This year isn't over. I checked the calendar, and it still said "2010". Right now, we are at the half-way point. This could not be a better time to look at the top twenty selling games of 2010!

Game magazine Famitsu has drawn up a list of the top twenty sellers for the first part of 2010. They are:

20. [NDS] Inazuma Eleven 2 - 186,066 in 2010 / 1,129,681 life to date
19. [PS3] Final Fantasy XIII - 193,179 / 1,891,435
18. [PS3] Resident Evil 5 Gold Edition - 258,961
17. [PSP] Monster Hunter Portable 2nd G PSP the Best Reprint - 294,446 / 330,591
16. [WII] Mario Kart Wii - 329,570 / 2,779,332
15. [WII] Wii Sports Resort - 366,833 / 1,909,639
14. [NDS] The Legend of Zelda: Spirit Tracks - 376,054 / 696,994
13. [NDS] Pokemon HeartGold/SuperiorSilver - 393,862 / 3,776,459
12. [NDS] Pokemon Ranger Path of Light - 475,275
11. [PS3] Hokuto Musou - 544,807
10. [PS3] Yakuza 4 - 552,531
9. [PSP] God Eater - 605,316
8. [WII] Super Mario Galaxy 2 - 613,290
7. [WII] Wii Fit Plus - 695,295 / 1,993,828
6. [PSP] Metal Gear Solid Peace Walker - 727,823
5. [PSP] Kingdom Hearts: Birth by Sleep - 728,286
4. [NDS] Tomodachi Collection - 1,012,437 / 3,324,385
3. [NDS] Dragon Quest Monsters Joker 2 - 1,194,584
2. [NDS] Dragon Quest VI - 1,293,916
1. [WII] New Super Mario Bros. Wii - 1,401,895 / 3,887,045

It seems that Mario, Dragon Quest and Pokemon games are popular in Japan. That's just a feeling I get. Read the rest of the list in the link below.

Famitsu 2010 First-Half Top 100 Chart [NeoGAF]