Here are the Top 10:
1. Monster Hunter X (Capcom/3DS) 2,441,977
2. Yo-Kai Watch Busters (Level-5/3DS) 1,965,202
3. Animal Crossing: Happy Home Designer (Nintendo/3DS) 1,282,880
4. Splatoon (Nintendo/Wii U) 1,064,897
5. Dragon Quest VIII: Journey of the Cursed King (Square Enix/3DS) 864,865
6. Super Mario Maker (Nintendo/Wii U) 674,194
7. Monster Strike (Mixi/3DS) 636,709
8. Yo-Kai Watch 2: Shin'uchi (Level-5/3DS) 625,223
9. Rhythm Heaven: The Best+ (Nintendo/3DS) 607,343
10. Fire Emblem Fates (Nintendo/3DS) 538,669

More Here

8/10 Top selling games were 3DS releases.

and the one that wasnt for the 3ds was for the wii u, nice

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NNID/Tumblr/Twitter: Turtlemma
woomy

But for North America it's a far different story:

2015 Top 10:
Call of Duty: Black Ops III (Activision Blizzard | Xbox One, PS4, 360, PS3, PC)
Madden NFL 16 (Electronic Arts | PS4, Xbox One, 360, PS3)
Fallout 4 (Bethesda Softworks | PS4, Xbox One, PC)
Star Wars: Battlefront (Electronic Arts | Xbox One, PS4, PC)
Grand Theft Auto V (Take-Two | PS4, Xbox One) 360, PS3, PC)
NBA 2K16 (Take-Two | PS4, Xbox One, 360, PS3)
Minecraft (Microsoft | 360, Xbox One, PS3, PS4)
FIFA 16 (Electronic Arts | PS4, Xbox One, 360, PS3)
Mortal Kombat X (Warner Bros | PS4, Xbox One)
Call of Duty: Advanced Warfare (Activision Blizzard | Xbox One, PS4, 360, PS3, PC)

My personal taste is a lot more like the Japanese audience

and this is UKs

im with japan on this one, none of these interest me, out of all of them id play star wars because its star wars

edit: wasnt mario maker just for wii u or have i missed something and its on 3ds in japan too?

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NNID/Tumblr/Twitter: Turtlemma
woomy

Nope, it was a typo! Thanks for pointing it out