [3DS] Sakura Samurai: Art of the Sword (Nintendo)
10./10. [3DS] New Super Mario Bros. 2 (Nintendo)
11./11. [3DS] Luigi's Mansion: Dark Moon (Nintendo) (~50K as of Apr 18, 2013)
12./12. [3DS] Gunman Clive (Bertil Horberg)
13./13. [3DS] Bird Mania 3D (Teyon)
14./14. [3DS] 3D Classics: Xevious (Namco Bandai Games)
15./15. [3DS] Mighty Switch Force! (Nintendo)
16./17. [3DS] Pokemon X (Nintendo/Pokemon Co.)
17./16. [3DS] 3D Classics: Excitebike (Nintendo)
18./00. [3DS] Pokemon Y (Nintendo/Pokemon Co.)
19./18. [3DS] Dillon's Rolling Western (Nintendo)
20./19. [3DS] Mario and Donkey Kong: Minis on the Move (Nintendo)