1. Musou Orochi (PS2)
2. Yoshi's Island (NDS)
3. Dragon Ball Z Harukanaru Gokuu Densetsu (NDS)
4. Word Puzzle Mojipittan DS (NDS)
5. Prof. Layton and the Mysterious Village (NDS)
6. Monster Hunter Freedom 2 (PSP)
7. Wii Sports (Wii)
8. Crayon Shin-chan DS (NDS)
9. Wii Play (Wii)
10. New Super Mario Bros (NDS)
Some sales number
Musou Orochi : about 400k
Yoshi's Island : about 80k?(total sales became more than 500k)
Dragon Ball Z : about 60k
Mojipittan DS : about 60k
Prof. Layton : about 50k
Crayon shin-chan DS : about 30k
Wii Play: ? (total sales became more than 1 million)
Rogue Galaxy Directors Cut : about 10k
Flont Mission First (DS) : about 20k(less than 20k)
Armored Core 4 (360) : about 10k
Console
Wii : about 80k
DSL : about 150k
PS3 : about 20k(less than 20k)
PSP : about 40k
source : http://ameblo.jp/sinobi
It is surprized that Prof. Layton sold 1.5 times than former sales
If you need something about Japanese market from the perspective of Japanese, please contact me.








PSP - still on the "MHP2" wave 
Fact: PSP can make better graphics than the DS.
Fact: Doesn't matter as far as sales go!
About the numbers:
That's crazy that they can hold strong like that, those sales are remarkable.